Option

Undocumented in source.

struct Option (

T

) {

alias WrappedType = T;

alias WrapperType = VariantN!(T.sizeof, T);

WrapperType value;

bool isSome();

bool isNone();

void clear();

bool opCast();

inout(WrappedType) unwrap(string msg);

void opAssign(U u);

}

Constructors

this this(U u): Undocumented in source.

Members

Aliases

WrappedType alias WrappedType = T: Undocumented in source.
WrapperType alias WrapperType = VariantN!(T.sizeof, T): Undocumented in source.

Functions

clear void clear(): Clear the option so it no longer has a value.
isNone bool isNone(): Whether this option does not have some value.
isSome bool isSome(): Whether this option has some value.
opAssign void opAssign(U u): Undocumented in source. Be warned that the author may not have intended to support it.
opCast bool opCast(): Implicit conversion to bool. Equivalent to isSome().
unwrap inout(WrappedType) unwrap(string msg): Return the wrapped value. Throws an exception if there is no value.

Variables

value WrapperType value;: The underlying value wrapped in a std.VariantN.

Meta

Source

See Implementation

mage util option functions

toString

structs

Option