偶校验
偶校验是一个整数偶校验微库。它告诉您一个整数是偶数还是奇数！
示例
✓ 辅助工具
2.isEven
// true
3.isOdd
// true
✓ 有助于提高代码可读性的枚举
// Before:
if (number % 2 == 0) {
print("even")
} else {
print("odd")
}
// After:
switch number.parity {
case .even:
print("even")
case .odd:
print("odd")
}
// Before:
if (numberA % 2 == numberB % 2) {
print("both numbers have the same parity")
}
// After:
if (numberA.parity == numberB.parity) {
print("both numbers have the same parity")
}