PerlIO

Namespace containing the following modules:

• PerlIO::encoding — Open a filehandle with a transparent character-set encoding filter.

• PerlIO::mmap — Memory-mapped IO layer opened as <:mmap, with a read()/write() fallback when mmap fails.

• PerlIO::via — Write a PerlIO layer in Perl: open with :via(MyClass) and I/O dispatches to your class.