Function roe::to_ascii_lowercase

pub fn to_ascii_lowercase<T: AsRef<[u8]>>(slice: T) -> Vec<u8>

Available on crate feature alloc only.

Returns a vector containing a copy of the given slice where each byte is mapped to its ASCII lower case equivalent.

ASCII letters ‘A’ to ‘Z’ are mapped to ‘a’ to ‘z’, but non-ASCII letters are unchanged.

This function can be used to implement String#downcase and Symbol#downcase for ASCII strings in Ruby.

To lowercase the value in-place, use make_ascii_lowercase. This function is analogous to <[u8]>::to_ascii_lowercase.

Examples

assert_eq!(to_ascii_lowercase("ABCxyz"), &b"abcxyz"[..]);
assert_eq!(to_ascii_lowercase("1234%&*"), &b"1234%&*"[..]);