NAME MooseX::MungeHas - munge your "has" (works with Moo, Moose and Mouse) SYNOPSIS package Foo::Bar; use Moose; use MooseX::MungeHas "is_ro"; has foo => (); # read-only has bar => (is => "rw"); # read-write DESCRIPTION MooseX::MungeHas alters the behaviour of the attributes of your Moo, Moose or Mouse based class. It manages to support all three because it doesn't attempt to do anything smart with metathingies; it simply installs a wrapper for `has` that munges the attribute specification hash before passing it on to the original `has` function. When you `use MooseX::MungeHas` you must provide a list of mungers you want it to apply. The following are currently pre-defined: `is_ro`, `is_rw`, `is_rwp`, `is_lazy` These mungers supply defaults for the `is` option. Although only Moo supports `is => "rwp"` and `is => "lazy"`, MooseX::MungeHas supplies an implementation of both for Moose or Mouse. `always_coerce` Automatically provides `coerce => 1` if the type constraint provides coercions. (Unless you've explicitly specified `coerce => 0`.) Although Moo expects coerce to be a coderef, MooseX::MungeHas supplies an implementation of `coerce => 0|1` for Type::Tiny type constraints. `eq_1` Makes `builder => 1`, `clearer => 1`, `predicate => 1`, and `trigger => 1` do what you mean. `no_isa` Switches off `isa` checks for attributes, unless they coerce. `simple_isa` Loosens type constraints if they don't coerce, and if it's likely to make them significantly faster. (Loosening `Int` to `Num` won't speed it up.) Only works if you're using Type::Tiny constraints. If these predefined mungers don't float your boat, then you can provide additional mungers using coderefs: use MooseX::MungeHas "no_isa", sub { # Make constructor ignore private attributes $_{init_arg} = undef if /^_/; }; Within coderefs, the name of the attribute being processed is available in the $_ variable, and the specification hash is available as %_. You may provide multiple coderefs. Mungers provided as coderefs are executed *after* named ones, but are otherwise executed in the order specified. BUGS Please report any bugs to . SEE ALSO Moo, Mouse, Moose, MooseX::AttributeShortcuts, MooseX::InlineTypes, Type::Tiny::Manual. Similar: MooseX::HasDefaults, MooseX::Attributes::Curried, MooseX::Attribute::Prototype and MooseX::AttributeDefaults. AUTHOR Toby Inkster . COPYRIGHT AND LICENCE This software is copyright (c) 2013 by Toby Inkster. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. DISCLAIMER OF WARRANTIES THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.