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Trevor Gross 851fbcb092
Rollup merge of #142331 - deven:trim_prefix_suffix, r=Amanieu 
Add `trim_prefix` and `trim_suffix` methods for both `slice` and `str` types.

Implements `trim_prefix` and `trim_suffix` methods for both `slice` and `str` types, which remove at most one occurrence of a prefix/suffix while always returning a string/slice (rather than Option), enabling easy method chaining.

## Tracking issue
rust-lang/rust#142312

## API
```rust
impl str {
    pub fn trim_prefix<P: Pattern>(&self, prefix: P) -> &str;
    pub fn trim_suffix<P: Pattern>(&self, suffix: P) -> &str
    where
        for<'a> P::Searcher<'a>: ReverseSearcher<'a>;
}

impl<T> [T] {
    pub fn trim_prefix<P: SlicePattern<Item = T> + ?Sized>(&self, prefix: &P) -> &[T]
    where
        T: PartialEq;
    pub fn trim_suffix<P: SlicePattern<Item = T> + ?Sized>(&self, suffix: &P) -> &[T]
    where
        T: PartialEq;
}
```

## Examples
```rust
// Method chaining
assert_eq!(" <https://example.com/> ".trim().trim_prefix('<').trim_suffix('>').trim(), "https://example.com/");

// Slices
let v = &[10, 40, 30];
assert_eq!(v.trim_prefix(&[10]), &[40, 30][..]);
```

## ACP
Originally proposed in rust-lang/libs-team#597
2025-06-20 13:35:58 -04:00
..
alloc Rollup merge of #142668 - hkBst:less-static-mut, r=tgross35 2025-06-20 02:50:39 -04:00
alloctests Rollup merge of #142668 - hkBst:less-static-mut, r=tgross35 2025-06-20 02:50:39 -04:00
backtrace@b65ab935fb Update the backtrace submodule 2025-06-16 07:00:13 +00:00
compiler-builtins Work around out-of-tree testing with a shim crate 2025-06-14 06:56:18 +00:00
core Rollup merge of #142331 - deven:trim_prefix_suffix, r=Amanieu 2025-06-20 13:35:58 -04:00
coretests Rollup merge of #142668 - hkBst:less-static-mut, r=tgross35 2025-06-20 02:50:39 -04:00
panic_abort Use the in-tree compiler-builtins 2025-06-08 02:36:58 +00:00
panic_unwind Rollup merge of #141993 - tgross35:use-in-tree-builtins, r=bjorn3 2025-06-09 12:17:53 -05:00
portable-simd Merge commit 'c14f2fc3eb' into sync-from-portable-simd-2025-03-19 2025-03-19 00:58:47 -04:00
proc_macro Add support for repetition to proc_macro::quote 2025-06-17 01:36:54 +09:00
profiler_builtins Fix profiler_builtins build script to handle full path to profiler lib 2025-04-11 16:57:38 +02:00
rtstartup library/compiler: add PointeeSized bounds 2025-06-16 23:04:33 +00:00
rustc-std-workspace-alloc Migrated the rustc-std-workspace crates to Rust 2024 2025-03-11 09:46:35 -07:00
rustc-std-workspace-core Use the in-tree compiler-builtins 2025-06-08 02:36:58 +00:00
rustc-std-workspace-std Migrated the rustc-std-workspace crates to Rust 2024 2025-03-11 09:46:35 -07:00
std Rollup merge of #141990 - Qelxiros:141975-unix_send_signal, r=ChrisDenton,tgross35 2025-06-20 02:50:38 -04:00
stdarch@1b4d15df12 Update the stdarch submodule 2025-06-12 07:59:13 +00:00
sysroot Update stdarch 2025-05-01 20:01:43 +05:30
test Add new test_main_with_exit_callback public function in libtest to allow a callback to be called before exiting 2025-05-06 18:17:48 +02:00
unwind Upgrade the standard library unwinding version 2025-06-11 20:05:06 +00:00
windows_targets Fix backtrace for cygwin 2025-05-07 13:08:19 +08:00
Cargo.lock Update library dependencies 2025-06-19 18:39:08 -04:00
Cargo.toml Use the in-tree compiler-builtins 2025-06-08 02:36:58 +00:00