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public
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isSome(): bool
Returns true if the option is a Some value.
Returns true if the option is a Some value.
Implements
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#
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public
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isSomeAnd(Closure $predicate): bool
Returns true if the option is a Some and the value inside of it matches a predicate.
Returns true if the option is a Some and the value inside of it matches a predicate.
Implements
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#
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public
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isNone(): bool
Returns true if the option is a None value.
Returns true if the option is a None value.
Implements
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#
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public
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unwrap(): never
Returns the contained Some value, consuming the self value. Because this method may throw, its use is generally discouraged.
Instead, prefer to call Option::unwrapOr() or Option::unwrapOrElse().
Returns the contained Some value, consuming the self value. Because this method may throw, its use is generally discouraged.
Instead, prefer to call Option::unwrapOr() or Option::unwrapOrElse().
Implements
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#
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public
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unwrapOr<S>(S $default): S
Returns the contained Some value or a provided default. Arguments passed to Option::unwrapOr() are eagerly evaluated; if you are
passing the result of a function call, it is recommended to use Option::unwrapOrElse(),
which is lazily evaluated.
Returns the contained Some value or a provided default. Arguments passed to Option::unwrapOr() are eagerly evaluated; if you are
passing the result of a function call, it is recommended to use Option::unwrapOrElse(),
which is lazily evaluated.
Implements
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#
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public
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unwrapOrElse(Closure $default): mixed
Returns the contained Some value or computes it from a closure.
Returns the contained Some value or computes it from a closure.
Implements
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#
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public
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map(Closure $predicate): self
Maps an Option<T> to Option<U> by applying a function to a
contained value (if Some) or returns None (if None).
Maps an Option<T> to Option<U> by applying a function to a
contained value (if Some) or returns None (if None).
Implements
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#
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public
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mapOr<U, V>(V $default, Closure(never): U $predicate): V
Returns the provided default result (if none), or applies a function
to the contained value (if any). Arguments passed to Option::mapOr() are eagerly evaluated; if you are
passing the result of a function call, it is recommended to use Option::mapOrElse(),
which is lazily evaluated.
Returns the provided default result (if none), or applies a function
to the contained value (if any). Arguments passed to Option::mapOr() are eagerly evaluated; if you are
passing the result of a function call, it is recommended to use Option::mapOrElse(),
which is lazily evaluated.
Implements
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#
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public
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mapOrElse<U, V>(Closure(): V $default, Closure(never): U $predicate): V
Computes a default function result (if none), or applies a different function
to the contained value (if any).
Computes a default function result (if none), or applies a different function
to the contained value (if any).
Implements
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#
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public
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and(Option $other): self
Returns None if the option is None, otherwise returns $other. Arguments passed to Option::and() are eagerly evaluated; if you are
passing the result of a function call, it is recommended to use Option::andThen(),
which is lazily evaluated.
Returns None if the option is None, otherwise returns $other. Arguments passed to Option::and() are eagerly evaluated; if you are
passing the result of a function call, it is recommended to use Option::andThen(),
which is lazily evaluated.
Implements
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#
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public
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andThen(Closure $predicate): self
Returns None if the option is None, otherwise calls $other with the wrapped
value and returns the result.
Returns None if the option is None, otherwise calls $other with the wrapped
value and returns the result.
Implements
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#
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public
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filter(Closure $predicate): self
Returns None if the option is None, otherwise calls $predicate
with the wrapped value and returns:
Some(t) if predicate returns true (where t is the wrapped value), andNone if predicate returns false.
Returns None if the option is None, otherwise calls $predicate
with the wrapped value and returns:
Some(t) if predicate returns true (where t is the wrapped value), andNone if predicate returns false.
Implements
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#
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public
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or(Option $other): Option
Returns the option if it contains a value, otherwise returns $other. Arguments passed to Option::or() are eagerly evaluated; if you are
passing the result of a function call, it is recommended to use Option::orElse(),
which is lazily evaluated.
Returns the option if it contains a value, otherwise returns $other. Arguments passed to Option::or() are eagerly evaluated; if you are
passing the result of a function call, it is recommended to use Option::orElse(),
which is lazily evaluated.
Implements
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#
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public
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orElse(Closure $other): Option
Returns the option if it contains a value, otherwise calls
$other and returns the result.
Returns the option if it contains a value, otherwise calls
$other and returns the result.
Implements
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#
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public
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xor<S>(Option<S> $other): ($other is Some<S> ? Some<S> : self<T>)
Returns Some if exactly one of self, $other is Some, otherwise returns None.
Returns Some if exactly one of self, $other is Some, otherwise returns None.
Implements
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#
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public
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getIterator(): EmptyIterator
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#
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