Struct LookAheadChildren

pub struct LookAheadChildren<'a, S> { /* private fields */ }

Children of a LookAheadSelection.

Implementations

impl<'a, S> LookAheadChildren<'a, S>

pub fn len(&self) -> usize

Returns the number of children present.

pub fn is_empty(&self) -> bool

Indicates whether the current selection has any children.

pub fn select(&self, name: &str) -> Option<LookAheadSelection<'a, S>>

Returns the child selection for the specified field.

If a child has an alias, it will only match if the alias matches the specified name.

pub fn has_child(&self, name: &str) -> bool

Checks if the child selection with the specified name exists.

If a child has an alias, it will only match if the alias matches the specified name.

pub fn names(&self) -> impl DoubleEndedIterator<Item = &'a str> + '_

Returns the possibly aliased names of the top-level children from the current selection.

pub fn iter( &self, ) -> impl DoubleEndedIterator<Item = &LookAheadSelection<'a, S>> + '_

Returns an Iterator over these children, by reference.

Trait Implementations

impl<'a, S> Clone for LookAheadChildren<'a, S>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a, S: Debug> Debug for LookAheadChildren<'a, S>

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

Formats the value using the given formatter.

impl<'a, S> Default for LookAheadChildren<'a, S>

fn default() -> Self

Returns the “default value” for a type.

impl<'a, S: ScalarValue> IntoIterator for LookAheadChildren<'a, S>

type Item = LookAheadSelection<'a, S>

The type of the elements being iterated over.

type IntoIter = IntoIter<<LookAheadChildren<'a, S> as IntoIterator>::Item>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.