DynamicVariable

fluid_let

Struct DynamicVariable 

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pub struct DynamicVariable<T: 'static> { /* private fields */ }
Expand description

A global dynamic variable.

Declared and initialized by the fluid_let! macro.

See crate-level documentation for examples.

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impl<T> DynamicVariable<T>

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pub fn get<R>(&self, f: impl FnOnce(Option<&T>) -> R) -> R

Access current value of the dynamic variable.

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pub fn set<R>(&self, value: impl Borrow<T>, f: impl FnOnce() -> R) -> R

Bind a new value to the dynamic variable.

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impl<T: Clone> DynamicVariable<T>

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pub fn cloned(&self) -> Option<T>

Clone current value of the dynamic variable.

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impl<T: Copy> DynamicVariable<T>

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pub fn copied(&self) -> Option<T>

Copy current value of the dynamic variable.

Auto Trait Implementations§

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impl<T> Freeze for DynamicVariable<T>

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impl<T> RefUnwindSafe for DynamicVariable<T>

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impl<T> Send for DynamicVariable<T>

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impl<T> Sync for DynamicVariable<T>

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impl<T> Unpin for DynamicVariable<T>

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impl<T> UnwindSafe for DynamicVariable<T>

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 8 bytes