import checkedint.noex : idx, SmartInt, safeInt; // use IntFlagPolicy.noex assert(is(typeof(idx(cast(long)1)) == ptrdiff_t)); assert(is(typeof(idx(cast(ubyte)1)) == size_t)); assert(is(typeof(idx(SmartInt!ulong(1))) == size_t)); assert(idx(17uL) == 17); assert(idx(-3) == -3); assert(idx(safeInt(cast(byte)100)) == 100); static if (size_t.sizeof == 4) { idx(ulong.max); assert(IntFlags.local.clear() == IntFlag.posOver); idx(long.min); assert(IntFlags.local.clear() == IntFlag.negOver); }
Cast num to a basic type suitable for indexing an array.
For signed types, ptrdiff_t is returned. For unsigned types, size_t is returned.