Reference · P5#

Reference for the p5 runtime (the default — a faithful Rust reimplementation of perl5 5.42). Two parts: the Perl language reference (variables, functions, operators, regex, data types, subroutines) and the Module reference for every built-in native module.

Perl language#

Modules#

Built-in modules, by top-level namespace. Badges show the feature tier and any extra Cargo features required — see Disclaimer & bug reports for how to check which features your pperl binary has.

  • B — Inspect a running Perl program’s own optree, symbol table, and compiled subs.

  • Clone — Make a deep, independent copy of any Perl value — hashes, arrays, scalars, references,

  • Config — Look up the build-time configuration of the running Perl interpreter.

  • Cwd — Report the current working directory and resolve paths to their

  • Data :: [ Dumper ]

  • Devel :: [ Peek ]

  • Digest :: [ MD5, SHA ]

  • Encode — Convert between Perl character strings and bytes in any named encoding —

  • Errno — Symbolic names for the errno(3) values your system uses — EINTR, EAGAIN,

  • Fcntl — Symbolic constants for fcntl(2), flock(2), seek(2), and file-mode

  • File :: [ Glob, Map, Temp ]

  • Filter :: [ Util ]

  • Hash :: [ Util ]

  • I18N :: [ Langinfo ]

  • IO — Load the core IO modules — IO::Handle, IO::File, IO::Seekable, IO::Pipe, IO::Socket, IO::Dir — in one use.

  • List :: [ Util ]

  • MIME :: [ Base64, QuotedPrint ]

  • Math :: [ GMP ]

  • PDL — use PDL boots Core, Ops, Ufunc, Math, Primitive, Slices, Basic
    :: [ Bad, Basic, Constants, Core, FFT, Lite, LiteF, Math, MatrixOps, Ops, Primitive, Slices, Types, Ufunc ]

  • POSIX — The POSIX (IEEE Std 1003.1) C standard library, exposed to Perl.

  • PadWalker — Reach into another subroutine’s my and our variables — read them,

  • PerlIO :: [ encoding, mmap, via ]

  • Peta :: [ FFI ]

  • SDBM_File — Tie a Perl hash to an on-disk SDBM database so keys and values persist between runs.

  • Scalar :: [ Util ]

  • Socket — BSD socket constants and address pack/unpack helpers that feed Perl’s

  • Storable — Serialise arbitrary Perl data structures to bytes, reconstruct them later, or deep-clone them in memory.

  • Sys :: [ Hostname ]

  • Term :: [ ReadLine ]

  • Time :: [ HiRes ]

  • attributes — The machinery behind `sub foo : lvalue method { …

  • mro — Method Resolution Order — how Perl decides which parent class’s method a call inherits.

  • re — The re pragma and regular-expression introspection module.

  • version — Turn a version string into an object you can compare, print, and introspect.