turnip-rs

Ternary operators (turnips) for Rust.

Rather than creating a functional procedural macro to parse yet-another domain-specific syntax (a language within a language), turnip provides the simplest possible solution. The result is recursion without additional function calls and consistency with Rust syntax rules, which does not support overloading the ? and : operators.

The solution is a single 16-line macro defined using macro_rules!. See for yourself. Unlike other solutions out there, such as terny, tern, iffy and ternop, turnip combines simplicity with built-in support for recursion to more closely match a ternary operator design pattern.

What more do you need?

Installation

$ cargo add turnip

Usage

use turnip::ifelse;

fn main() {

    result1: bool = ifelse!(10 < 0, true, false);
    result2: bool = ifelse!(10 < 0, true, 10 == 0, true, false);
    assert!(result1 == result2);

}

License

MIT License