What code have you written with #pragma you found useful?

Posted by Xavier Ho on Stack Overflow See other posts from Stack Overflow or by Xavier Ho
Published on 2010-04-24T06:52:11Z Indexed on 2010/04/24 7:13 UTC
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c++

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pragma

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compiler

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msvc

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visual-c++

I've never understood the need of #pragma once when #ifndef #define #endif always works.

I've seen the usage of #pragma comment to link with other files , but setting up the compiler settings was easier with an IDE.

What are some other usages of #pragma that is useful, but not widely known?

Edit:

I'm not just after a list of #pragma directives. Perhaps I should rephrase this question a bit more:

What code have you written with #pragma you found useful?

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