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This article is about how to use Perl to read all the contents of a file at one time. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Use Perl to read all the contents of the file at one time

The method of using perl to read files one line at a time is clear to everyone, and you can use the

$line=; # read in one line

Or

@ lines=; # reads each line into an array.

You can do an one-time read by redefining the delimiter $/:

Open FILE, "1.txt" or die $!; {local $/ = undef; # / / local is used so that when the delimiter is used at other times, there will be no error $content=; close FILE;}

The delimiter $/ defaults to carriage return, and here we change it to undefined undef

You can further simplify the code:

$content = do {local $/ = undef;;}; Thank you for reading! On "how to use Perl to read all the contents of the file at one time" this article is shared here, I hope the above content can be of some help to you, so that you can learn more knowledge, if you think the article is good, you can share it out for more people to see it!

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