substr

A helper crate for substring functionality for Rust's str type.

Usage

Add the following to your project's Cargo.toml to include substr as a dependencie.

[dependencies]
substr = { git = "https://github.com/srbdev/substr" }

fn firstn(s: &str, n: usize) -> &str

Returns the first nth characters from the input string s.

fn lastn(s: &str, n: usize) -> &str

Returns the last nth characters from the input string s.

fn slice(s: &str, start: usize, end: usize) -> &str

Return the substring of the input string s with indices [start, end).

Note: substr will only work on UTF-8 sequences or may otherwise reference invalid memory or violate the invariants communicated by the str type.