worley@compass.com (Dale Worley) (04/04/91)
I was writing a recursive function that contained a foreach statement,
so I made sure to localize the array it was iterating over:
local(@dependencies) = ...;
foreach (@dependencies) {...}
Somewhat to my surprise, the recursive execution of the loop
interfered with the proper operation of the outer execution. I found
that I have to localize the symbol table entry (if that's how you say
it):
local(*dependencies);
@dependencies = ...;
foreach (@dependencies) {...}
This is probably not a bug, but it led me to wonder how you deal with
recursive loops like:
foreach $i ($a .. $b) {...}
Dale
Dale Worley Compass, Inc. worley@compass.com
--
And then there is the scientific problem known as "Schroedinger's pussy"...lwall@jpl-devvax.jpl.nasa.gov (Larry Wall) (04/09/91)
In article <1991Apr3.233616.11680@uvaarpa.Virginia.EDU> worley@compass.com writes:
: I was writing a recursive function that contained a foreach statement,
: so I made sure to localize the array it was iterating over:
:
: local(@dependencies) = ...;
: foreach (@dependencies) {...}
:
: Somewhat to my surprise, the recursive execution of the loop
: interfered with the proper operation of the outer execution. I found
: that I have to localize the symbol table entry (if that's how you say
: it):
:
: local(*dependencies);
: @dependencies = ...;
: foreach (@dependencies) {...}
:
: This is probably not a bug, but it led me to wonder how you deal with
: recursive loops like:
:
: foreach $i ($a .. $b) {...}
That's handled by translating internally to
local(@_GEN_1) = ($a .. $b);
foreach $i (@_GEN_1) {...}
Only when you use a bare array do you get the direct references into the array.
That still doesn't say why your original didn't work though...
Larry