• Andrea Fontana (4/4) Jul 11 2012 Is there a (compile time) way to check if a template param is null?
• Jonathan M Davis (4/9) Jul 11 2012 Check if its type is typeof(null):
• Andrea Fontana (2/14) Jul 11 2012

Andrea Fontana <nospam example.com> writes:

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 =3D=3D null ?

Jonathan M Davis <jmdavisProg gmx.com> writes:

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

Andrea Fontana <nospam example.com> writes:

Whoops I tried typeof(T) =3D=3D 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?
=20
 static if ( is (T:int) ) ....
 else static if ( is(T:long) ) ....
 // how to check if T =3D=3D null ?

=20
 Check if its type is typeof(null):
=20
 is(T =3D=3D typeof(null))
=20
 - Jonathan M Davis