[.NET] C# 'is' operator

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[.NET] C# 'is' operator(dotnetbutchering.blogspot.com)

submitted by John_Idol(390) 3 years, 8 months ago

The C# 'is' operator looks like a boring little fella at first, but once you get to know it you will eventually appreciate it - it checks if you can safely cast an instance of an object to a type

2 comments |category: C# |Views: 22
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posted by yesthatmcgurk(4063) 3 years, 8 months ago 0

I'm not a fan of 'is' for a couple reasons.

1) Bill Clinton... no, strike that.

1) Using it always ends up with a warning about casting twice... if(foo is Bar) ((Bar)foo).DoSomethingAsBar() essentially casts twice, and you get the compiler warning (or is it code analysis?).
2) Its too often used as a crutch for bad code. Take, for instance, the above example. Have you ever done that? Have you seen anybody do it? Didn't you feel dirty afterwards?

Better var bar = foo as Bar; if(bar != null) bar.DoSomethingAsBar(); Better yet, don't.

posted by John_Idol(390) 3 years, 8 months ago 0

I agree - using as is way better

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