Re: array element as foreach iterator

It's consistent with the documentation, which says a VAR is expected (with an optional my). $y[0] is an expression, not a variable. I suppose it could be considered a limitation, but not a bug.

The following can be used. If you want to next an arbitrary number of loops, check out Algorithm::Loops.

foreach $y0 (@x) {
  foreach $y1 (@x) { 
    do_something($y0, $y1);
  }
}
[download]

Comment on Re: array element as foreach iterator Select or Download Code

Replies are listed 'Best First'.
Re^2: array element as foreach iterator by nobull (Friar) on Jan 27, 2005 at 18:33 UTC
It's consistent with the documentation, which says a VAR is expected (with an optional `my`). It should be pointed out that if the variable is already declared lexical in an enclosing scope then the `my` is assumed. i.e. it is not the previously declared lexical that is used but a different one. IMNSHO perl should throw a warning when it infers an implicit `my`.	[reply] [d/l] [select]
Re^2: array element as foreach iterator by kingm61 (Initiate) on Jan 27, 2005 at 17:14 UTC
OK, that explains why. I must use simple scalar variables (or the default $_) as a for/foreach iterator. Thanks.	[reply]