Struct FuncRef 

pub struct FuncRef(/* private fields */);

A nullable reference to a Func.

Implementations

impl FuncRef

pub fn new(func: impl Into<Option<Func>>) -> Self

Creates a new FuncRef.

pub fn null() -> Self

Creates a null FuncRef.

pub fn is_null(self) -> bool

Returns true if this FuncRef is null.

pub fn get(self) -> Option<Func>

Returns the underlying Func if this FuncRef is not null.

Trait Implementations

impl Clone for FuncRef

fn clone(&self) -> FuncRef

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FuncRef

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<Func> for FuncRef

fn from(func: Func) -> Self

Converts to this type from the input type.

impl From<FuncRef> for Ref

fn from(val: FuncRef) -> Self

Converts to this type from the input type.

impl From<FuncRef> for Val

fn from(val: FuncRef) -> Self

Converts to this type from the input type.

impl Hash for FuncRef

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for FuncRef

fn eq(&self, other: &FuncRef) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for FuncRef

impl Eq for FuncRef

impl StructuralPartialEq for FuncRef