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• C#
• C# 4.0
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• Lambda Expressions

• Closing over the loop variable considered harmful

  I don't know why I haven't blogged about this one before; this is the single most common incorrect bug report we get. That is, someone thinks they have found a bug in the compiler, but in fact the compiler is correct and their code is wrong. That's a Read More... Posted Thursday, November 12, 2009 6:50 AM by Eric Lippert | 123 Comments Filed under: C#, Breaking Changes, Lambda Expressions, Language Design, foreach, closures

• Reserved and Contextual Keywords

  Many programming languages, C# included, treat certain sequences of letters as “special”. Some sequences are so special that they cannot be used as identifiers. Let’s call those the “reserved keywords” and the remaining special sequences we’ll call the Read More... Posted Monday, May 11, 2009 8:07 AM by Eric Lippert | 11 Comments Filed under: C#, Breaking Changes, C# 4.0, Language Design, keywords