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I have an array of hashes, @Tree. One of the elements in each hash, Path is itself an array of digits. For each element in @Tree, \$_->{Path} can have from one to five (at present - could be even more) elements. And I need to sort @Tree so that it's sorted first by \$_->{Path}->[0], then by \$_->{Path}->[1] and so on.

In case that doesn't make any sense, I've done
```    for my \$h (@Tree) {
print "\$_ " for @{\$h->{Path}};
print "\n";
}
... for before and after, to show what I'm trying to achieve:

BEFORE
```5 32 37
5 32 38
5 32 39
3 12 11 19 20
3 12 11 21
3 12 22
3 12 23
5 32 40
3 12 24
5 32 41
3 25
5 32 42
2 26
5 32 43
2 26 27
2 26 28
2 26 29
0 1
1 2
1 3
3 12 10
1 4
3 12 11
1 5
3 12
2 6
3 12 13
3 12 7
3 12 11 19 14
3 12 8
2 26 30
3 12 11 19 15
3 12 9
5 32 31
3 12 11 19 16
5 32
3 12 11 19 17
5 32 33
3 12 11 19 18
5 32 34
3 12 11 19
5 32 35
5 32 36
AFTER:
```0
1 2
1 3
1 4
1 5
2 6
2 26
2 26 27
2 26 28
2 26 29
2 26 30
3 12
3 12 7
3 12 8
3 12 9
3 12 10
3 12 11
3 12 11 19
3 12 11 19 14
3 12 11 19 15
3 12 11 19 16
3 12 11 19 17
3 12 11 19 18
3 12 11 19 20
3 12 11 21
3 12 13
3 12 22
3 12 23
3 12 24
3 25
5 32
5 32 31
5 32 33
5 32 34
5 32 35
5 32 36
5 32 37
5 32 38
5 32 39
5 32 40
5 32 41
5 32 42
5 32 43
I've tried lots of different variations on
```    for (5..0) {
@Tree = sort {
\$a->{Path}->[\$_] <=> \$b->{Path}->[\$_]
} @Tree;
}
... none of which worked. In the end I gave up in disgust and did
```    for my \$page (@Tree) {
my \$Sort = 0;
my \$M = 100;
for (@{\$page->{Path}}) {
\$Sort += \$M * \$_;
\$M = \$M / 100;
}
\$page->{Sort} = \$Sort;
}

@Tree = sort {\$a->{Sort} <=> \$b->{Sort}} @Tree;
... which works, but is UGLY and probably slow and fattening. I'd really love to see a more elegant solution, if some monk can suggest one. Now, I got this result with the following rather clunky method:

§ George Sherston

Title:
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