Function search

pub fn search(data: &[u8], cond: impl Fn(Vector) -> Vector) -> Option<usize>

Find the first byte that meets the cond

Arguments

• data - The haystack to search
• cond - The condition to find the first occurrence of

Returns

• Some(position) - The first position where the condition was met, this position will always be less than data.len() ensuring that indexing it will never panic. If you’re interested in further investigating this claim see arch/simd_scan.rs.
• None - There was no circumstance of the condition being met.

Example

use swift_check::{search, eq};

let input = b"some data with a 5 burger 383294 hello world blah blah blah";
if let Some(pos) = search(input, eq(b'5')) {
    assert_eq!(input[pos], b'5');
} else {
    unreachable!("input contained a 5");
}