[C#] The ?? operator??

[MyndFyre]

This one got by me!

Apparently in C# 2.0 with the introduction of nullable types (Nullable<T>), C# grew an operator:

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int? x = null;
int? y = x ?? 0;

?? is a binary operator that returns the left value if it is not null, otherwise the right value.

Wacky!

[Joe[x86]]

I can only thing of a single use for this:

String errorMessage404 = localizedString("error404", "es") ?? "Error 404: File not found."

I'm sure there must be some other uses, but none seem obvious.

[MyndFyre]

x86] link=topic=16128.msg162518#msg162518 date=1165969018]
I can only thing of a single use for this:

String errorMessage404 = localizedString("error404", "es") ?? "Error 404: File not found."

I'm sure there must be some other uses, but none seem obvious.

......

[Hero]

x86] link=topic=16128.msg162518#msg162518 date=1165969018]
I can only thing of a single use for this:

String errorMessage404 = localizedString("error404", "es") ?? "Error 404: File not found."

I'm sure there must be some other uses, but none seem obvious.

......

Exactly what I was thinking....

[Joe[x86]]

So, what did I miss?

[MyndFyre]

x86] link=topic=16128.msg162554#msg162554 date=1166026656]
So, what did I miss?

Indeed, heRo, what did he miss?

[Hero]

x86] link=topic=16128.msg162554#msg162554 date=1166026656]
So, what did I miss?

Indeed, heRo, what did he miss?

I never said he missed anything...

[Warrior]

I love you Myndfyre.

[Explicit]

I love you Myndfyre.

Me, too.

[shout]

I love myself.

[Imperceptus]

just to save you from having to type an extra colon and a null in your code? seems slightly redundant from just ?

[MyndFyre]

just to save you from having to type an extra colon and a null in your code? seems slightly redundant from just ?

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string val = x ?? "null x";
string val = x == null ? "null x" : x;


I think the first is much clearer in intent.