Papapep wrote:
>
> How should I do to split a long string that the only thing I know is
> that is a multiple of a previous defined number (for example 26).
>
> A graphic example:
>
>abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz
>
> That's four times 26 (104) but I don't (I can't) count every string
> because they are really long (They can be of thousands of charachters).
>
> So what I should do, I think, is a loop that get the first 26
> charachters and print them in a new file, after that evaluates if there
> is more string to get, and so on, but I am not able to see how it
> works... :-/
>
> Give me some advice, please (the command I should use, or group of
> commands, etc...)
Here are a couple of ways to do it:
my $length = 26;
my $string = 'abcdefghijklmnopqrstuvwxyz' x 4;
Split on arbitrary length using match operator:
for my $line ( $string =~ /.{1,$length}/sg ) {
# $line contains 1 to $length characters
}
Split on arbitrary length using substr (C style):
for ( my $index = 0; my $line = substr $string, $index, $length; $index += $length ) {
# $line contains 1 to $length characters
}
John
--
use Perl;
program
fulfillment
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