pub struct OptionMarker;Expand description
A marker type for Option<T> to implement FromQueryArgument.
Trait Implementations§
Source§impl<T: Default + FromStr> FromQueryArgument<OptionMarker> for Option<T>
impl<T: Default + FromStr> FromQueryArgument<OptionMarker> for Option<T>
Source§impl<T: Display> ToQueryArgument<OptionMarker> for Option<T>
impl<T: Display> ToQueryArgument<OptionMarker> for Option<T>
Auto Trait Implementations§
impl Freeze for OptionMarker
impl RefUnwindSafe for OptionMarker
impl Send for OptionMarker
impl Sync for OptionMarker
impl Unpin for OptionMarker
impl UnsafeUnpin for OptionMarker
impl UnwindSafe for OptionMarker
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> InitializeFromFunction<T> for T
impl<T> InitializeFromFunction<T> for T
Source§fn initialize_from_function(f: fn() -> T) -> T
fn initialize_from_function(f: fn() -> T) -> T
Create an instance of this type from an initialization function
Source§impl<T> Instrument for T
impl<T> Instrument for T
Source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
Source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
Source§impl<Ret> SpawnIfAsync<(), Ret> for Ret
impl<Ret> SpawnIfAsync<(), Ret> for Ret
Source§impl<T, O> SuperFrom<T> for Owhere
O: From<T>,
impl<T, O> SuperFrom<T> for Owhere
O: From<T>,
Source§fn super_from(input: T) -> O
fn super_from(input: T) -> O
Convert from a type to another type.
Source§impl<T, O, M> SuperInto<O, M> for Twhere
O: SuperFrom<T, M>,
impl<T, O, M> SuperInto<O, M> for Twhere
O: SuperFrom<T, M>,
Source§fn super_into(self) -> O
fn super_into(self) -> O
Convert from a type to another type.