Sha256: e4de21094069b4e3e327c3adb27df8c90c47a538e1bca8a4f89583484b404055
Contents?: true
Size: 1.24 KB
Versions: 288
Compression:
Stored size: 1.24 KB
Contents
pub struct Luhn {
digits: Vec<char>,
}
impl Luhn {
pub fn is_valid(&self) -> bool {
if self.digits.iter().any(|c| c.is_alphabetic()) || self.digits.iter().count() == 1 {
return false;
}
self.digits
.iter()
.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
}
}
impl From<String> for Luhn {
fn from(s: String) -> Self {
Luhn { digits: s.chars().collect() }
}
}
impl<'a> From<&'a str> for Luhn {
fn from(s: &'a str) -> Self {
Luhn::from(String::from(s))
}
}
impl From<u8> for Luhn {
fn from(s: u8) -> Self {
Luhn::from(s.to_string())
}
}
impl From<u16> for Luhn {
fn from(s: u16) -> Self {
Luhn::from(s.to_string())
}
}
impl From<u32> for Luhn {
fn from(s: u32) -> Self {
Luhn::from(s.to_string())
}
}
impl From<u64> for Luhn {
fn from(s: u64) -> Self {
Luhn::from(s.to_string())
}
}
impl From<usize> for Luhn {
fn from(s: usize) -> Self {
Luhn::from(s.to_string())
}
}
Version data entries
288 entries across 288 versions & 1 rubygems