In recent Perl versions, the support for stat and file test operators such as -e (exists), -f (file), and -d (directory) has seen enhancements that improve their functionality and performance. These changes focus on providing better compatibility and more precise checks for the existence and types of files and directories.
The file test operators allow developers to easily check the status of files and directories without needing to manually handle error states or exceptions. This leads to cleaner code and more reliable applications.
Below is an example of using file test operators in Perl:
#!/usr/bin/perl
use strict;
use warnings;
my $file = "example.txt";
if (-e $file) {
print "$file exists.\n";
if (-f $file) {
print "$file is a file.\n";
} elsif (-d $file) {
print "$file is a directory.\n";
}
} else {
print "$file does not exist.\n";
}
How do I avoid rehashing overhead with std::set in multithreaded code?
How do I find elements with custom comparators with std::set for embedded targets?
How do I erase elements while iterating with std::set for embedded targets?
How do I provide stable iteration order with std::unordered_map for large datasets?
How do I reserve capacity ahead of time with std::unordered_map for large datasets?
How do I erase elements while iterating with std::unordered_map in multithreaded code?
How do I provide stable iteration order with std::map for embedded targets?
How do I provide stable iteration order with std::map in multithreaded code?
How do I avoid rehashing overhead with std::map in performance-sensitive code?
How do I merge two containers efficiently with std::map for embedded targets?