1 stable release
1.0.0 | May 27, 2024 |
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#754 in Data structures
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28KB
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vec-entries
Entry API for iterating over and removing elements from a Vec
.
Description
Sometimes you want to do efficently remove and modify elements of a Vec
in a slightly more
complex way than Vec::dedup_by
, Vec::retain
, or Vec::drain
enable. This crate aims
to target a similar, but more expansive functionality.
Usage
Just import the extension trait and call the new method. The EntriesExt::entries
enables
iterating across elements, mutating, removing, and re-inserting as needed. Like
Vec::dedup_by
this is done by passing in a function which take an Entries
object and
returns anything.
use vec_entries::EntriesExt;
let mut v = vec![1, 2, 3];
let c = v.entries(.., |e| {
let a = e.remove().unwrap(); // Remove the `1`
let b = e.remove_back().unwrap(); // Remove the `3`
e.try_insert_outside(0); // Insert a `0` where we removed the `1`
a + b
});
assert_eq!(c, 4);
assert_eq!(v, [0, 2]);
License
Licensed under
- MIT license (LICENSE or https://opensource.org/licenses/MIT)