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Re: Uer Perl Variable in file

by Anonymous Monk
on Aug 06, 2012 at 14:24 UTC ( #985736=note: print w/ replies, xml ) Need Help??

in reply to Uer Perl Variable in txt file

I don't feel that I understand what you are getting, based on the snippet of source code that I see ... but here is one important thing to keep in mind: the difference between single and double quotes.

A string such as 'This is $name' will be output literally as it appears, whereas a string in double quotes such as "This is $name" will have the variable-name interpolated.   That is, if $name is Fred, you get:   This is Fred in the second case but not the first.

Comment on Re: Uer Perl Variable in file
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Re^2: Uer Perl Variable in file
by vinaybond (Novice) on Aug 06, 2012 at 14:40 UTC
    I have a file which has contents like this

    I am $name
    I am from $city
    I live $food
    I got $car

    Using perl code I am reading line one by one from file.txt. When I print line using $_ it does not replace variable in text file with variable values in .pl file but it prints the line as it is.
Re^2: Uer Perl Variable in file
by linuxkid (Sexton) on Aug 06, 2012 at 15:40 UTC

    Because this is external data, the interpreter will not interpolate variables


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