[−][src]Struct async_graphql::Lookahead

pub struct Lookahead<'a> { /* fields omitted */ }
[−]

A selection performed by a query

Implementations

impl<'a> Lookahead<'a>[src][−]

pub fn field(&self, name: &str) -> Lookahead<'_>[src][−]

Check if the specified field exists in the current selection.

pub fn exists(&self) -> bool[src][−]

Returns true if field exists otherwise return false.

Auto Trait Implementations

impl<'a> RefUnwindSafe for Lookahead<'a>

impl<'a> Send for Lookahead<'a>

impl<'a> Sync for Lookahead<'a>

impl<'a> Unpin for Lookahead<'a>

impl<'a> UnwindSafe for Lookahead<'a>

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src][+]

impl<T> Borrow<T> for T where
    T: ?Sized, [src][+]

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src][+]

impl<T> From<T> for T[src][+]

impl<T, U> Into<U> for T where
    U: From<T>, [src][+]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src][+]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src][+]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<V, T> VZip<V> for T where
    V: MultiLane<T>, [+]