$(D_KEYWORD true) if T is a built-in type, $(D_KEYWORD false) otherwise.
static assert(isBuiltinType!int); static assert(isBuiltinType!(int[])); static assert(isBuiltinType!(int[int])); static assert(!isBuiltinType!(int*));
$(D_PSYMBOL isBasicType!T), $(D_PSYMBOL isArray), $(D_PSYMBOL isAssociativeArray).
Determines whether T is a built-in type.
Built-in types are all basic types and arrays.