https://github.com/discretetom/in_str

A procedural macro to generate a closure that checks if a character is in the provided literal string.
https://github.com/discretetom/in_str

rust

Last synced: 3 months ago
JSON representation

A procedural macro to generate a closure that checks if a character is in the provided literal string.

• Host: GitHub
• URL: https://github.com/discretetom/in_str
• Owner: DiscreteTom
• License: mit
• Created: 2024-11-20T12:36:32.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2025-02-02T03:48:00.000Z (11 months ago)
• Last Synced: 2025-10-14T12:49:59.019Z (3 months ago)
• Topics: rust
• Language: Rust
• Homepage:
• Size: 9.77 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

Awesome Lists containing this project

README

          
# `in_str!`

![license](https://img.shields.io/github/license/DiscreteTom/in_str?style=flat-square)

[![Crates.io Version](https://img.shields.io/crates/v/in_str?style=flat-square)](https://crates.io/crates/in_str)

[![docs.rs](https://img.shields.io/docsrs/in_str?style=flat-square)](https://docs.rs/in_str/)

A procedural macro to generate a closure that checks if a character is in the provided literal string.

## Installation

```bash

cargo add in_str

```

## Usage

```rust

use in_str::in_str;

let _ = in_str!("abc");

// equals to

let _ = |c: char| matches!(c, 'a' | 'b' | 'c');

// usually faster than

let _ = |c: char| "abc".contains(c);

// escape will be handled automatically

let _ = in_str!("\n\u{10ffff}");

// equals to

let _ = |c: char| matches!(c, '\n' | '\u{10ffff}');

// also works with byte strings

let _ = in_str!(b"abc");

// equals to

let _ = |c: u8| matches!(c, b'a' | b'b' | b'c');

// escape will be handled automatically

let _ = in_str!(b"\n\xff");

// equals to

let _ = |c: u8| matches!(c, b'\n' | 0xff);

```

## [Documentation](https://docs.rs/in_str/)

## [CHANGELOG](./CHANGELOG.md)