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Check if template param is null
Jul 11, 2012
Andrea Fontana
Jul 11, 2012
Jonathan M Davis
Jul 11, 2012
Andrea Fontana
July 11, 2012
Gravatar of Andrea FontanaPosted by Andrea FontanaReply
Andrea Fontana
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Is there a (compile time) way to check if a template param is null?

static if ( is (T:int) ) ....
else static if ( is(T:long) ) ....
// how to check if T == null ?
July 11, 2012
Gravatar of Jonathan M DavisPosted by Jonathan M Davis
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Jonathan M Davis
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On Wednesday, July 11, 2012 09:59:44 Andrea Fontana wrote:
> Is there a (compile time) way to check if a template param is null?
> 
> static if ( is (T:int) ) ....
> else static if ( is(T:long) ) ....
> // how to check if T == null ?

Check if its type is typeof(null):

is(T == typeof(null))

- Jonathan M Davis
July 11, 2012
Gravatar of Andrea FontanaPosted by Andrea Fontana
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Andrea Fontana
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Whoops I tried typeof(T) == null :)



Il giorno mer, 11/07/2012 alle 01.02 -0700, Jonathan M Davis ha scritto:

> On Wednesday, July 11, 2012 09:59:44 Andrea Fontana wrote:
> > Is there a (compile time) way to check if a template param is null?
> > 
> > static if ( is (T:int) ) ....
> > else static if ( is(T:long) ) ....
> > // how to check if T == null ?
> 
> Check if its type is typeof(null):
> 
> is(T == typeof(null))
> 
> - Jonathan M Davis