Q: String (Capital S) vs string (small s)?

[Martin Arvidsson]

Hi

What is the difference by using String myString or string myString when
declaring a string ?

Regards
Martin

 

[Marina Levit [MVP]]

None.

'string' is an alias for the 'String' class. Just as 'int' is an alias for
the Int32 structure, and so on.

 

[gbgeek]

Is there a benefit to using one over the other? I've sometimes found
myself wondering if I should declare all my int's as Int32's.

 

[Marina Levit [MVP]]

No, I am fairly certain the compiler knows to translate one to the other.

 

[John J. Hughes II]

int is mapped to System.Int32 so other then typing more you won't accomplish
much

Regards,
John

 

[Jon Skeet [C# MVP]]

Is there a benefit to using one over the other? I've sometimes found
myself wondering if I should declare all my int's as Int32's.

I use the keyword names in my code for the sake of keyword higlighting
- but for library methods, you should use the type name (eg
Convert.ToInt32) so that it's not tailored to one particular .NET
language.

 

[gbgeek]

That's sound advice. Is that the reason these aliases exist in C#? To
provide a way to refer to objects in a non-language specific way?

 

[Dave Sexton]

Hi Jon,

I do the same for keyword highlighting, but I'm not clear on why I shouldn't
in library methods. Once compiled to CIL, I don't see how it would matter.

Are you suggesting that I use Convert.ToInt32 instead of casting to (int),
even in cases where I know that an explicit cast exists?

 

[Jon Skeet [C# MVP]]

I do the same for keyword highlighting, but I'm not clear on why I shouldn't
in library methods. Once compiled to CIL, I don't see how it would matter.

Are you suggesting that I use Convert.ToInt32 instead of casting to (int),
even in cases where I know that an explicit cast exists?

No, I'm suggesting that you write methods with names of ToInt32 and
ToSingle rather than ToInt and ToFloat. I wasn't talking about
implementation, just naming - sorry to confuse

 

[Dave Sexton]

Hi Jon,

Ok, that makes more sense!

 

[Kevin Frey]

Is this alias something internal to the compiler, or declared somewhere in
code?

In other words, could I use this aliasing feature for my own types?

Kevin

 

[Jon Skeet [C# MVP]]

Is this alias something internal to the compiler, or declared somewhere in
code?

In other words, could I use this aliasing feature for my own types?

You can alias types with the "using" directive at the start of a file,
but you can't add your own "global" aliases.