On Monday, June 16, 2003, at 08:19 AM, Dominik Werder wrote:
[snip]
But could you tell me where I can read more about this operator?
> google doesn't like the search term "||=" :(
> [snip]

The explanation could be added to

http://www.rubygarden.org/ruby?FunnySymbolsInCode

which is a good reference to lots of symbols.