• Gary Willoughby (7/7) Dec 05 2014 How can i check that a type is a struct at compile time? I know i
• Kapps (19/26) Dec 05 2014 Same thing but with struct: is(T == struct)
• Jonathan M Davis via Digitalmars-d-learn (5/12) Dec 06 2014 static if(is(T == struct))
• shona123 (3/3) Dec 18 2014 But how to do the same thing for a struct?

"Gary Willoughby" <dev nomad.so> writes:

How can i check that a type is a struct at compile time? I know i 
can test for a class like this:

static if(is(T == class))
{
     ...
}

But how to do the same thing for a struct?

"Kapps" <opantm2+spam gmail.com> writes:

On Friday, 5 December 2014 at 20:38:31 UTC, Gary Willoughby wrote:
 How can i check that a type is a struct at compile time? I know 
 i can test for a class like this:

 static if(is(T == class))
 {
     ...
 }

 But how to do the same thing for a struct?

Same thing but with struct: is(T == struct)

Note that this returns false for things like 'int'.

Ex:

struct Foo { }

void foo(T)(T inst) {
	static if(is(T == struct))
		writeln(T.stringof, " is a struct");
	else
		writeln(T.stringof, " is NOT a struct");
}

void main() {
	Foo a;
	foo(a);
	foo(3);
}

--

Foo is a struct
int is NOT a struct

Jonathan M Davis via Digitalmars-d-learn writes:

On Friday, December 05, 2014 20:38:30 Gary Willoughby via Digitalmars-d-learn
wrote:
 How can i check that a type is a struct at compile time? I know i
 can test for a class like this:

 static if(is(T == class))
 {
      ...
 }

 But how to do the same thing for a struct?

static if(is(T == struct))
{
}

- Jonathan M Davis

"shona123" <ganibhai155 gmail.com> writes:

But how to do the same thing for a struct?


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