Option

Undocumented in source.

struct Option (

T

) {

alias OptionValueType = T;

this(inout(T) t);

this(inout(U) u);

this(inout(T) u);

this(inout(U) u);

static if(isNullableType!T)

bool isDefined [@property getter];

static if(!(isNullableType!T))

bool isDefined [@property getter];

bool isEmpty [@property getter];

inout(T) get [@property getter];

const(T) getOrElse(const(U) other);

T getOrElse(U other);

const(Option!T) orElse(const(Option!U) other);

Option!T orElse(Option!U other);

inout(T)[] array();

static Option!T fromRange(R r);

string toString();

auto opDispatch(Args args);

bool opEquals(const(Option!U) rhs);

int opApply(int delegate(ref const(T)) operation);

}

Constructors

this this(inout(T) t): Undocumented in source.
this this(inout(U) u): Undocumented in source.
this this(inout(T) u): Undocumented in source.
this this(inout(U) u): Undocumented in source.

Members

Aliases

OptionValueType alias OptionValueType = T: Undocumented in source.

Functions

array inout(T)[] array(): Undocumented in source. Be warned that the author may not have intended to support it.
getOrElse const(T) getOrElse(const(U) other): Undocumented in source. Be warned that the author may not have intended to support it.
getOrElse T getOrElse(U other): Undocumented in source. Be warned that the author may not have intended to support it.
opApply int opApply(int delegate(ref const(T)) operation): Undocumented in source. Be warned that the author may not have intended to support it.
opDispatch auto opDispatch(Args args): Undocumented in source. Be warned that the author may not have intended to support it.
opEquals bool opEquals(const(Option!U) rhs): Undocumented in source. Be warned that the author may not have intended to support it.
orElse const(Option!T) orElse(const(Option!U) other): Undocumented in source. Be warned that the author may not have intended to support it.
orElse Option!T orElse(Option!U other): Undocumented in source. Be warned that the author may not have intended to support it.
toString string toString(): Undocumented in source. Be warned that the author may not have intended to support it.

Properties

get inout(T) get [@property getter]: Undocumented in source. Be warned that the author may not have intended to support it.
isDefined bool isDefined [@property getter]: Undocumented in source. Be warned that the author may not have intended to support it.
isDefined bool isDefined [@property getter]: Undocumented in source. Be warned that the author may not have intended to support it.
isEmpty bool isEmpty [@property getter]: Undocumented in source. Be warned that the author may not have intended to support it.

Static functions

fromRange Option!T fromRange(R r): Undocumented in source. Be warned that the author may not have intended to support it.

Meta

Source

See Implementation

option functions

structs

Option

templates

isOptionType