Struct regex::NoExpand

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pub struct NoExpand<'s>(pub &'s str);
Expand description

A helper type for forcing literal string replacement.

It can be used with routines like Regex::replace and Regex::replace_all to do a literal string replacement without expanding $name to their corresponding capture groups. This can be both convenient (to avoid escaping $, for example) and faster (since capture groups don’t need to be found).

's is the lifetime of the literal string to use.

§Example

use regex::{NoExpand, Regex};

let re = Regex::new(r"(?<last>[^,\s]+),\s+(\S+)").unwrap();
let result = re.replace("Springsteen, Bruce", NoExpand("$2 $last"));
assert_eq!(result, "$2 $last");

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§0: &'s str

Trait Implementations§

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impl<'s> Clone for NoExpand<'s>

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fn clone(&self) -> NoExpand<'s>

Returns a copy 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<'s> Debug for NoExpand<'s>

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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<'s> Replacer for NoExpand<'s>

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fn replace_append(&mut self, _: &Captures<'_>, dst: &mut String)

Appends possibly empty data to dst to replace the current match. Read more
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fn no_expansion(&mut self) -> Option<Cow<'_, str>>

Return a fixed unchanging replacement string. Read more
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fn by_ref<'r>(&'r mut self) -> ReplacerRef<'r, Self>

Returns a type that implements Replacer, but that borrows and wraps this Replacer. Read more

Auto Trait Implementations§

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impl<'s> Freeze for NoExpand<'s>

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impl<'s> RefUnwindSafe for NoExpand<'s>

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impl<'s> Send for NoExpand<'s>

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impl<'s> Sync for NoExpand<'s>

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impl<'s> Unpin for NoExpand<'s>

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impl<'s> UnwindSafe for NoExpand<'s>

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> 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, 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.