$(D_KEYWORD true) if T defines a symbol member, $(D_KEYWORD false) otherwise.
static struct S { int member1; void member2() { } static int member3; static void member4() { } } static assert(hasMember!(S, "member1")); static assert(hasMember!(S, "member2")); static assert(hasMember!(S, "member3")); static assert(hasMember!(S, "member4")); static assert(!hasMember!(S, "member6"));
Determines whether T defines a symbol member.