is_valid_range

range_split::str

Function is_valid_range 

Source 
pub fn is_valid_range<S, R>(s: S, range: &R) -> bool
where
    S: AsRef<str>,
    R: RangeBounds<usize>,
Expand description

Checks that range is valid for splitting the string slice s.

The range is valid if it fits within the slice and its bounds are on UTF-8 code point boundaries.