isAggregateType

Whether the given type is an "aggregate type" - i.e. a struct, class, interface, or union. Enum types whose base type is an aggregate type are also considered aggregate types.

template isAggregateType (

) {

static if(is(T == enum))

enum isAggregateType;

static if(!(is(T == enum)))

enum isAggregateType;

}

Examples

struct S {}
class C {}
interface I {}
union U {}

static assert( isAggregateType!S);
static assert( isAggregateType!C);
static assert( isAggregateType!I);
static assert( isAggregateType!U);
static assert( isAggregateType!(const S));
static assert( isAggregateType!(shared C));

static assert(!isAggregateType!int);
static assert(!isAggregateType!string);
static assert(!isAggregateType!(S*));
static assert(!isAggregateType!(C[]));
static assert(!isAggregateType!(I[string]));

enum ES : S { a = S.init }
enum EC : C { a = C.init }
enum EI : I { a = I.init }
enum EU : U { a = U.init }

static assert( isAggregateType!ES);
static assert( isAggregateType!EC);
static assert( isAggregateType!EI);
static assert( isAggregateType!EU);
static assert( isAggregateType!(const ES));
static assert( isAggregateType!(const EC));

isAggregateType

Examples

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