convert read data to variable

Posted on 2002-05-06
Last Modified: 2010-03-05
I have a text file called file1.txt. I want to be able to read in a line of that file (let's say the line is "score=2"). I now want to be able to use that as a variable and value in my current program.

In other words, I now want to have a variable called "$score" in my current program and have it's value set to "2" based on the data I read in from the text file.

I don't know what I will be reading in from the text file but I do know that it will always be [variable]=[value] so I can't predetermine the variable name because I don't know what it will be until I read it from the text file.

Is this possible? and if so how do I do it?

Question by:johnsm
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
LVL 84

Expert Comment

ID: 6992136
$$1 = $2;

Author Comment

ID: 6992146
What exactly does that do? I can't seem to use it properly, it just halts my execution with no errors.

How would it fit in here?

while ($data=<DATAFILE>) {
  $$1 = $2;

{sorry if the tags show up.}

LVL 84

Accepted Solution

ozo earned 200 total points
ID: 6992236
while( $data=<DATAFILE> ){
    $data =~ /(\w+)=(.*)/;
    $$1 = $2;

Author Comment

ID: 6992245
ah, I see. I'm not sure how or why it works, but it does, thanks.


Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

On Microsoft Windows, if  when you click or type the name of a .pl file, you get an error "is not recognized as an internal or external command, operable program or batch file", then this means you do not have the .pl file extension associated with …
In the distant past (last year) I hacked together a little toy that would allow a couple of Manager types to query, preview, and extract data from a number of MongoDB instances, to their tool of choice: Excel (…
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
Six Sigma Control Plans

729 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question