> So, then the rule would be "when using when, there is an implied last when used inside a given, but there's an implied next when used inside a for"?

No it's always an implied "next", for one-time-loops "next" and "last" just mean the same thing.

BTW: perlsyn already has such a complicated rule:

Every "when" block is implicitly ended with a "break".
and

Instead of using "given()", you can use a "foreach()" loop. ... On exit from the "when" block, there is an implicit "next".

> I rather have given to be different from for, then given to be another alias for for/foreach.

My intention was to have a "foreach" variant without automatic aliasing of the variable...

> Changing the context means that you break given(@ARRAY).

Yep, it's too late to change "given" now ...

I still prefer avoiding "given/when" at least until I'm smart enough for smart match.

And passing lists of arrays is no problem with \(...)

  DB<100> @a=1..3
 
  DB<101> @b=4..6
 
  DB<102> for (\(@a,@b)) {print}
ARRAY(0xa3dcd78)ARRAY(0xa3dcc48)
  DB<103> for (\(@a,@b)) {print @$_}
123456

[download]

while "given" relies on magic:

So "given(@foo)" is the same as "given(\@foo)"

Cheers Rolf

In reply to Re^8: "when" and replacements by LanX
in thread "when" and replacements by John M. Dlugosz

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