Java ComparableͱSwift Comparable
• Java Comparable
• Swift Comparable
μΠϚ http://qiita.com/S_Shimotori/items/83e22d83f5c0096a6d5b
http://hg.openjdk.java.net/jdk8/jdk8/jdk/file/687fd7c7986d/src/share/classes/java/lang/Comparable.java
https://github.com/apple/swift/blob/c15c671372620b543e19a662218a247f601628e4/stdlib/public/core/Comparable.swift
※ ࣮ࡍEquatableͷ “=” ͱComparableͷ ”<“ Λ࣮͢ΕΓΔ