pub fn strip_prefix<'a>(line: &'a str, prefix: &str) -> Option<&'a str>Expand description
Returns the text after <prefix>: when line starts with prefix (ASCII case-insensitive).
Surrounding whitespace / CR LF and spaces before or after the colon are allowed.
strip_prefix("+CREG: 1", "+CREG") is Some("1"); "+CREGX: 1" does not match.