Beefy Boxes and Bandwidth Generously Provided by pair Networks
laziness, impatience, and hubris
 
PerlMonks  

print output from the text file.

by freekngeek (Acolyte)
on Jan 10, 2013 at 09:23 UTC ( #1012624=perlquestion: print w/replies, xml ) Need Help??
freekngeek has asked for the wisdom of the Perl Monks concerning the following question:

I have a text file in which I have some formulas and some conditions like this for many different cases. This text file is auto generated file so there is no standard input.

COND_RULE { L > 0 AND W > 0} EM_POLYNOMIAL { 0.3802 + (13.4739 * sqrt(W/0.9)) + (4.6272 * ( +W/0.9))
I want to print out the output of that polynomial through a perl script. I am a newbie to the world of perl. So, I just want to know some ideas and what perl topics should I go through with? Thanks :)

Replies are listed 'Best First'.
Re: print output from the text file.
by Anonymous Monk on Jan 10, 2013 at 09:26 UTC

    So, I just want to know some ideas and what perl topics should I go through with?

    The cpan? Yeah, the cpan :) math poly, math poly

      he is a newbie and so am i
      if you cant help then please dont reply
      and yes "google" would have been a better answer
      he have asked for the topics not modules
      tell him then only he will be able to search on cpan if required

        he is a newbie and so am i
        if you cant help then please dont reply

        How do you know I can't help?

Re: print output from the text file.
by blue_cowdawg (Monsignor) on Jan 10, 2013 at 15:07 UTC
        I want to print out the output of that polynomial through a perl script.

    Open an editor and try something and if it don't work then ask. Here's some pseudocode to push you along the way: <code>

    1. Open the file
    2. Iterate through the lines
      1. Remove EOL character
      2. Parse line into tokens
        1. Iterate through the tokens
          1. Enact action based on token, passing file handle and rest of input to action sub

    Each action would have it's own sub to enact the action and would be responsible for parsing input until it was satisfied it had enough.

    Give it a shot.


    Peter L. Berghold -- Unix Professional
    Peter -at- Berghold -dot- Net; AOL IM redcowdawg Yahoo IM: blue_cowdawg
Re: print output from the text file.
by Anonymous Monk on Jan 12, 2013 at 09:37 UTC

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: perlquestion [id://1012624]
Approved by Corion
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.