sort() array of strings in perl


 
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# 1  
Old 10-04-2004
sort() array of strings in perl

I have a perl script with an array of clients.

@arr = ("The ABC Corp", "AA Corp.", "BB Corp");

If I run

@a = sort (@arr);

I will get

@a = ("AA Corp", "BB Corp", "The ABC Corp");

but I want

@a = ("AA Corp, "The ABC Corp", "BB Corp");

How do I sort array without changing contents, but ignoring "The " at beginning of string using sort() function?

I do not think there is a way of doing this without writing my own sort function, but with perl you never know.
# 2  
Old 10-09-2004
Yeah you don't necessarily need to make a dedicated sort function for that ... my code is as follows for your reference, but that is no different from a sort function anyway.

Code:
#!/usr/bin/perl

@a = ("The ABC Corp", "AA Corp.","BB Corp");
@sorted = sort { 
 @name_pair = map { /^(The )?(.*)$/; $2; } ($a, $b);
 $name_pair[0] cmp $name_pair[1]; 
} @a;
foreach $item (@sorted) {
 print "$item\n";
}

Output:
Code:
AA Corp.
The ABC Corp
BB Corp

# 3  
Old 10-19-2004
Thanks, I knew there was a way.

It is not really a function though, but as
the Perl CookBook says:

Quote:
This compact, map-sort-map technique is more reminiscent of the functional world of Lisp and Scheme programming than Perl's normal C and awk heritage. Because it was first pointed out by Randal Schwartz, this black art is often referred to as the Schwartzian Transform.
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