str_utils/
starts_with_multiple.rs

1/// To extend `[u8]` and `str` to have a `starts_with_multiple` method.
2pub trait StartsWithMultiple {
3    /// Returns `Some(usize)` if one of the given string slices case-sensitively matches a prefix of this string slice.
4    fn starts_with_multiple<S: AsRef<[u8]>>(&self, bs: &[S]) -> Option<usize>;
5}
6
7impl StartsWithMultiple for [u8] {
8    #[inline]
9    fn starts_with_multiple<S: AsRef<[u8]>>(&self, bs: &[S]) -> Option<usize> {
10        let a = self;
11
12        bs.iter().position(|b| a.starts_with(b.as_ref()))
13    }
14}
15
16impl StartsWithMultiple for str {
17    #[inline]
18    fn starts_with_multiple<S: AsRef<[u8]>>(&self, bs: &[S]) -> Option<usize> {
19        self.as_bytes().starts_with_multiple(bs)
20    }
21}