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IterContext

Struct IterContext 

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pub struct IterContext<'a> {
    pub iter_name: &'a str,
    pub index: IterIndex<'a>,
    pub depth: usize,
}
Expand description

Per-iteration context surfaced to hooks for steps running inside an iter_array or iter_map body.

Exposes the enclosing iteration’s name, the current index or key, and the nesting depth (outermost iteration is 0). Hooks can use the nesting depth for indentation and the index for filtering or profiling per element.

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§iter_name: &'a str

The name of the enclosing iteration node.

§index: IterIndex<'a>

The current iteration’s index or key.

§depth: usize

Zero-based depth: 0 for the outermost iteration, 1 for one level of nesting, and so on.

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impl<'a> Clone for IterContext<'a>

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fn clone(&self) -> IterContext<'a>

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'a> Debug for IterContext<'a>

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

Formats the value using the given formatter. Read more
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impl Display for IterContext<'_>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a> Freeze for IterContext<'a>

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impl<'a> RefUnwindSafe for IterContext<'a>

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impl<'a> Send for IterContext<'a>

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impl<'a> Sync for IterContext<'a>

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impl<'a> Unpin for IterContext<'a>

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impl<'a> UnsafeUnpin for IterContext<'a>

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impl<'a> UnwindSafe for IterContext<'a>

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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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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.