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    <p>Byte size for types is not too interesting when you only have to deal with a single language (and for code which you don't have to remind yourself about math overflows). The part that becomes interesting is when you bridge between one language to another, C# to COM object, etc., or you're doing some bit-shifting or masking and you need to remind yourself (and your code-review co-wokers) of the size of the data.</p> <p>In practice, I usually use Int32 just to remind myself what size they are because I do write managed C++ (to bridge to C# for example) as well as unmanaged/native C++.</p> <p>Long as you probably know, in C# is 64-bits, but in native C++, it ends up as 32-bits, or char is unicode/16-bits while in C++ it is 8-bits. But how do we know this? The answer is, because we've looked it up in the manual and it said so.</p> <p>With time and experiences, you will start to be more type-conscientious when you do write codes to bridge between C# and other languages (some readers here are thinking "why would you?"), but IMHO I believe it is a better practice because I cannot remember what I've coded last week (or I don't have to specify in my API document that "this parameter is 32-bits integer").</p> <p>In <a href="http://en.wikipedia.org/wiki/F_Sharp_%28programming_language%29" rel="nofollow noreferrer">F#</a> (although I've never used it), they define <em>int</em>, <em>int32</em>, and <em>nativeint</em>. The same question should rise, "which one do I use?". As others has mentioned, in most cases, it should not matter (should be transparent). But I for one would choose int32 and uint32 just to remove the ambiguities.</p> <p>I guess it would just depend on what applications you are coding, who's using it, what coding practices you and your team follows, etc. to justify when to use Int32.</p>
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    1. POShould I use int or Int32
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    1. USPeter Mortensen
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    1. CODoesn't that invalidate the purpose of .net? What is F# anyways, an idea Gates had that went away with his retirement...
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      1. USNick Turner
 

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