It's not over clear what you want to do, but my best guess is that you have a vector of data where you want to alter some of the values then print the resulting vector. A good way to do that is to transform your string representation of the data to an array, edit the data in the array, then write it back out as a string:

use strict;
use warnings;
use 5.010;

my $str = "0\t" x 10;
my @values = split '\s+', $str;

printf "First statement:\t%s\n", join "\t", @values;

@values[2, 3] = (0.5, 0.845);
printf "Second statement:\t%s\n", join "\t", @values;

[download]

Prints:

First statement:    0    0    0    0    0    0    0    0    0    0
Second statement:    0    0    0.5    0.845    0    0    0    0    0  
+  0

[download]
True laziness is hard work

In reply to Re: Substr Problem by GrandFather
in thread Substr Problem by snape

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