Solved

convert read data to variable

Posted on 2002-05-06
4
143 Views
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?

Thanks.
0
Comment
Question by:johnsm
[X]
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
4 Comments
 
LVL 84

Expert Comment

by:ozo
ID: 6992136
/(\w+)=(.*)/;
$$1 = $2;
0
 
LVL 1

Author Comment

by:johnsm
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?
<pre>

while ($data=<DATAFILE>) {
  /(\w+)=(.*)/;
  $$1 = $2;
}
</pre>

{sorry if the tags show up.}





0
 
LVL 84

Accepted Solution

by:
ozo earned 200 total points
ID: 6992236
while( $data=<DATAFILE> ){
    $data =~ /(\w+)=(.*)/;
    $$1 = $2;
}
0
 
LVL 1

Author Comment

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

0

Featured Post

[Live Webinar] The Cloud Skills Gap

As Cloud technologies come of age, business leaders grapple with the impact it has on their team's skills and the gap associated with the use of a cloud platform.

Join experts from 451 Research and Concerto Cloud Services on July 27th where we will examine fact and fiction.

Question has a verified solution.

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

I have been pestered over the years to produce and distribute regular data extracts, and often the request have explicitly requested the data be emailed as an Excel attachement; specifically Excel, as it appears: CSV files confuse (no Red or Green h…
A year or so back I was asked to have a play with MongoDB; within half an hour I had downloaded (http://www.mongodb.org/downloads),  installed and started the daemon, and had a console window open. After an hour or two of playing at the command …
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

617 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