From 76b49a6af86b4bc96c3c314fe3a324ff80d2ee91 Mon Sep 17 00:00:00 2001 From: borb Date: Thu, 26 Jun 2025 16:01:06 +0300 Subject: [PATCH] fix lecture 12-15 --- 12-files-and-streams-slides.html | 44 ++++++------ 12-files-and-streams.md | 6 +- 13-generics-ienumerable-and-linq-slides.html | 75 +++++++++++--------- 13-generics-ienumerable-and-linq.md | 40 +++++------ 14-exceptions-threads-and-tasks-slides.html | 46 ++++++------ 14-exceptions-threads-and-tasks.md | 6 +- 15-design-patterns-in-csharp-slides.html | 44 ++++++------ 15-design-patterns-in-csharp.md | 3 - 8 files changed, 135 insertions(+), 129 deletions(-) diff --git a/12-files-and-streams-slides.html b/12-files-and-streams-slides.html index cdf2ccf..45e92e0 100644 --- a/12-files-and-streams-slides.html +++ b/12-files-and-streams-slides.html @@ -1,4 +1,4 @@ -12. Files and Streams
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:is(h5,marp-h5)::part(auto-scaling),div#\:\$p>svg>foreignObject>section :is(h6,marp-h6)::part(auto-scaling){max-height:563px}div#\:\$p>svg>foreignObject>section hr{height:0;padding-top:.25em}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre){border:1px solid var(--color-border-default);line-height:1.15;overflow:visible}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre)::part(auto-scaling){max-height:529px}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs){color:var(--color-prettylights-syntax-storage-modifier-import)}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-doctag),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-keyword),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-meta .hljs-keyword),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-template-tag),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-template-variable),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-type),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-variable.language_){color:var(--color-prettylights-syntax-keyword)}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-title),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-title.class_),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-title.class_.inherited__),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-title.function_){color:var(--color-prettylights-syntax-entity)}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-attr),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-attribute),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-literal),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-meta),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-number),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-operator),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-selector-attr),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-selector-class),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-selector-id),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-variable){color:var(--color-prettylights-syntax-constant)}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-meta .hljs-string),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-regexp),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-string){color:var(--color-prettylights-syntax-string)}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-built_in),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-symbol){color:var(--color-prettylights-syntax-variable)}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-code),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-comment),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-formula){color:var(--color-prettylights-syntax-comment)}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-name),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-quote),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-selector-pseudo),div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-selector-tag){color:var(--color-prettylights-syntax-entity-tag)}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-subst){color:var(--color-prettylights-syntax-storage-modifier-import)}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-section){color:var(--color-prettylights-syntax-markup-heading);font-weight:700}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-bullet){color:var(--color-prettylights-syntax-markup-list)}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-emphasis){color:var(--color-prettylights-syntax-markup-italic);font-style:italic}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-strong){color:var(--color-prettylights-syntax-markup-bold);font-weight:700}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-addition){background-color:var(--color-prettylights-syntax-markup-inserted-bg);color:var(--color-prettylights-syntax-markup-inserted-text)}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre) :where(.hljs-deletion){background-color:var(--color-prettylights-syntax-markup-deleted-bg);color:var(--color-prettylights-syntax-markup-deleted-text)}div#\:\$p>svg>foreignObject>section footer,div#\:\$p>svg>foreignObject>section header{color:var(--header-footer-color);font-size:18px;left:30px;margin:0;position:absolute}div#\:\$p>svg>foreignObject>section header{top:21px}div#\:\$p>svg>foreignObject>section footer{bottom:21px}div#\:\$p>svg>foreignObject>section{--h1-color:#246;--header-footer-color:hsla(0,0%,40%,.75);--heading-strong-color:#48c;--paginate-color:#777;align-items:stretch;display:flex;flex-flow:column nowrap;font-size:29px;height:720px;justify-content:center;padding:78.5px;width:1280px}div#\:\$p>svg>foreignObject>section{--marpit-root-font-size:29px}div#\:\$p>svg>foreignObject>section:where(.invert){--h1-color:#cee7ff;--header-footer-color:hsla(0,0%,60%,.75);--heading-strong-color:#7bf;--paginate-color:#999}div#\:\$p>svg>foreignObject>section>:last-child,div#\:\$p>svg>foreignObject>section[data-footer]>:nth-last-child(2){margin-bottom:0}div#\:\$p>svg>foreignObject>section>:first-child,div#\:\$p>svg>foreignObject>section>header:first-child+*{margin-top:0}div#\:\$p>svg>foreignObject>section:after{bottom:21px;color:var(--paginate-color);font-size:24px;padding:0;position:absolute;right:30px}div#\:\$p>svg>foreignObject>section:after{--marpit-root-font-size:24px}div#\:\$p>svg>foreignObject>section[data-color] :is(h1,marp-h1),div#\:\$p>svg>foreignObject>section[data-color] :is(h2,marp-h2),div#\:\$p>svg>foreignObject>section[data-color] :is(h3,marp-h3),div#\:\$p>svg>foreignObject>section[data-color] :is(h4,marp-h4),div#\:\$p>svg>foreignObject>section[data-color] :is(h5,marp-h5),div#\:\$p>svg>foreignObject>section[data-color] :is(h6,marp-h6){color:currentcolor}div#\:\$p>svg>foreignObject>:where(section){container-type:size}div#\:\$p>svg>foreignObject>section img[data-marp-twemoji]{background:transparent;height:1em;margin:0 .05em 0 .1em;vertical-align:-.1em;width:1em} +/* buutti.css */ +/* @theme buutti */div#\:\$p>svg>foreignObject>section .columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:calc(var(--marpit-root-font-size, 1rem) * 1)}div#\:\$p>svg>foreignObject>section .columns12{display:grid;grid-template-columns:1fr 2fr;gap:calc(var(--marpit-root-font-size, 1rem) * 1)}div#\:\$p>svg>foreignObject>section .columns21{display:grid;grid-template-columns:2fr 1fr;gap:calc(var(--marpit-root-font-size, 1rem) * 1)}div#\:\$p>svg>foreignObject>section .columns32{display:grid;grid-template-columns:3fr 2fr;gap:calc(var(--marpit-root-font-size, 1rem) * 1)}div#\:\$p>svg>foreignObject>section .columns23{display:grid;grid-template-columns:2fr 3fr;gap:calc(var(--marpit-root-font-size, 1rem) * 1)}div#\:\$p>svg>foreignObject>section .columns111{display:grid;grid-template-columns:1fr 1fr 1fr;gap:calc(var(--marpit-root-font-size, 1rem) * 1)}div#\:\$p>svg>foreignObject>section .centered{display:flex;flex-direction:column;justify-content:center;text-align:center}div#\:\$p>svg>foreignObject>section .tableborderless td,div#\:\$p>svg>foreignObject>section th{border:none!important;border-collapse:collapse}div#\:\$p>svg>foreignObject>section.extra{background-color:#5d275d;background-image:linear-gradient(to bottom,#401a40,#1d0c1d);color:white}div#\:\$p>svg>foreignObject>section.extra a{color:rgb(145,255,209)}div#\:\$p>svg>foreignObject>section.exercise{background-color:#29366f;background-image:linear-gradient(to bottom,#20636a,#173742);color:white}div#\:\$p>svg>foreignObject>section.exercise a{color:rgb(211,173,255)} + +/* @theme 78cv9t8cnsmnbr0e2qnjmkqpf3yv2m2clyqhqo16q7z */div#\:\$p>svg>foreignObject>section[data-marpit-advanced-background=background]{columns:initial!important;display:block!important;padding:0!important}div#\:\$p>svg>foreignObject>section[data-marpit-advanced-background=background]:after,div#\:\$p>svg>foreignObject>section[data-marpit-advanced-background=background]:before,div#\:\$p>svg>foreignObject>section[data-marpit-advanced-background=content]:after,div#\:\$p>svg>foreignObject>section[data-marpit-advanced-background=content]:before{display:none!important}div#\:\$p>svg>foreignObject>section[data-marpit-advanced-background=background]>div[data-marpit-advanced-background-container]{all:initial;display:flex;flex-direction:row;height:100%;overflow:hidden;width:100%}div#\:\$p>svg>foreignObject>section[data-marpit-advanced-background=background]>div[data-marpit-advanced-background-container][data-marpit-advanced-background-direction=vertical]{flex-direction:column}div#\:\$p>svg>foreignObject>section[data-marpit-advanced-background=background][data-marpit-advanced-background-split]>div[data-marpit-advanced-background-container]{width:var(--marpit-advanced-background-split,50%)}div#\:\$p>svg>foreignObject>section[data-marpit-advanced-background=background][data-marpit-advanced-background-split=right]>div[data-marpit-advanced-background-container]{margin-left:calc(100% - var(--marpit-advanced-background-split, 50%))}div#\:\$p>svg>foreignObject>section[data-marpit-advanced-background=background]>div[data-marpit-advanced-background-container]>figure{all:initial;background-position:center;background-repeat:no-repeat;background-size:cover;flex:auto;margin:0}div#\:\$p>svg>foreignObject>section[data-marpit-advanced-background=background]>div[data-marpit-advanced-background-container]>figure>figcaption{position:absolute;border:0;clip:rect(0,0,0,0);height:1px;margin:-1px;overflow:hidden;padding:0;white-space:nowrap;width:1px}div#\:\$p>svg>foreignObject>section[data-marpit-advanced-background=content],div#\:\$p>svg>foreignObject>section[data-marpit-advanced-background=pseudo]{background:transparent!important}div#\:\$p>svg>foreignObject>section[data-marpit-advanced-background=pseudo],div#\:\$p>svg[data-marpit-svg]>foreignObject[data-marpit-advanced-background=pseudo]{pointer-events:none!important}div#\:\$p>svg>foreignObject>section[data-marpit-advanced-background-split]{width:100%;height:100%}

Files and Streams

-
+

Overview

  • Files and Streams
    • @@ -22,7 +26,7 @@
  • JSON Deserialization
-
+

Files and streams

  • The .NET library contains classes for manipulating files and directories
    • @@ -31,7 +35,7 @@

-
+

Using the File Class

  • To get started, add the following namespace to your project:
    using System.IO;
@@ -47,7 +51,7 @@
-
+

Reading from a file

  • Get the entire document as a string with File.ReadAllText
    • @@ -66,7 +70,7 @@
-
+

Writing to a file

  • Writing to a file is done with File.WriteAllText and File.WriteAllLines methods:
    • @@ -86,7 +90,7 @@ File.WriteAllLines(path, lyrics); // Creates a new file with lyrics
-
+

Exercise 1: A simple parser

    @@ -95,7 +99,7 @@ File.WriteAllLines(path, lyrics); // Creates a new
  1. If the file exists, its contents are replaced with each string written to a separate line. If not, a new file with the contents is created.
-
+

JSON

  • JSON (JavaScript Object Notation) is a way to represent code objects in text form, a "data-interchange format"
    • @@ -109,7 +113,7 @@ File.WriteAllLines(path, lyrics); // Creates a new
  • Language-independent, although the JSON notation resembles the C-family of languages (C#, Java, JavaScript etc.)
-
+

JSON Serialization: set-up

  • .NET projects do not directly support JSON serialization
    • @@ -123,7 +127,7 @@ File.WriteAllLines(path, lyrics); // Creates a new
-
+

JSON Serialization: an example

You can serialize an object (e.g. a list) into a JSON string with the JsonConvert.SerializeObject() method:

@@ -151,7 +155,7 @@ File.WriteAllLines(path, lyrics); // Creates a new
-
+

JSON Deserialization

Deserializing the contents of a JSON file into an object in your program can be done with the JsonConvert.DeserializeObject() method:

string json = File.ReadAllText(
@@ -166,7 +170,7 @@ deserializedProducts = JsonConvert.DeserializeObject<List<Product>>(
 }
-
+

Exercise 2: Serializing Your Classes

    @@ -176,7 +180,7 @@ deserializedProducts = JsonConvert.DeserializeObject<List<Product>>(
  1. Every time a new note is submitted, the allNotes list is serialized into a json file notes.json. Set the path to the current project path (you can get the path by right-clicking the project in solution explorer and selecting Copy Full Path. Remember to change the file name!)
-
+

Extra: FileStream

    @@ -187,7 +191,7 @@ deserializedProducts = JsonConvert.DeserializeObject<List<Product>>(
  • This creates a FileStream object that can be used for accessing parts of the file
-
+

FileStream (continued)

    @@ -209,7 +213,7 @@ FileStream fs = null; fs.Close(); // Close the file
-
+

Extra: The using statement

    @@ -218,18 +222,18 @@ fs.Close(); This means that wrapping the file handling in an using block handles the opening and closing of the stream for you
-
+

The following reads the first 20 characters of a file and prints them to the console

string path = @"C:\Users\Public\TestFolder\TestFile.txt";
-int nOfBytesToPrint = 20;
-byte[] byteArray = new byte[nOfBytesToPrint];
+int numberOfBytesToPrint = 20;
+byte[] byteArray = new byte[numberOfBytesToPrint];
 
 if (!File.Exists(path))
   Console.WriteLine($"The file {path} does not exist.");
 else
   using (FileStream fs = File.OpenRead(path))
   {
-    fs.Read(byteArray, 0, nOfBytesToPrint);
+    fs.Read(byteArray, 0, numberOfBytesToPrint);
   };
 // No need to close the file since it was handled inside of a using block
 
diff --git a/12-files-and-streams.md b/12-files-and-streams.md
index ca24885..8f7abb7 100644
--- a/12-files-and-streams.md
+++ b/12-files-and-streams.md
@@ -217,15 +217,15 @@ The following reads the first 20 characters of a file and prints them to the con
 
 ```csharp
 string path = @"C:\Users\Public\TestFolder\TestFile.txt";
-int nOfBytesToPrint = 20;
-byte[] byteArray = new byte[nOfBytesToPrint];
+int numberOfBytesToPrint = 20;
+byte[] byteArray = new byte[numberOfBytesToPrint];
 
 if (!File.Exists(path))
   Console.WriteLine($"The file {path} does not exist.");
 else
   using (FileStream fs = File.OpenRead(path))
   {
-    fs.Read(byteArray, 0, nOfBytesToPrint);
+    fs.Read(byteArray, 0, numberOfBytesToPrint);
   };
 // No need to close the file since it was handled inside of a using block
 
diff --git a/13-generics-ienumerable-and-linq-slides.html b/13-generics-ienumerable-and-linq-slides.html
index faacf3c..f1213dd 100644
--- a/13-generics-ienumerable-and-linq-slides.html
+++ b/13-generics-ienumerable-and-linq-slides.html
@@ -1,4 +1,4 @@
-N. Generics, IEnumerable and LINQ

+  /* content:""; */display:table}div#\:\$p>svg>foreignObject>section:after{clear:both}div#\:\$p>svg>foreignObject>section>:first-child{margin-top:0!important}div#\:\$p>svg>foreignObject>section>:last-child{margin-bottom:0!important}div#\:\$p>svg>foreignObject>section a:not([href]){color:inherit;text-decoration:none}div#\:\$p>svg>foreignObject>section .absent{color:var(--color-danger-fg)}div#\:\$p>svg>foreignObject>section .anchor{float:left;line-height:1;margin-left:-20px;padding-right:4px}div#\:\$p>svg>foreignObject>section .anchor:focus{outline:none}div#\:\$p>svg>foreignObject>section :is(pre,marp-pre),div#\:\$p>svg>foreignObject>section blockquote,div#\:\$p>svg>foreignObject>section details,div#\:\$p>svg>foreignObject>section dl,div#\:\$p>svg>foreignObject>section ol,div#\:\$p>svg>foreignObject>section p,div#\:\$p>svg>foreignObject>section table,div#\:\$p>svg>foreignObject>section ul{margin-bottom:16px;margin-top:0}div#\:\$p>svg>foreignObject>section blockquote>:first-child{margin-top:0}div#\:\$p>svg>foreignObject>section blockquote>:last-child{margin-bottom:0}div#\:\$p>svg>foreignObject>section :is(h1,marp-h1) .octicon-link,div#\:\$p>svg>foreignObject>section :is(h2,marp-h2) .octicon-link,div#\:\$p>svg>foreignObject>section :is(h3,marp-h3) .octicon-link,div#\:\$p>svg>foreignObject>section :is(h4,marp-h4) .octicon-link,div#\:\$p>svg>foreignObject>section :is(h5,marp-h5) .octicon-link,div#\:\$p>svg>foreignObject>section :is(h6,marp-h6) .octicon-link{color:var(--color-fg-default);vertical-align:middle;visibility:hidden}div#\:\$p>svg>foreignObject>section :is(h1,marp-h1):hover .anchor,div#\:\$p>svg>foreignObject>section :is(h2,marp-h2):hover .anchor,div#\:\$p>svg>foreignObject>section :is(h3,marp-h3):hover .anchor,div#\:\$p>svg>foreignObject>section :is(h4,marp-h4):hover .anchor,div#\:\$p>svg>foreignObject>section :is(h5,marp-h5):hover .anchor,div#\:\$p>svg>foreignObject>section :is(h6,marp-h6):hover .anchor{text-decoration:none}div#\:\$p>svg>foreignObject>section :is(h1,marp-h1):hover .anchor .octicon-link,div#\:\$p>svg>foreignObject>section :is(h2,marp-h2):hover .anchor .octicon-link,div#\:\$p>svg>foreignObject>section :is(h3,marp-h3):hover .anchor .octicon-link,div#\:\$p>svg>foreignObject>section :is(h4,marp-h4):hover .anchor .octicon-link,div#\:\$p>svg>foreignObject>section :is(h5,marp-h5):hover .anchor .octicon-link,div#\:\$p>svg>foreignObject>section :is(h6,marp-h6):hover .anchor .octicon-link{visibility:visible}div#\:\$p>svg>foreignObject>section :is(h1,marp-h1) code,div#\:\$p>svg>foreignObject>section :is(h1,marp-h1) tt,div#\:\$p>svg>foreignObject>section :is(h2,marp-h2) code,div#\:\$p>svg>foreignObject>section :is(h2,marp-h2) tt,div#\:\$p>svg>foreignObject>section :is(h3,marp-h3) code,div#\:\$p>svg>foreignObject>section :is(h3,marp-h3) tt,div#\:\$p>svg>foreignObject>section :is(h4,marp-h4) code,div#\:\$p>svg>foreignObject>section :is(h4,marp-h4) tt,div#\:\$p>svg>foreignObject>section :is(h5,marp-h5) code,div#\:\$p>svg>foreignObject>section :is(h5,marp-h5) tt,div#\:\$p>svg>foreignObject>section :is(h6,marp-h6) code,div#\:\$p>svg>foreignObject>section :is(h6,marp-h6) tt{font-size:inherit;padding:0 .2em}div#\:\$p>svg>foreignObject>section summary :is(h1,marp-h1),div#\:\$p>svg>foreignObject>section summary :is(h2,marp-h2),div#\:\$p>svg>foreignObject>section summary :is(h3,marp-h3),div#\:\$p>svg>foreignObject>section summary :is(h4,marp-h4),div#\:\$p>svg>foreignObject>section summary :is(h5,marp-h5),div#\:\$p>svg>foreignObject>section summary :is(h6,marp-h6){display:inline-block}div#\:\$p>svg>foreignObject>section summary :is(h1,marp-h1) .anchor,div#\:\$p>svg>foreignObject>section summary :is(h2,marp-h2) .anchor,div#\:\$p>svg>foreignObject>section summary :is(h3,marp-h3) .anchor,div#\:\$p>svg>foreignObject>section summary :is(h4,marp-h4) .anchor,div#\:\$p>svg>foreignObject>section summary :is(h5,marp-h5) .anchor,div#\:\$p>svg>foreignObject>section summary :is(h6,marp-h6) .anchor{margin-left:-40px}div#\:\$p>svg>foreignObject>section summary :is(h1,marp-h1),div#\:\$p>svg>foreignObject>section summary :is(h2,marp-h2){border-bottom:0;padding-bottom:0}div#\:\$p>svg>foreignObject>section ol.no-list,div#\:\$p>svg>foreignObject>section ul.no-list{list-style-type:none;padding:0}div#\:\$p>svg>foreignObject>section ol[type="a s"]{list-style-type:lower-alpha}div#\:\$p>svg>foreignObject>section ol[type="A s"]{list-style-type:upper-alpha}div#\:\$p>svg>foreignObject>section ol[type="i s"]{list-style-type:lower-roman}div#\:\$p>svg>foreignObject>section ol[type="I s"]{list-style-type:upper-roman}div#\:\$p>svg>foreignObject>section div>ol:not([type]),div#\:\$p>svg>foreignObject>section ol[type="1"]{list-style-type:decimal}div#\:\$p>svg>foreignObject>section ol ol,div#\:\$p>svg>foreignObject>section ol ul,div#\:\$p>svg>foreignObject>section ul ol,div#\:\$p>svg>foreignObject>section ul ul{margin-bottom:0;margin-top:0}div#\:\$p>svg>foreignObject>section li>p{margin-top:16px}div#\:\$p>svg>foreignObject>section li+li{margin-top:.25em}div#\:\$p>svg>foreignObject>section dl{padding:0}div#\:\$p>svg>foreignObject>section dl dt{font-size:1em;font-style:italic;font-weight:var(--base-text-weight-semibold,600);margin-top:16px;padding:0}div#\:\$p>svg>foreignObject>section dl dd{margin-bottom:16px;padding:0 16px}div#\:\$p>svg>foreignObject>section table th{font-weight:var(--base-text-weight-semibold,600)}div#\:\$p>svg>foreignObject>section table td,div#\:\$p>svg>foreignObject>section table th{border:1px solid var(--color-border-default);padding:6px 13px}div#\:\$p>svg>foreignObject>section table td>:last-child{margin-bottom:0}div#\:\$p>svg>foreignObject>section table tr{background-color:var(--color-canvas-default);border-top:1px solid var(--color-border-muted)}div#\:\$p>svg>foreignObject>section table tr:nth-child(2n){background-color:var(--color-canvas-subtle)}div#\:\$p>svg>foreignObject>section table img{background-color:transparent}div#\:\$p>svg>foreignObject>section img[align=right]{padding-left:20px}div#\:\$p>svg>foreignObject>section img[align=left]{padding-right:20px}div#\:\$p>svg>foreignObject>section .emoji{background-color:transparent;max-width:none;vertical-align:text-top}div#\:\$p>svg>foreignObject>section :is(span,marp-span).frame,div#\:\$p>svg>foreignObject>section :is(span,marp-span).frame>:is(span,marp-span){display:block;overflow:hidden}div#\:\$p>svg>foreignObject>section :is(span,marp-span).frame>:is(span,marp-span){border:1px solid var(--color-border-default);float:left;margin:13px 0 0;padding:7px;width:auto}div#\:\$p>svg>foreignObject>section :is(span,marp-span).frame :is(span,marp-span) img{display:block;float:left}div#\:\$p>svg>foreignObject>section :is(span,marp-span).frame :is(span,marp-span) 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nowrap;font-size:29px;height:720px;justify-content:center;padding:78.5px;width:1280px}div#\:\$p>svg>foreignObject>section{--marpit-root-font-size:29px}div#\:\$p>svg>foreignObject>section:where(.invert){--h1-color:#cee7ff;--header-footer-color:hsla(0,0%,60%,.75);--heading-strong-color:#7bf;--paginate-color:#999}div#\:\$p>svg>foreignObject>section>:last-child,div#\:\$p>svg>foreignObject>section[data-footer]>:nth-last-child(2){margin-bottom:0}div#\:\$p>svg>foreignObject>section>:first-child,div#\:\$p>svg>foreignObject>section>header:first-child+*{margin-top:0}div#\:\$p>svg>foreignObject>section:after{bottom:21px;color:var(--paginate-color);font-size:24px;padding:0;position:absolute;right:30px}div#\:\$p>svg>foreignObject>section:after{--marpit-root-font-size:24px}div#\:\$p>svg>foreignObject>section[data-color] :is(h1,marp-h1),div#\:\$p>svg>foreignObject>section[data-color] :is(h2,marp-h2),div#\:\$p>svg>foreignObject>section[data-color] 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+/* buutti.css */
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+
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Generics, IEnumerable and LINQ

 

-

+

 
Generics

 
    
 
  • When using lists, you have to define the type of data that will be stored in the list, inside the angled brackets:
    List<int> numberList = new List<int>();     // This list stores variables of type int
@@ -23,7 +27,7 @@
 
  • All the variables that are defined generic inside a generic container will be assigned a type only when the containing object/method is called
    • 
 

 

-

+

 
Creating a generic class

 
class GenericClassExample<T>
 {
@@ -46,10 +50,10 @@
 

 

 

-

+

 
Multiple type parameters

-
Generic classes can receive multiple types as parameters:

-
class CustomContainer<T1, T2, T3>
+
    
+
  • Generic classes can receive multiple types as parameters:
    class CustomContainer<T1, T2, T3>
 {
   public T1 First { get; set; }
   public T2 Second { get; set; }
@@ -67,11 +71,12 @@
   }
 }
 
    
+
    • 
+

 

-

+

 
Creating a generic Method

-

-void GenericMethodExample<T>(T value)
+
void GenericMethodExample<T>(T value)
 {
   Console.WriteLine
     ($"This method was passed a variable of type {value.GetType()} and of value {value}.");
@@ -80,10 +85,10 @@ GenericMethodExample<string>(

 

 
    
-
  • Note: You could name the generic type as anything, e.g. <GenericType>. It is named <T> by convention.
    • 
+
  • Note: You could name the generic type as anything, e.g. <GenericType>. It is named <T> here by convention.
    • 
 

 

-

+

 
Exercise 1: Initializing a populated list

 
 
Create a generic method GetPopulatedList<T> which takes two parameters: T value and int length, and returns a new list of type T which is populated with the value variables and has a length of length.

@@ -95,7 +100,7 @@ GenericMethodExample<string>(
 

-

+

 
IEnumerable

 
    
 
  • Lists and arrays are both  collections that implement the  IEnumerable interface
    • 
@@ -111,17 +116,17 @@ IEnumerable<string> days = 
 

 

-

+

 
    
 
  • The IEnumerable interface itself doesn't hold much functionality:
    
 
    • 
 
  • However, the LINQ library includes all the methods you would typically need to apply to IEnumerables, such as filtering
    • 
 

 

-

+

 
LINQ

 

-

+

 
The problem

 
    
 
  • 
@@ -147,7 +152,7 @@ Console.WriteLine(FindObjectWithId(1).Name);
 
    • 
 

 

-

+

 
    
 
  • Having to write your own method for every possible query operation (select, filter, sort…) would be nonsensical
    • 
 
  • The List class includes some methods for manipulation, but...
@@ -159,7 +164,7 @@ Console.WriteLine(FindObjectWithId(1).Name);
 
  • What to do?
    • 
 

 

-

+

 
The solution

 
    
 
  • To introduce extensive query capabilities to all collection types, Language-Integrated Query (LINQ) was created
    • 
@@ -169,7 +174,7 @@ Console.WriteLine(FindObjectWithId(1).Name);
 
 

 

-

+

 
    
 
  • 
 
    Here's a solution to the earlier example that uses LINQ:
    
@@ -189,7 +194,7 @@ Console.WriteLine(userArray.First(user => user.Id == 
    
+
    
 
    Lambda expressions
    
 
      
 
    • Lambda expressions are a quick way of writing one-line methods
      • 
@@ -207,7 +212,7 @@ Console.WriteLine(userList.First(GetUserWithId).Name);    
      
+
      
 
      Lambda expressions compared
      
 
      Using LINQs "First" -query with...
      
 
      
@@ -243,7 +248,7 @@ Console.WriteLine(
 
      
 
 
      
-
      
+
      
 
      Lambda expressions: An example
      
 
      Regular methods can also be declared using the arrow function
      
 
      static void Main(string[] args)
@@ -257,7 +262,7 @@ Console.WriteLine(
 }
 
      
 
      
-
      
+
      
 
      LINQ and Lambda expressions
      
 
        
 
      • Going back to our LINQ example...
        IEnumerable<User> userArray = new User[2]      // Initialize a new array of users
@@ -279,7 +284,7 @@ Console.WriteLine(userArray.First(GetUserWithId).Name);    
        
+
        
 
        LINQ methods
        
 
          
 
        • LINQ contains methods for filtering, ordering, grouping, joining and selecting
          • 
@@ -292,7 +297,7 @@ Console.WriteLine(userArray.First(GetUserWithId).Name);    
          
+
          
 
          LINQ methods listed
          
 
@@ -321,7 +326,7 @@ Console.WriteLine(userArray.First(GetUserWithId).Name);    
          
+
          
 
          
 
          
@@ -354,7 +359,7 @@ Console.WriteLine(userArray.First(GetUserWithId).Name);    
          
+
          
 
          
 
 
          
@@ -388,7 +393,7 @@ Console.WriteLine(userArray.First(GetUserWithId).Name);    here
          
 
-
          
+
          
 
          LINQ: A chained example
          
 
            
 
          • Suppose we have a csv file authors.csv in our project directory.
            // using System.IO;
@@ -411,7 +416,7 @@ Console.WriteLine(userArray.First(GetUserWithId).Name);    authors now contains all the authors from the original csv file!
            • 
 
          
 
          
-
          
+
          
 
          Query syntax
          
 
            
 
          • An alternative way of using LINQ is with the  query syntax
            • 
@@ -424,7 +429,7 @@ Console.WriteLine(userArray.First(GetUserWithId).Name);    The where keyword specifies the condition for the filter
 
          
 
          
-
          
+
          
 
          LINQ queries: An example
          
 
            
 
          • Suppose we have a class City that contains a property Description
            • 
@@ -440,7 +445,7 @@ Console.WriteLine(userArray.First(GetUserWithId).Name);    
            
+
            
 
            Extension methods vs. query syntax
            
 
 
            
-
            
+
            
 
            ToArray() and ToList() methods
            
 
              
 
            • Notice that the LINQ queries return an IEnumerable
              • 
@@ -496,7 +501,7 @@ Console.WriteLine(userArray.First(GetUserWithId).Name);    
              
+
              
 
              Exercise 2: Filtering Names
              
 
 
                
@@ -506,7 +511,7 @@ Console.WriteLine(userArray.First(GetUserWithId).Name);    If there are less than 10 resulting names, print the names as well!
 
              
 
              
-
              
+
              
 
              Exercise 3: Queries on Object Lists
              
 
 
                
@@ -517,7 +522,7 @@ Console.WriteLine(userArray.First(GetUserWithId).Name);    Print the names and id:s of the users in the sorted list
 
              
 
              
-
              
+
              
 
              Going Further: Extension Methods
              
 
 
                
diff --git a/13-generics-ienumerable-and-linq.md b/13-generics-ienumerable-and-linq.md
index 469ff54..ea79eaa 100644
--- a/13-generics-ienumerable-and-linq.md
+++ b/13-generics-ienumerable-and-linq.md
@@ -47,32 +47,30 @@ class Program
 
 ### Multiple type parameters
 
-Generic classes can receive multiple types as parameters:
-
-```csharp
-class CustomContainer
-{
-  public T1 First { get; set; }
-  public T2 Second { get; set; }
-  public T3 Third { get; set; }
-}
-class Program
-{
-  static void Main(string[] args)
+* Generic classes can receive multiple types as parameters:
+  ```csharp
+  class CustomContainer
   {
-    CustomContainer container
-      = new CustomContainer();
-    container.First = 10;
-    container.Second = "Testing.";
-    container.Third = DateTime.Now;
+    public T1 First { get; set; }
+    public T2 Second { get; set; }
+    public T3 Third { get; set; }
   }
-}
-```
+  class Program
+  {
+    static void Main(string[] args)
+    {
+      CustomContainer container
+        = new CustomContainer();
+      container.First = 10;
+      container.Second = "Testing.";
+      container.Third = DateTime.Now;
+    }
+  }
+  ```
 
 ### Creating a generic Method
 
 ```csharp
-
 void GenericMethodExample(T value)
 {
   Console.WriteLine
@@ -83,7 +81,7 @@ GenericMethodExample("ABC");
 
 ![](imgs/13%20Generics%2C%20IEnumerable%20and%20LINQ_2.png)
 
-* ***Note:*** You could name the generic type as anything, e.g. ``. It is named `` by convention.
+* ***Note:*** You could name the generic type as anything, e.g. ``. It is named `` here by convention.
 
 ## Exercise 1: Initializing a populated list
 
diff --git a/14-exceptions-threads-and-tasks-slides.html b/14-exceptions-threads-and-tasks-slides.html
index 3677576..a5bf56b 100644
--- a/14-exceptions-threads-and-tasks-slides.html
+++ b/14-exceptions-threads-and-tasks-slides.html
@@ -1,4 +1,4 @@
-14. Exceptions, Threads and Tasks
                
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g[data-mml-node=merror]>g{fill:red;stroke:red}div#\:\$p>svg>foreignObject>section g[data-mml-node=merror]>rect[data-background]{fill:yellow;stroke:none}div#\:\$p>svg>foreignObject>section g[data-mml-node=mtable]>line[data-line],div#\:\$p>svg>foreignObject>section svg[data-table]>g>line[data-line]{stroke-width:70px;fill:none}div#\:\$p>svg>foreignObject>section g[data-mml-node=mtable]>rect[data-frame],div#\:\$p>svg>foreignObject>section svg[data-table]>g>rect[data-frame]{stroke-width:70px;fill:none}div#\:\$p>svg>foreignObject>section g[data-mml-node=mtable]>.mjx-dashed,div#\:\$p>svg>foreignObject>section svg[data-table]>g>.mjx-dashed{stroke-dasharray:140}div#\:\$p>svg>foreignObject>section g[data-mml-node=mtable]>.mjx-dotted,div#\:\$p>svg>foreignObject>section svg[data-table]>g>.mjx-dotted{stroke-linecap:round;stroke-dasharray:0,140}div#\:\$p>svg>foreignObject>section g[data-mml-node=mtable]>g>svg{overflow:visible}div#\:\$p>svg>foreignObject>section [jax=SVG] 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+/* buutti.css */
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+
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                Exceptions, Threads and Tasks
                
 
                
-
                
+
                
 
                Exceptions
                
 
                  
 
                • Exceptions are problems that occur during the lifetime of the program
                  • 
@@ -24,7 +28,7 @@
 
 
                
 
                
-
                
+
                
 
                Checking for exceptions
                
 
                  
 
                • There should be some kind of system to check for these problems so that even if they do occur, the application does not crash
@@ -50,7 +54,7 @@
 
          
 
 
          
 
 
          
-
          
+
          
 
          Try-catch
          
 
            
 
          • 
@@ -72,7 +76,7 @@
 
            • 
 
          
 
          
-
          
+
          
 
          Throw
          
 
            
 
          • 
@@ -97,7 +101,7 @@
 
            • 
 
          
 
          
-
          
+
          
 
          Finally
          
 
            
 
          • 
@@ -121,7 +125,7 @@
 
            • 
 
          
 
          
-
          
+
          
 
          Exercise 1: Debugging Exceptions
          
 
 
          Create a savings calculator which asks the user for a target amount of money the user is aiming for (in integers), and the users monthly salary. For parsing, use the int.Parse() method instead of int.TryParse().
          
@@ -130,7 +134,7 @@
 
          Try your program with different user inputs. Try to intentionally break your program and find as many exceptions as you can.
          
 
          Handle the exceptions with exception handling, and inform the user of each exception with an appropriate message.
          
 
          
-
          
+
          
 
          Threads
          
 
            
 
          • You might have time consuming functionality in your program, like...
@@ -153,7 +157,7 @@
 
          • In the case of continuous execution, there needs to be some way to read the stream and execute the main program at the same time
            • 
 
          
 
          
-
          
+
          
 
          Threads (continued)
          
 
            
 
          • .NET supports multithreading and classes to add new threads are included in the base class library
            using System.Threading;
@@ -164,7 +168,7 @@
 
          • All threads have access to the resources allocated to your program
            • 
 
          
 
          
-
          
+
          
 
            
 
          • 
 
            Initialize a ThreadStart object with the method to be threaded as the argument:
            
@@ -181,7 +185,7 @@ printIntegerThread.Start();
 
            • 
 
          
 
          
-
          
+
          
 
          Thread example
          
 
          
 
          
@@ -216,7 +220,7 @@ printIntegerThread.Start();
 
          
 
          
 
          
-
          
+
          
 
          Threads (continued)
          
 
            
 
          • 
@@ -236,7 +240,7 @@ printIntegerThread3.Start();
 
            • 
 
          
 
          
-
          
+
          
 
          Exercise 2: Threaded Loading
          
 
 
          Create a method public static void LoadData() which simulates loading resources by printing progress from  to . Increase the progress in a loop with  increments. Use the Thread.Sleep() method to wait  between each increment.
          
@@ -244,7 +248,7 @@ printIntegerThread3.Start();
 
          
 
          Näytä ekstrana, miten tämä tehdään käyttäen luokan metodia eri luokan arvoilla
          
 
          
-
          
+
          
 
          Tasks
          
 
            
 
          • In some cases you want to continue working on some tasks while others are queued to be executed
@@ -256,7 +260,7 @@ printIntegerThread3.Start();
 
          • Threading won't help here; even if there was one cook (thread) for each task, they would all have to wait for the oven to heat up. One cook can just well do all the tasks (cooking) alone.
            • 
 
          
 
          
-
          
+
          
 
          Tasks - Continued
          
 
            
 
          • To create an asynchronous method, assign it with the async keyword. It is good practice to end the method name with Async
            • 
@@ -273,7 +277,7 @@ printIntegerThread3.Start();
 
 
          
 
          
-
          
+
          
 
          Tasks example
          
 
          
 
          
@@ -283,7 +287,7 @@ printIntegerThread3.Start();
   {
     int waitTime = 5000;
     await Task.Delay(waitTime);
-    // Replace this with your time consuming async functionality
+    // Replace above with some time-consuming async function
     return new string(
       $"The task took {waitTime / 1000} seconds to finish."
     );
@@ -293,7 +297,7 @@ printIntegerThread3.Start();
     Console.WriteLine("Starting operation...");
     Task<string> resultTask = GetResultAsync();
     Console.WriteLine("Operation has been started.");
-    Console.WriteLine("In the meantime, tell me something nice: ");
+    Console.WriteLine("In the meantime, say something nice:");
     string somethingNice = Console.ReadLine();
     resultTask.Wait(); // Wait for the task to complete
     Console.WriteLine(resultTask.Result);
@@ -307,10 +311,10 @@ printIntegerThread3.Start();
 
          
 
          
 
          
-
          
+
          
 
          Exercise 3: Asynchronous Loading
          
 
-
          Re-create the exercise 2, but instead of using separate threads for "loading the data", use an asynchronous method LoadDataAsync()
          
+
          Redo exercise 2, but instead of using separate threads for "loading the data", use an asynchronous method LoadDataAsync().