What is the best way to slurp a file into a string in Perl?

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How about this:

use File::Slurp;
my $text = read_file($filename);

ETA: note Bug #83126 for File-Slurp: Security hole with encoding(UTF-8). I now recommend using File::Slurper (disclaimer: I wrote it), also because it has better defaults around encodings:

use File::Slurper 'read_text';
my $text = read_text($filename);

or Path::Tiny:

use Path::Tiny;
path($filename)->slurp_utf8;

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