Optional

Optional T.

@safe

struct Optional (

T

) {

import core.internal.traits : Unqual;;

void opAssign(T value);

void opAssign(None );

static if(isNullable!T)

bool isPresent();

static if(!(isNullable!T))

bool isPresent();

T or(T alternativeValue);

bool empty();

bool opCast();

inout(T) opUnary();

size_t length();

void popFront();

}

Constructors

this this(T value): Undocumented in source.
this this(None ): Undocumented in source.

Members

Functions

empty bool empty(): Undocumented in source.
front T front(): Undocumented in source. Be warned that the author may not have intended to support it.
get T get(): Undocumented in source. Be warned that the author may not have intended to support it.
isPresent bool isPresent(): Undocumented in source. Be warned that the author may not have intended to support it.
isPresent bool isPresent(): Undocumented in source. Be warned that the author may not have intended to support it.
length size_t length(): Undocumented in source.
opAssign void opAssign(T value): Undocumented in source. Be warned that the author may not have intended to support it.
opAssign void opAssign(None ): Undocumented in source. Be warned that the author may not have intended to support it.
opCast bool opCast(): Undocumented in source.
opUnary inout(T) opUnary(): Undocumented in source. Be warned that the author may not have intended to support it.
or T or(T alternativeValue): Undocumented in source. Be warned that the author may not have intended to support it.
popFront void popFront(): Undocumented in source. Be warned that the author may not have intended to support it.

Meta

Source

See Implementation

nxt optional functions

structs

Optional