Right - I'm on forbidden ground. Perlsyn says:
  If any part of LIST is an array, "foreach" will get very
  confused if you add or remove elements within the loop
  body, for example with "splice".   So don’t do that

[download]
I guess what's happening is something like this (psudocode):

  $it = &make_list_into_iterator(LIST);
  $count = $it->figure_out_element_count;

  while ($count-- > 0) {
    $_ = $it->next;

    CODE
  }

[download]
Which fits the behaviour I see.

-- zigdon

In reply to Re^2: Mutable foreach list? by zigdon
in thread Mutable foreach list? by zigdon

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