hasUDA

Determines whether symbol has user-defined attribute attr attached to it.

template hasUDA (

alias symbol

alias attr

) {

}

Members

$(D_KEYWORD true) if symbol has user-defined attribute attr, $(D_KEYWORD false) otherwise.

static struct Attr1
{
}
static struct Attr2
{
}
@Attr1 int a;
static assert(hasUDA!(a, Attr1));
static assert(!hasUDA!(a, Attr2));