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Advent Calendar 2020 / Programming language

C# Advent Calendar 2020

Participant22People

Subscriber246People

518

Category：Programming language

Creator：

@RyotaMurohoshi

プログラミング言語C#のアドベントカレンダーです。
その2はこちら

C# 9や.NET 5の正式リリースも目前（2020年11月現在）

新しいC#の好きな機能
これから先のC#にまつわるあれこれ
C#や周辺のおもしろいあれこれ
自分がC#で作ったもの
すごいことでもないし、新しいことでもないけれど、みんなに知らせたいこと

C#に関係あるみんなに伝えたいことを、気軽に書いてください！

過去のアドベントカレンダー。

Sun	Mon	Tue	Wed	Thu	Fri	Sat
29	30	@RyotaMurohoshi C# 9.0で加わったC# Source Generatorと、それで作ったValueObjectGeneratorの紹介 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@okazuki C# 1.0 と C# 9.0 で同じプログラムを書いてみよう Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@masanori_msl 【C#】 SQLite-net (sqlite-net-pcl) を試す Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@hiro_matsuno2 PHPer&HTML5が好きな自分がなぜC#に惚れたのか Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	Join calendar on 5 day You can also reserve a slot without registering a title or URL. Title URL Articles to be submitted are welcome on any website as well as on Qiita. If you link a limited shared article by the day before, it will be automatically published around 7:00am on the same day. When you participate, we will assume that you have agreed to the terms of use
@fujieda C#でNaN Boxing Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@nogic1008 タイムトラベル C# Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@KoKeCross .Net 5 時代のテストフレームワーク比較 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@advanceboy .NET Interactive で C# と PowerShell を股に掛ける Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@mizutakawater 新卒エンジニアがC#を半年書いて感じたこと Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@yaju 【.NET】32bitアプリ(x86)からOffice 64bitのアプリケーションの操作は出来るのか Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@skitoy4321 ActivitySourceについての概要 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
@OKsaiyowa 【C#】C#でつまづいたところを「なるほどなっとくC#入門」読みながら再入門 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@imasaaki C#, System.Timers.Timerクラスの安全な破棄方法 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@huideyeren One .NET時代のC# Web開発における技術選択を考える Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@YuMo_tea 【C#】シャローコピーとディープコピー Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@TomoProg テスタブルなコードを書くためのインターフェース入門 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@kawa0x0A C#とMobile Blazor BindingsでWindowsとMac用の動画ビューワーを作成したお話 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@neuecc ソースジェネレーター Part2 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
@skitoy4321 dotnet-traceがどのようにして起動時からの監視を可能にしているか Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@yutorisan 【C#】なぜReactiveExtensionsを導入すると幸せになれるのか Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@Atria BlazorでTypeScriptを利用する Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@TechNinja なにか書きます！ Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@ikorin24 3種類の定数と JIT コンパイル時最適化 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@RyotaMurohoshi .NET 5におけるOrderBy(keySelector).First(predicate)の計算量が増える破壊的変更と、それから考える.NET 5の立ち位置 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	26

	@RyotaMurohoshi C# 9.0で加わったC# Source Generatorと、それで作ったValueObjectGeneratorの紹介 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@okazuki C# 1.0 と C# 9.0 で同じプログラムを書いてみよう Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@masanori_msl 【C#】 SQLite-net (sqlite-net-pcl) を試す Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@hiro_matsuno2 PHPer&HTML5が好きな自分がなぜC#に惚れたのか Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	Join calendar on 5 day You can also reserve a slot without registering a title or URL. Title URL Articles to be submitted are welcome on any website as well as on Qiita. If you link a limited shared article by the day before, it will be automatically published around 7:00am on the same day. When you participate, we will assume that you have agreed to the terms of use
	@fujieda C#でNaN Boxing Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@nogic1008 タイムトラベル C# Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@KoKeCross .Net 5 時代のテストフレームワーク比較 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@advanceboy .NET Interactive で C# と PowerShell を股に掛ける Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@mizutakawater 新卒エンジニアがC#を半年書いて感じたこと Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@yaju 【.NET】32bitアプリ(x86)からOffice 64bitのアプリケーションの操作は出来るのか Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@skitoy4321 ActivitySourceについての概要 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@OKsaiyowa 【C#】C#でつまづいたところを「なるほどなっとくC#入門」読みながら再入門 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@imasaaki C#, System.Timers.Timerクラスの安全な破棄方法 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@huideyeren One .NET時代のC# Web開発における技術選択を考える Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@YuMo_tea 【C#】シャローコピーとディープコピー Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@TomoProg テスタブルなコードを書くためのインターフェース入門 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@kawa0x0A C#とMobile Blazor BindingsでWindowsとMac用の動画ビューワーを作成したお話 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@neuecc ソースジェネレーター Part2 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@skitoy4321 dotnet-traceがどのようにして起動時からの監視を可能にしているか Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@yutorisan 【C#】なぜReactiveExtensionsを導入すると幸せになれるのか Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@Atria BlazorでTypeScriptを利用する Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@TechNinja なにか書きます！ Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@ikorin24 3種類の定数と JIT コンパイル時最適化 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@RyotaMurohoshi .NET 5におけるOrderBy(keySelector).First(predicate)の計算量が増える破壊的変更と、それから考える.NET 5の立ち位置 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use

Sun	Mon	Tue	Wed	Thu	Fri	Sat
29	30	@RyotaMurohoshi C# 9.0で加わったC# Source Generatorと、それで作ったValueObjectGeneratorの紹介 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@okazuki C# 1.0 と C# 9.0 で同じプログラムを書いてみよう Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@masanori_msl 【C#】 SQLite-net (sqlite-net-pcl) を試す Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@hiro_matsuno2 PHPer&HTML5が好きな自分がなぜC#に惚れたのか Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	Join calendar on 5 day You can also reserve a slot without registering a title or URL. Title URL Articles to be submitted are welcome on any website as well as on Qiita. If you link a limited shared article by the day before, it will be automatically published around 7:00am on the same day. When you participate, we will assume that you have agreed to the terms of use
@fujieda C#でNaN Boxing Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@nogic1008 タイムトラベル C# Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@KoKeCross .Net 5 時代のテストフレームワーク比較 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@advanceboy .NET Interactive で C# と PowerShell を股に掛ける Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@mizutakawater 新卒エンジニアがC#を半年書いて感じたこと Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@yaju 【.NET】32bitアプリ(x86)からOffice 64bitのアプリケーションの操作は出来るのか Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@skitoy4321 ActivitySourceについての概要 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
@OKsaiyowa 【C#】C#でつまづいたところを「なるほどなっとくC#入門」読みながら再入門 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@imasaaki C#, System.Timers.Timerクラスの安全な破棄方法 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@huideyeren One .NET時代のC# Web開発における技術選択を考える Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@YuMo_tea 【C#】シャローコピーとディープコピー Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@TomoProg テスタブルなコードを書くためのインターフェース入門 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@kawa0x0A C#とMobile Blazor BindingsでWindowsとMac用の動画ビューワーを作成したお話 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@neuecc ソースジェネレーター Part2 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
@skitoy4321 dotnet-traceがどのようにして起動時からの監視を可能にしているか Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@yutorisan 【C#】なぜReactiveExtensionsを導入すると幸せになれるのか Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@Atria BlazorでTypeScriptを利用する Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@TechNinja なにか書きます！ Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@ikorin24 3種類の定数と JIT コンパイル時最適化 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	@RyotaMurohoshi .NET 5におけるOrderBy(keySelector).First(predicate)の計算量が増える破壊的変更と、それから考える.NET 5の立ち位置 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use	26

	@RyotaMurohoshi C# 9.0で加わったC# Source Generatorと、それで作ったValueObjectGeneratorの紹介 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@okazuki C# 1.0 と C# 9.0 で同じプログラムを書いてみよう Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@masanori_msl 【C#】 SQLite-net (sqlite-net-pcl) を試す Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@hiro_matsuno2 PHPer&HTML5が好きな自分がなぜC#に惚れたのか Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	Join calendar on 5 day You can also reserve a slot without registering a title or URL. Title URL Articles to be submitted are welcome on any website as well as on Qiita. If you link a limited shared article by the day before, it will be automatically published around 7:00am on the same day. When you participate, we will assume that you have agreed to the terms of use
	@fujieda C#でNaN Boxing Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@nogic1008 タイムトラベル C# Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@KoKeCross .Net 5 時代のテストフレームワーク比較 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@advanceboy .NET Interactive で C# と PowerShell を股に掛ける Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@mizutakawater 新卒エンジニアがC#を半年書いて感じたこと Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@yaju 【.NET】32bitアプリ(x86)からOffice 64bitのアプリケーションの操作は出来るのか Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@skitoy4321 ActivitySourceについての概要 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@OKsaiyowa 【C#】C#でつまづいたところを「なるほどなっとくC#入門」読みながら再入門 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@imasaaki C#, System.Timers.Timerクラスの安全な破棄方法 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@huideyeren One .NET時代のC# Web開発における技術選択を考える Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@YuMo_tea 【C#】シャローコピーとディープコピー Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@TomoProg テスタブルなコードを書くためのインターフェース入門 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@kawa0x0A C#とMobile Blazor BindingsでWindowsとMac用の動画ビューワーを作成したお話 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@neuecc ソースジェネレーター Part2 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@skitoy4321 dotnet-traceがどのようにして起動時からの監視を可能にしているか Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@yutorisan 【C#】なぜReactiveExtensionsを導入すると幸せになれるのか Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@Atria BlazorでTypeScriptを利用する Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@TechNinja なにか書きます！ Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@ikorin24 3種類の定数と JIT コンパイル時最適化 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use
	@RyotaMurohoshi .NET 5におけるOrderBy(keySelector).First(predicate)の計算量が増える破壊的変更と、それから考える.NET 5の立ち位置 Overwrite Title URL You can post either your article on Qiita or your blog post. When you participate, we will assume that you have agreed to the terms of use

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