toDefaulted

Variant of std.conv.to with defaultValue making it nothrow.

T toDefaulted(S value, U defaultValue)
T toDefaulted(const(char)[] value, T defaultValue)
pure nothrow @safe @nogc
T
toDefaulted
(
T
)
(
scope const(char)[] value
,
const T defaultValue
)
if (
is(T == enum)
)

Examples

assert("42_1".toDefaulted!int(43) == 43);
assert(42.toDefaulted!string("_43") == "42");

enum E { unknown, x, y, z, z2 = z, }
assert("x".toDefaulted!(E)(E.init) == E.x);
assert("z".toDefaulted!(E)(E.init) == E.z);
assert("z2".toDefaulted!(E)(E.init) == E.z);
assert("_".toDefaulted!(E)(E.init) == E.unknown);

enum E { unknown, x, }
assert(E.x.toDefaulted!string("init") == "x");
assert(E.init.toDefaulted!string("init") == "unknown");

See Also

https://forum.dlang.org/post/bnbbheofzaxlabvnvrrc@forum.dlang.org http://forum.dlang.org/post/tsszfamjalzviqjhpdcr@forum.dlang.org https://forum.dlang.org/post/kdjbkqbnspzshdqtsntg@forum.dlang.org

Meta

Source

See Implementation

nxt conv_ex functions