Equality Method News Today

How to Write an Equality Method in Java by Martin Odersky, Lex Spoon, and Bill Venners June 1, 2009 equals method that preserves the contract of equals even when subclassses of concrete classes add new fields. In Item 8 of 1, Josh Bloch describes the difficulty of preserving the equals contract when subclassing as a “fundamental problem of equivalence relations in object-oriented languages.” Bloch writes: There is no way to extend an instantiable class and add a value component while pre...

♪ auld lang syne >> well, welcome back, everybody. there is no better person in the world to put holiday cheer into your holiday gathering than the one and only tim laird, chief entertaining officer and author of the book "thats entertaining" is here to make sure everyone has a great time. new years again here we are. last one for the year. you came with some -- bearing some of my favorite things -- sweets and booze. >> you bet, rob. absolutely. try to break out the bubbles. we have some tips ...