Beefy Boxes and Bandwidth Generously Provided by pair Networks
XP is just a number
 
PerlMonks  

Re: Substr Problem

by GrandFather (Sage)
on Sep 27, 2012 at 01:38 UTC ( #995901=note: print w/replies, xml ) Need Help??


in reply to Substr Problem

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;

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
True laziness is hard work

Replies are listed 'Best First'.
Re^2: Substr Problem
by snape (Pilgrim) on Sep 27, 2012 at 01:43 UTC

    Thanks a lot. The mistake I was doing was my thinking in the substr way ro solve my problem.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://995901]
help
Chatterbox?
[Discipulus]: Corion are you would able to realize such thing? O_O
[Corion]: In the same vein I have a script that automates Firefox to enter some data into another system. It's not faster than the people using the script if they were to do it manually, but they prefer not having to check the data and not having typos when ...
[Corion]: ... entering the data
[Corion]: Discipulus: I don't know whether I could really do that, but the init process itself mostly launches other processes, and the whole startup is just following a path of dependencies and making sure they are all running. Which basically is what ...
[Discipulus]: when at work my time is (temporarly) owned by the firm, so i do not care (coworkers whatch movies.. I code Perl)
[Corion]: ... make already does, except for files instead of programs. But maybe with some /proc hackery, that could be eliminated and one could use plain make :-D
[choroba]: systemd just makes is asynchronous
[choroba]: so, make -j
[Corion]: Discipulus: Yeah - but when writing Perl to save time (instead of having fun), it helps to look whether you're actually saving time ;) Why spend 5 minutes doing manually what you can spend three years automating? ;)
[Corion]: choroba: Oh, yeah :-D

How do I use this? | Other CB clients
Other Users?
Others rifling through the Monastery: (4)
As of 2017-07-27 09:30 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    I came, I saw, I ...
























    Results (408 votes). Check out past polls.