In the spirit of TMTOWTDI, you could also simply use a temporary array... 
my @arr = (1,2,3,4,5,6);
my @tmp;
foreach (@arr) {
   push @tmp, ($_ > 2) ? munge($_) : $_;
}
@arr = @tmp;
print @arr;   # 1 2 3 x y z 5 x y z

sub munge {
   ($_[0] % 2) ? $_[0] : ("x","y","z");
}

[download]
....but personally, I'd use a map, as suggested above.

Cheers, Ben.

In reply to Re: Inserting into an array while stepping through it by benn
in thread Inserting into an array while stepping through it by Anonymous Monk

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