reddit - lazy evaluation of function arguments

[Sean Kelly]

== Quote from Georg Wrede (georg at nospam.org)'s article
> Walter Bright wrote:
> > http://www.reddit.com/info/6pkri/comments/
> ...
> http://www.digitalmars.com/d/2.0/lazy-evaluation.html
> Hmm. I guess I should've kept a log of all my original suggestions... :-)
> Incidentally, the first few examples and cases are not all too
> convincing (not too much reduction in code lines or complexity), which
> is why I guess a lot of readers quit before the end, where there
> actually is one compelling example. And probably a number of readers
> (who aren't familiar and used to lazy evaluation somewhere else)
> are left with the thought that it isn't all too good for other than
> precisely the last example.
> But I can't figure out how to improve the page either. :-(

The most compelling use of lazy functions I've found is for logging
purposes--you only pay for the computation when the proper log
level is activated.  The Tango logging package makes extensive use
of them for this reason.


Sean