• Fractal <happycoding server.com> May 21 2009
• Fractal <happycoding server.com> May 21 2009
• Jarrett Billingsley <jarrett.billingsley gmail.com> May 22 2009
• Christopher Wright <dhasenan gmail.com> May 21 2009

Fractal <happycoding server.com> writes:

Hello

Any body can explan me how to determine if a template argument is an array?

Thanks

Fractal <happycoding server.com> writes:

Fractal Wrote:

 Hello
 
 Any body can explan me how to determine if a template argument is an array?


...And also if is an associative array

 Thanks

Jarrett Billingsley <jarrett.billingsley gmail.com> writes:

On Thu, May 21, 2009 at 8:00 PM, Fractal <happycoding server.com> wrote:
 Fractal Wrote:

 Hello

 Any body can explan me how to determine if a template argument is an array?


 ...And also if is an associative array

 Thanks




You can also use template specialization, which, depending on your use
case, might be shorter and clearer than a static if.

template Foo(T: T[]) will specialize for dynamic array arguments.  T
will be the element type (so for int[], T will be int).
template Foo(T: T[n], size_t n) will specialize for static array
arguments. T will be the element type like above, and n will be the
size of the array.
template Foo(T: T[K], K) will specialize for associative array
arguments.  T will be the value type, and K will be the key type.

Christopher Wright <dhasenan gmail.com> writes:

Fractal wrote:
 Hello
 
 Any body can explan me how to determine if a template argument is an array?
 
 Thanks


Have a look at std.traits or tango.core.Traits. The appropriate way to 
check is via the templates they define, since it's clearer. Looking at 
the source will tell you how to replicate the effect should you need to.