Sha256: 887b1a288c311b32b53dbcc9d887fd7bb53f64341d686da8f3ff114860a8b1a4
Contents?: true
Size: 486 Bytes
Versions: 304
Compression:
Stored size: 486 Bytes
Contents
pub fn is_valid(candidate: &str) -> bool {
if candidate.chars().filter(|c| c.is_digit(10)).take(2).count() <= 1 ||
candidate.chars().any(|c| !c.is_digit(10) && c != ' ') {
return false;
}
candidate.chars()
.filter_map(|c| c.to_digit(10))
.rev()
.enumerate()
.map(|(index, digit)| if index % 2 == 0 { digit } else { digit * 2 })
.map(|digit| if digit > 9 { digit - 9 } else { digit })
.sum::<u32>() % 10 == 0
}
Version data entries
304 entries across 304 versions & 1 rubygems