Function core::slice::memchr::memchr

pub fn memchr(x: u8, text: &[u8]) -> Option<usize>

🔬 This is a nightly-only experimental API. (slice_internals)

exposed from core to be reused in std; use the memchr crate

返回与 text 中的字节 x 匹配的第一个索引。