Fast switching..

[Georg Wrede]

Regan Heath wrote:
> Hi all,
> 
> I've been AWOL from this NG for a while but recently a friend of mine 
> sent me a link to this:
> http://blogs.msdn.com/jomo_fisher/archive/2007/03/28/fast-switching-with-linq.aspx 
> 
> and my first thought was; can something similar (or even better) be done 
> in D. :)
> 
> I admit, I haven't even spent 5 mins thinking about how I might do it, 
> but I've never been particularly good with the compile time features of 
> D so I figured I'd post something here and see what the people who are 
> good at it can come up with.
> 
> So, consider this a little challenge .. it may turn out to be trivial, 
> it might not, I have no idea.

A language that allows you to write switch statements with strings 
should have this built-in. But that is actually a quality of 
implementation issue, and therefore transparent to the spec.

In real life, if I were to tackle this and there were less than two 
dozen words, I'd figure it out manually. This would also allow for 
optimizations, like if I expect some of the words to occur more often 
than others.

If this is something I expect to come across regularly, I'd write a 
small D program that takes as input a list of words with their number 
and another number that hints at how often I expet the word. This 
program would output the bit of D source code that I'd paste into my 
application.

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There ought to be a site collecting code snippets, idioms, and tiny 
utility programs that help in programming. And with good search 
capabilities.