The libio-stringy-perl package (which corresponds to the cpan package io-stringy) provides the following perl modules:
io::atomicfile write a file which is updated atomically
io::lines i/o handle to read/write to array of lines
io::scalar i/o handle to read/write to a string
io::scalararray i/o handle to read/write to array of scalars
io::wrap wrap old-style fhs in standard oo interface
io::wraptie tie your handles & retain full oo interface