That's pretty cool! When I first started with ruby, it was the first
time I'd ever used closures, or blocks as ruby calls them. At first,
I thought they were just a fancy way to program and really not needed.
Boy, was I wrong. Great to see that you're adding them in!
On 10/4/07, Sean Corfield <[EMAIL PROTECTED]> wrote:
> On 10/3/07, Zaphod Beeblebrox <[EMAIL PROTECTED]> wrote:
> > # our test input
> > input = 25
> >
> > # change the list to an array
> > nums = "32,48,64,72,144,160,200,288,320,400,512,576,640,720,800".split(",")
> >
> > # find all the numbers which would be smaller
> > target = nums.find_all {|num| input >= num.to_i }
>
> Well, with my Closures for ColdFusion library and the Collection class
> I added to it on the flight back from MAX, that would look like:
>
> nums = listToArray("32,48,64,72,144,160,200,288,320,400,512,576,640,720,800");
> target = createObject("component","Collection").init(nums).select(
> "num", "25 gte num" );
>
> or, if you wanted to isolate input = 25, use the Closure factory:
>
> cf = createObject("component","ClosureFactory");
> findGTE = cf.new( "threshold gte num", "num" );
>
> input = 25;
> target = createObject("component","Collection").init(nums).select(
> findGTE.bind(threshold=input) );
>
> Whilst I accept that it isn't quite as clean as the Ruby syntax, it
> certainly is possible with ColdFusion...
>
> The Collection class is modeled after Smalltalk...
>
> Want to add up all the elements in a collection of numbers?
>
> total = someCollection.inject( 0, "sum,x", "sum + x" );
>
> Count how many four letter words are in a collection of words?
>
> num = wordCollection.count( "w", "len(w) eq 4" );
>
> The closure factory (which is also used by the collection class)
> caches the generated code so it gives good performance.
>
> I'll be blogging about the new Collection class soon - I just need to
> finish the documentation.
> --
> Sean A Corfield -- (904) 302-SEAN
> An Architect's View -- http://corfield.org/
>
> "If you're not annoying somebody, you're not really alive."
> -- Margaret Atwood
>
>
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