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 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.