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In-place editing with perl -i is now safer; Initialisation of aggregate state variables; Full-size inode numbers; The sprintf %j format size modifier is now available with pre-C99 compilers; Close-on-exec flag set atomically; String- and number-specific bitwise ops are no longer experimental; Locales are now thread-safe on systems that support them
The Perl Object Environment (POE) is a library of Perl modules written in the Perl programming language by Rocco Caputo et al. . From CPAN: "POE originally was developed as the core of a persistent object server and runtime environment.
Software versioning is the process of assigning either unique version names or unique version numbers to unique states of computer software. Within a given version number category (e.g., major or minor), these numbers are generally assigned in increasing order and correspond to new developments in the software.
The documentation is bundled with Perl in its own format, known as Plain Old Documentation (pod). Some distributions, such as Strawberry Perl, include the documentation in HTML, PDF, and pod formats. perldoc is also the name of the Perl command that provides "access to all the documentation that comes with Perl", from the command line.
#!/usr/bin/perl – called the "shebang line", after the hash symbol (#) and ! (bang) at the beginning of the line. It is also known as the interpreter directive. # – the number sign, also called the hash symbol. In Perl, the # indicates the start of a comment. It instructs perl to ignore the rest of the line and not execute it as script code.
The shebang is actually a human-readable instance of a magic number in the executable file, the magic byte string being 0x23 0x21, the two-character encoding in ASCII of #!. This magic number is detected by the "exec" family of functions, which determine whether a file is a script or an executable binary. The presence of the shebang will result ...
A path (or filepath, file path, pathname, or similar) is a string of characters used to uniquely identify a location in a directory structure.It is composed by following the directory tree hierarchy in which components, separated by a delimiting character, represent each directory.
Learning Perl, also known as the llama book, [1] is a tutorial book for the Perl programming language, and is published by O'Reilly Media. The first edition (1993) was authored solely by Randal L. Schwartz , and covered Perl 4.