Final class FH\Option<+T>

Optional values. Use this instead of ?T when you need Option<Option<T>>, Option<?T>, or Option<mixed>.

Static methods

make(?T $x): Option<T>

Return an option from a nullable value.

none(): Option<T>

Return the empty option.

some(T $x): Option<T>

Return an option with the given value. The nullness of the given value is not considered; this function always returns a non-empty option.

Instance methods

nullable(): ?T

Turn an option into a nullable value.

option<TR>(TR $onNone, (function(T): TR) $onSome): TR

optionL<TR>((function(): TR) $onNone, (function(T): TR) $onSome): TR

map<TM>((function(T): TM) $f): Option<TM>

bind<TM>((function(T): Option<TM>) $f): Option<TM>