Function fxCheckWeakMapKey

xs/sources/xsMapSet.c:1410–1419

}

txSlot* fxCheckWeakMapKey(txMachine* the, txBoolean mutable)
{
	if (mxArgc > 0) {
		txSlot* slot = fxCanBeHeldWeakly(the, mxArgv(0));
		if (slot && mutable && (slot->flag & XS_MARK_FLAG))
			mxTypeError("key: read-only");
		return slot;
	}
	return C_NULL;
}

txSlot* fxNewWeakMapInstance(txMachine* the)
{