OpenEuphoria

Re: 2.6 feature request: foreach

• Posted by Jason Gade <jaygade at yahoo.com> Jul 13, 2005
• 448 views

D. Newhall wrote:
> 
> I think that the next release should have something new and useful to the
> language.
> Sure, you could do "continue" or "next" or something but will everyone use
> them? When
> I was looking at all the code I've written I realized that maybe around half
> of all
> my "for" loops were being used to reference each element in a sequence one
> after another.
> Due to this I think that a "foreach" statement would be a VERY useful addition
> to the
> language that I'm sure everyone would use.
> 
> It's syntax could go like so:
> 
> Instead of
> 
> sequence line
> line = gets(0)
> for i=1 to length(line)
>     if line[i] = -- something
>         -- code goes here
>     end if
> end for
> 
> One would type
> 
> sequence line
> line = gets(0)
> foreach element in line do
>     if element = -- something
>         -- code goes here
>     end if
> end foreach
> 
> Here "element" would implicitly be declared as an object and act just like the
> current
> loop variable in "for". However, after every iteration of the loop "element"
> will be
> set to the next next element in "line". A consideration would be to optimize
> expressions
> of the type "foreach obj in reverse(seq)do"
> 

In the context of a language that has a sequence as its major selling point,
foreach makes a lot of sense.

=====================================
Too many freaks, not enough circuses.

j.