Hash::Objectify - Create objects from hashes on the fly

    version 0.008

      use Hash::Objectify;

      # turn a hash reference into an object with accessors

      $object = objectify { foo => 'bar', wibble => 'wobble' };
      print $object->foo;

      # objectify with a specific class name

      $object = objectify { foo => 'bar' }, "Foo::Response";
      print ref $object; # "Foo::Response"

    Hash::Objectify turns a hash reference into a simple object with
    accessors for each of the keys.

    One application of this module could be to create lightweight response
    objects without the extra work of setting up an entire response class
    with the framework of your choice.

    Using Hash::Objectify is slower than accessing the keys of the hash
    directly, but does provide "typo protection" since a misspelled method
    is an error.

    By default, the "objectify" function is automatically exported.

      $object = objectify $hashref
      $object = objectify $hashref, $classname;

      $object->$key;          # accessor
      $object->$key($value);  # mutator

    The "objectify" function copies the hash reference (shallow copy), and
    blesses it into the given classname. If no classname is given, a
    meaningless, generated package name is used instead. In either case, the
    object will inherit from the Hash::Objectified class, which generates
    accessors on demand for any key in the hash.

    As an optimization, a generated classname will be the same for any given
    "objectify" call if the keys of the input are the same. (This avoids
    excessive accessor generation.)

    The first time a method is called on the object, an accessor will be
    dynamically generated if the key exists. If the key does not exist, an
    exception is thrown. Note: deleting a key *after* calling it as an
    accessor will not cause subsequent calls to throw an exception; the
    accessor will merely return undef.

    Objectifying with a "real" classname that does anything other than
    inherit from Hash::Objectified may lead to surprising behaviors from
    method name conflict. You probably don't want to do that.

    Objectifying anything other than an unblessed hash reference is an
    error. This is true even for objects based on blessed hash references,
    since the correct semantics are not universally obvious. If you really
    want Hash::Objectify for access to the keys of a blessed hash, you
    should make an explicit, shallow copy:

      my $copy = objectify {%$object};

      $object = objectify_lax { foo => 'bar' };
      $object->quux; # not fatal

    This works just like "objectify", except that non-existing keys return
    "undef" instead of throwing exceptions. Non-existing keys will still
    return "undef" if checked with "can".

    WARNING: having an object that doesn't throw on unknown methods violates
    object-oriented behavior expectations so is generally a bad idea. If you
    really feel you need this, be aware that the safety guard is removed and
    you might lose a finger.

    If called with an existing non-lax objectified package name, the
    behavior of accessors not yet called with change to become lax. You
    probably don't want to do that.

    If an objectified hashref contains keys that conflict with existing
    resolvable methods (e.g. "can", "AUTOLOAD", "DESTROY"), you won't be
    able to access those keys via a method as the existing methods take

    Specifying custom package names or manipulating @ISA for objectified
    packages (including subclassing) is likely to lead to surprising
    behavior. It is not recommended and is not supported. If it breaks, you
    get to keep the pieces.

  Bugs / Feature Requests
    Please report any bugs or feature requests through the issue tracker at
    <>. You will be
    notified automatically of any progress on your issue.

  Source Code
    This is open source software. The code repository is available for
    public review and contribution under the terms of the license.


      git clone

    David Golden <>

    This software is Copyright (c) 2012 by David Golden.

    This is free software, licensed under:

      The Apache License, Version 2.0, January 2004