Associative arrays, opCmp, opEquals and toHash in 2.066.0-b4

[w0rp via Digitalmars-d]

A rule I learned from writing Java is that if you implement 
equality, you must also implement hashing, and if you implelement 
hashing you must implement equality. I believe this is actually a 
general truth of programming in any language, and now D has the 
right kind of semantics.

On an off topic note, I noticed your signature, H.S. Teoh.

> "640K ought to be enough" -- Bill G., 1984.

That quote is well known for being fabricated. The year varies 
wildly. There's no evidence of Bill ever saying it which isn't 
someone saying, "Trust me, I heard him say it once."