Rust part8

[855 デフォルトの名無しさん 2020/07/14(火) 16:21:46.36 ID:0FZUPBc1]

match delta.cmp(&0) {
std::cmp::Ordering::Equal => "",
std::cmp::Ordering::Greater => "-",
std::cmp::Ordering::Less => "+",
}