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600f7f85 |
1 | =pod |
2 | |
3 | =head1 NAME |
4 | |
5 | Moose::Manual::Delta - Important Changes in Moose |
6 | |
7 | =head1 DESCRIPTION |
8 | |
0f13f53c |
9 | This documents any important or noteworthy changes in Moose, with a |
10 | focus on backwards. This does duplicate data from the F<Changes> file, |
11 | but aims to provide more details and when possible workarounds. |
12 | |
13 | Besides helping keep up with changes, you can also use this document |
14 | for finding the lowest version of Moose that supported a given |
15 | feature. If you encounter a problem and have a solution but don't see |
16 | it documented here, or think we missed an important feature, please |
17 | send us a patch. |
600f7f85 |
18 | |
d6ce97b9 |
19 | =head1 NEXT |
20 | |
21 | =over 4 |
22 | |
23 | =item Native Traits |
24 | |
25 | In previous versions of Moose, the Native delegations were created as |
26 | closures. The generated code was often quite slow compared to doing the same |
27 | thing by hand. For example, the Array's push delegation ended up doing |
28 | something like this: |
29 | |
30 | push @{ $self->$reader() }, @_; |
31 | |
32 | If the attribute was created without a reader, the C<$reader> sub reference |
33 | followed a very slow code path. Even with a reader, this is still slower than |
34 | it needs to be. |
35 | |
36 | Native delegations are now generated as inline code, just like other |
37 | accessors, so we can access the slot directly. |
38 | |
39 | In addition, native traits now do proper constraint checking in all cases. In |
40 | particular, constraint checking has been improved for array and hash |
41 | references. Previously, only the I<contained> type (the C<Str> in |
42 | C<HashRef[Str]>) would be checked when a new value was added to the |
43 | collection. However, if there was a constraint that applied to the whole |
44 | value, this was never checked. |
45 | |
46 | In addition, coercions are now called on the whole value. |
47 | |
27719606 |
48 | The delegation methods now do more argument checking. All of the methods check |
49 | that a valid number of arguments were passed to the method. In addition, the |
50 | delegation methods check that the arguments are sane (array indexes, hash |
51 | keys, numbers, etc.) when applicable. We have tried to emulate the behavior of |
52 | Perl builtins as much as possible. |
53 | |
d6ce97b9 |
54 | Finally, triggers are called whenever the value of the attribute is changed by |
55 | a Native delegation. |
56 | |
c99ddeb7 |
57 | These changes are only likely to break code in a few cases. |
58 | |
ca8d6244 |
59 | The inlining code may or may not preserve the original reference when changes |
c99ddeb7 |
60 | are made. In some cases, methods which change the value may replace it |
61 | entirely. This will break tied values. |
62 | |
63 | If you have a typed arrayref or hashref attribute where the type enforces a |
64 | constraint on the whole collection, this constraint will now be checked. It's |
65 | possible that code which previously ran without errors will now cause the |
66 | constraint to fail. However, presumably this is a good thing ;) |
d6ce97b9 |
67 | |
27719606 |
68 | If you are passing invalid arguments to a delegation which were previously |
ca8d6244 |
69 | being ignored, these calls will now fail. |
27719606 |
70 | |
c99ddeb7 |
71 | If your code relied on the trigger only being called for a regular writer, |
72 | that may cause problems. |
d6ce97b9 |
73 | |
74 | As always, you are encouraged to test before deploying the latest version of |
75 | Moose to production. |
76 | |
c787d26e |
77 | =item Defaults is and default for String, Counter, and Bool |
78 | |
d21ebae8 |
79 | A few native traits (String, Counter, Bool) provide default values of "is" and |
c787d26e |
80 | "default" when you created an attribute. Allowing them to provide these values |
81 | is now deprecated. Supply the value yourself when creating the attribute. |
82 | |
a2084f68 |
83 | =item The C<meta> method |
84 | |
85 | Moose and Class::MOP have been cleaned up internally enough to make the |
86 | C<meta> method that you get by default optional. C<use Moose> and |
87 | C<use Moose::Role> now can take an additional C<-meta_name> option, which |
88 | tells Moose what name to use when installing the C<meta> method. Passing |
89 | C<undef> to this option suppresses generation of the C<meta> method |
90 | entirely. This should be useful for users of modules which also use a C<meta> |
91 | method or function, such as L<Curses> or L<Rose::DB::Object>. |
92 | |
d6ce97b9 |
93 | =back |
94 | |
aee0741b |
95 | =head1 1.09 |
96 | |
7dacb294 |
97 | =over 4 |
98 | |
4c7d1018 |
99 | =item All deprecated features now warn |
100 | |
101 | Previously, deprecation mostly consisted of simply saying "X is deprecated" in |
102 | the Changes file. We were not very consistent about actually warning. Now, all |
103 | deprecated features still present in Moose actually give a warning. The |
104 | warning is issued once per calling package. See L<Moose::Deprecated> for more |
105 | details. |
106 | |
2b54d2a6 |
107 | =item You cannot pass C<< coerce => 1 >> unless the attribute's type constraint has a coercion |
108 | |
109 | Previously, this was accepted, and it sort of worked, except that if you |
110 | attempted to set the attribute after the object was created, you would get a |
111 | runtime error. |
112 | |
aa6da652 |
113 | Now you will get a warning when you attempt to define the attribute. |
2b54d2a6 |
114 | |
aee0741b |
115 | =item C<no Moose>, C<no Moose::Role>, and C<no Moose::Exporter> no longer unimport strict and warnings |
116 | |
117 | This change was made in 1.05, and has now been reverted. We don't know if the |
dee8c866 |
118 | user has explicitly loaded strict or warnings on their own, and unimporting |
119 | them is just broken in that case. |
aee0741b |
120 | |
59caebc4 |
121 | =item Reversed logic when defining which options can be changed |
7782e1da |
122 | |
da7efd4c |
123 | L<Moose::Meta::Attribute> now allows all options to be changed in an |
124 | overridden attribute. The previous behaviour required each option to be |
125 | whitelisted using the C<legal_options_for_inheritance> method. This method has |
126 | been removed, and there is a new method, C<illegal_options_for_inheritance>, |
127 | which can now be used to prevent certain options from being changeable. |
7782e1da |
128 | |
da7efd4c |
129 | In addition, we only throw an error if the illegal option is actually |
130 | changed. If the superclass didn't specify this option at all when defining the |
131 | attribute, the subclass version can still add it as an option. |
dede9732 |
132 | |
133 | Example of overriding this in an attribute trait: |
7782e1da |
134 | |
dede9732 |
135 | package Bar::Meta::Attribute; |
136 | use Moose::Role; |
7782e1da |
137 | |
138 | has 'my_illegal_option' => ( |
da7efd4c |
139 | isa => 'CodeRef', |
140 | is => 'rw', |
7782e1da |
141 | ); |
142 | |
143 | around illegal_options_for_inheritance => sub { |
da7efd4c |
144 | return ( shift->(@_), qw/my_illegal_option/ ); |
7782e1da |
145 | }; |
146 | |
7dacb294 |
147 | =back |
148 | |
e462f6f3 |
149 | =head1 1.05 |
150 | |
a19ae3d7 |
151 | =over 4 |
152 | |
153 | =item L<Moose::Object/BUILD> methods are now called when calling C<new_object> |
154 | |
155 | Previously, C<BUILD> methods would only be called from C<Moose::Object::new>, |
156 | but now they are also called when constructing an object via |
157 | C<Moose::Meta::Class::new_object>. C<BUILD> methods are an inherent part of the |
158 | object construction process, and this should make C<< $meta->new_object >> |
159 | actually usable without forcing people to use C<< $meta->name->new >>. |
160 | |
2fee26f1 |
161 | =item C<no Moose>, C<no Moose::Role>, and C<no Moose::Exporter> now unimport strict and warnings |
162 | |
163 | In the interest of having C<no Moose> clean up everything that C<use Moose> |
164 | does in the calling scope, C<no Moose> (as well as all other |
165 | L<Moose::Exporter>-using modules) now unimports strict and warnings. |
166 | |
f46a74bf |
167 | =item Metaclass compatibility checking and fixing should be much more robust |
168 | |
169 | The L<metaclass compatibility|Moose/METACLASS COMPATIBILITY AND MOOSE> checking |
170 | and fixing algorithms have been completely rewritten, in both Class::MOP and |
171 | Moose. This should resolve many confusing errors when dealing with non-Moose |
172 | inheritance and with custom metaclasses for things like attributes, |
918b5cef |
173 | constructors, etc. For correct code, the only thing that should require a |
174 | change is that custom error metaclasses must now inherit from |
175 | L<Moose::Error::Default>. |
f46a74bf |
176 | |
a19ae3d7 |
177 | =back |
178 | |
8ff79890 |
179 | =head1 1.02 |
180 | |
181 | =over 4 |
182 | |
183 | =item Moose::Meta::TypeConstraint::Class is_subtype_of behavior |
184 | |
185 | Earlier versions of L<is_subtype_of|Moose::Meta::TypeConstraint::Class/is_subtype_of> |
186 | would incorrectly return true when called with itself, its own TC name or |
187 | its class name as an argument. (i.e. $foo_tc->is_subtype_of('Foo') == 1) This |
188 | behavior was a caused by C<isa> being checked before the class name. The old |
189 | behavior can be accessed with L<is_type_of|Moose::Meta::TypeConstraint::Class/is_type_of> |
190 | |
191 | =back |
192 | |
12885414 |
193 | =head1 1.00 |
194 | |
195 | =over 4 |
196 | |
197 | =item Moose::Meta::Attribute::Native::Trait::Code no longer creates reader methods by default |
198 | |
199 | Earlier versions of L<Moose::Meta::Attribute::Native::Trait::Code> created |
200 | read-only accessors for the attributes it's been applied to, even if you didn't |
201 | ask for it with C<< is => 'ro' >>. This incorrect behaviour has now been fixed. |
202 | |
203 | =back |
204 | |
775666aa |
205 | =head1 0.95 |
206 | |
207 | =over 4 |
208 | |
209 | =item Moose::Util add_method_modifier behavior |
210 | |
211 | add_method_modifier (and subsequently the sugar functions Moose::before, |
212 | Moose::after, and Moose::around) can now accept arrayrefs, with the same |
213 | behavior as lists. Types other than arrayref and regexp result in an error. |
214 | |
215 | =back |
216 | |
5b7b27e2 |
217 | =head1 0.93_01 and 0.94 |
218 | |
219 | =over 4 |
220 | |
f785aad8 |
221 | =item Moose::Util::MetaRole API has changed |
222 | |
223 | The C<apply_metaclass_roles> function is now called C<apply_metaroles>. The |
224 | way arguments are supplied has been changed to force you to distinguish |
225 | between metaroles applied to L<Moose::Meta::Class> (and helpers) versus |
226 | L<Moose::Meta::Role>. |
227 | |
228 | The old API still works, but will warn in a future release, and eventually be |
229 | removed. |
230 | |
231 | =item Moose::Meta::Role has real attributes |
232 | |
233 | The attributes returned by L<Moose::Meta::Role> are now instances of the |
234 | L<Moose::Meta::Role::Attribute> class, instead of bare hash references. |
235 | |
5b7b27e2 |
236 | =item "no Moose" now removes C<blessed> and C<confess> |
237 | |
238 | Moose is now smart enough to know exactly what it exported, even when it |
239 | re-exports functions from other packages. When you unimport Moose, it will |
240 | remove these functions from your namespace unless you I<also> imported them |
241 | directly from their respective packages. |
242 | |
243 | If you have a C<no Moose> in your code I<before> you call C<blessed> or |
244 | C<confess>, your code will break. You can either move the C<no Moose> call |
245 | later in your code, or explicitly import the relevant functions from the |
246 | packages that provide them. |
247 | |
248 | =item L<Moose::Exporter> is smarter about unimporting re-exports |
249 | |
250 | The change above comes from a general improvement to L<Moose::Exporter>. It |
251 | will now unimport any function it exports, even if that function is a |
252 | re-export from another package. |
253 | |
f427b505 |
254 | =item Attributes in roles can no longer override class attributes with "+foo" |
255 | |
256 | Previously, this worked more or less accidentally, because role attributes |
257 | weren't objects. This was never documented, but a few MooseX modules took |
258 | advantage of this. |
259 | |
260 | =item The composition_class_roles attribute in L<Moose::Meta::Role> is now a method |
261 | |
262 | This was done to make it possible for roles to alter the the list of |
263 | composition class roles by applying a method modifiers. Previously, this was |
264 | an attribute and MooseX modules override it. Since that no longer works, this |
265 | was made a method. |
266 | |
267 | This I<should> be an attribute, so this may switch back to being an attribute |
268 | in the future if we can figure out how to make this work. |
269 | |
5b7b27e2 |
270 | =back |
271 | |
c378a61a |
272 | =head1 0.93 |
273 | |
274 | =over 4 |
275 | |
276 | =item Calling $object->new() is no longer deprecated |
277 | |
76c89056 |
278 | We decided to undeprecate this. Now it just works. |
c378a61a |
279 | |
d99ec58b |
280 | =item Both C<get_method_map> and C<get_attribute_map> is deprecated |
fa6da135 |
281 | |
d99ec58b |
282 | These metaclass methods were never meant to be public, and they are both now |
283 | deprecated. The work around if you still need the functionality they provided |
284 | is to iterate over the list of names manually. |
fa6da135 |
285 | |
286 | my %fields = map { $_ => $meta->get_attribute($_) } $meta->get_attribute_list; |
287 | |
d99ec58b |
288 | This was actually a change in L<Class::MOP>, but this version of Moose |
289 | requires a version of L<Class::MOP> that includes said change. |
290 | |
c378a61a |
291 | =back |
292 | |
b98ef150 |
293 | =head1 0.90 |
871f82f8 |
294 | |
c985327a |
295 | =over 4 |
296 | |
93ef4ba1 |
297 | =item Added Native delegation for Code refs |
298 | |
299 | See L<Moose::Meta::Attribute::Native::Trait::Code> for details. |
300 | |
3f5ff7d0 |
301 | =item Calling $object->new() is deprecated |
302 | |
303 | Moose has long supported this, but it's never really been documented, and we |
304 | don't think this is a good practice. If you want to construct an object from |
305 | an existing object, you should provide some sort of alternate constructor like |
306 | C<< $object->clone >>. |
307 | |
308 | Calling C<< $object->new >> now issues a warning, and will be an error in a |
309 | future release. |
310 | |
19e60fdd |
311 | =item Moose no longer warns if you call C<make_immutable> for a class with mutable ancestors |
312 | |
313 | While in theory this is a good thing to warn about, we found so many |
314 | exceptions to this that doing this properly became quite problematic. |
315 | |
93ef4ba1 |
316 | =back |
317 | |
def57e8d |
318 | =head1 0.89_02 |
93ef4ba1 |
319 | |
320 | =over 4 |
4f0d4488 |
321 | |
871f82f8 |
322 | =item New Native delegation methods from L<List::Util> and L<List::MoreUtils> |
323 | |
324 | In particular, we now have C<reduce>, C<shuffle>, C<uniq>, and C<natatime>. |
325 | |
3023f1e4 |
326 | =item The Moose::Exporter with_caller feature is now deprecated |
327 | |
328 | Use C<with_meta> instead. The C<with_caller> option will start warning in a |
329 | future release. |
330 | |
9b9a5a07 |
331 | =item Moose now warns if you call C<make_immutable> for a class with mutable ancestors |
332 | |
333 | This is dangerous because modifying a class after a subclass has been |
90b20bd6 |
334 | immutabilized will lead to incorrect results in the subclass, due to inlining, |
9b9a5a07 |
335 | caching, etc. This occasionally happens accidentally, when a class loads one |
336 | of its subclasses in the middle of its class definition, so pointing out that |
337 | this may cause issues should be helpful. Metaclasses (classes that inherit |
338 | from L<Class::MOP::Object>) are currently exempt from this check, since at the |
90b20bd6 |
339 | moment we aren't very consistent about which metaclasses we immutabilize. |
9b9a5a07 |
340 | |
bce5d4a5 |
341 | =item C<enum> and C<duck_type> now take arrayrefs for all forms |
342 | |
343 | Previously, calling these functions with a list would take the first element of |
344 | the list as the type constraint name, and use the remainder as the enum values |
345 | or method names. This makes the interface inconsistent with the anon-type forms |
346 | of these functions (which must take an arrayref), and a free-form list where |
347 | the first value is sometimes special is hard to validate (and harder to give |
348 | reasonable error messages for). These functions have been changed to take |
349 | arrayrefs in all their forms - so, C<< enum 'My::Type' => [qw(foo bar)] >> is |
350 | now the preferred way to create an enum type constraint. The old syntax still |
351 | works for now, but it will hopefully be deprecated and removed in a future |
352 | release. |
353 | |
871f82f8 |
354 | =back |
355 | |
def57e8d |
356 | =head1 0.89_01 |
a3d98218 |
357 | |
af44c00c |
358 | L<Moose::Meta::Attribute::Native> has been moved into the Moose core from |
a3d98218 |
359 | L<MooseX::AttributeHelpers>. Major changes include: |
360 | |
ebaaa391 |
361 | =over 4 |
a3d98218 |
362 | |
363 | =item C<traits>, not C<metaclass> |
364 | |
93ced2bd |
365 | Method providers are only available via traits. |
a3d98218 |
366 | |
367 | =item C<handles>, not C<provides> or C<curries> |
368 | |
93ced2bd |
369 | The C<provides> syntax was like core Moose C<< handles => HASHREF >> |
370 | syntax, but with the keys and values reversed. This was confusing, |
371 | and AttributeHelpers now uses C<< handles => HASHREF >> in a way that |
372 | should be intuitive to anyone already familiar with how it is used for |
373 | other attributes. |
a3d98218 |
374 | |
93ced2bd |
375 | The C<curries> functionality provided by AttributeHelpers has been |
376 | generalized to apply to all cases of C<< handles => HASHREF >>, though |
377 | not every piece of functionality has been ported (currying with a |
378 | CODEREF is not supported). |
a3d98218 |
379 | |
1853a27e |
380 | =item C<empty> is now C<is_empty>, and means empty, not non-empty |
af44c00c |
381 | |
382 | Previously, the C<empty> method provided by Arrays and Hashes returned true if |
383 | the attribute was B<not> empty (no elements). Now it returns true if the |
1853a27e |
384 | attribute B<is> empty. It was also renamed to C<is_empty>, to reflect this. |
af44c00c |
385 | |
9a14bd29 |
386 | =item C<find> was renamed to C<first>, and C<first> and C<last> were removed |
28b96142 |
387 | |
388 | L<List::Util> refers to the functionality that we used to provide under C<find> |
389 | as L<first|List::Util/first>, so that will likely be more familiar (and will |
9a14bd29 |
390 | fit in better if we decide to add more List::Util functions). C<first> and |
391 | C<last> were removed, since their functionality is easily duplicated with |
392 | curries of C<get>. |
28b96142 |
393 | |
394 | =item Helpers that take a coderef of one argument now use C<$_> |
395 | |
396 | Subroutines passed as the first argument to C<first>, C<map>, and C<grep> now |
397 | receive their argument in C<$_> rather than as a parameter to the subroutine. |
398 | Helpers that take a coderef of two or more arguments remain using the argument |
399 | list (there are technical limitations to using C<$a> and C<$b> like C<sort> |
400 | does). |
401 | |
af44c00c |
402 | See L<Moose::Meta::Attribute::Native> for the new documentation. |
a3d98218 |
403 | |
ebaaa391 |
404 | =back |
405 | |
85e2b15a |
406 | The C<alias> and C<excludes> role parameters have been renamed to C<-alias> |
407 | and C<-excludes>. The old names still work, but new code should use the new |
408 | names, and eventually the old ones will be deprecated and removed. |
409 | |
def57e8d |
410 | =head1 0.89 |
4ada9618 |
411 | |
8a8856de |
412 | C<< use Moose -metaclass => 'Foo' >> now does alias resolution, just like |
413 | C<-traits> (and the C<metaclass> and C<traits> options to C<has>). |
414 | |
27f2f43f |
415 | Added two functions C<meta_class_alias> and C<meta_attribute_alias> to |
416 | L<Moose::Util>, to simplify aliasing metaclasses and metatraits. This is |
417 | a wrapper around the old |
418 | |
419 | package Moose::Meta::Class::Custom::Trait::FooTrait; |
420 | sub register_implementation { 'My::Meta::Trait' } |
421 | |
422 | way of doing this. |
423 | |
def57e8d |
424 | =head1 0.84 |
4831e2de |
425 | |
9f52cce5 |
426 | When an attribute generates I<no> accessors, we now warn. This is to help |
427 | users who forget the C<is> option. If you really do not want any accessors, |
3de02fd8 |
428 | you can use C<< is => 'bare' >>. You can maintain back compat with older |
429 | versions of Moose by using something like: |
430 | |
431 | ($Moose::VERSION >= 0.84 ? is => 'bare' : ()) |
9f52cce5 |
432 | |
433 | When an accessor overwrites an existing method, we now warn. To work around |
434 | this warning (if you really must have this behavior), you can explicitly |
435 | remove the method before creating it as an accessor: |
436 | |
437 | sub foo {} |
438 | |
439 | __PACKAGE__->meta->remove_method('foo'); |
440 | |
441 | has foo => ( |
442 | is => 'ro', |
443 | ); |
444 | |
445 | When an unknown option is passed to C<has>, we now warn. You can silence |
446 | the warning by fixing your code. :) |
447 | |
4831e2de |
448 | The C<Role> type has been deprecated. On its own, it was useless, |
449 | since it just checked C<< $object->can('does') >>. If you were using |
450 | it as a parent type, just call C<role_type('Role::Name')> to create an |
451 | appropriate type instead. |
452 | |
def57e8d |
453 | =head1 0.78 |
7d6b451f |
454 | |
455 | C<use Moose::Exporter;> now imports C<strict> and C<warnings> into packages |
456 | that use it. |
457 | |
def57e8d |
458 | =head1 0.77 |
c3fdacda |
459 | |
460 | C<DEMOLISHALL> and C<DEMOLISH> now receive an argument indicating whether or |
461 | not we are in global destruction. |
462 | |
def57e8d |
463 | =head1 0.76 |
00c61603 |
464 | |
9f0b3b64 |
465 | Type constraints no longer run coercions for a value that already matches the |
466 | constraint. This may affect some (arguably buggy) edge case coercions that |
467 | rely on side effects in the C<via> clause. |
468 | |
def57e8d |
469 | =head1 0.75 |
f869fc4a |
470 | |
471 | L<Moose::Exporter> now accepts the C<-metaclass> option for easily |
472 | overriding the metaclass (without L<metaclass>). This works for classes |
473 | and roles. |
474 | |
def57e8d |
475 | =head1 0.74 |
39ab7714 |
476 | |
85cf0647 |
477 | Added a C<duck_type> sugar function to L<Moose::Util::TypeConstraints> |
478 | to make integration with non-Moose classes easier. It simply checks if |
479 | C<< $obj->can() >> a list of methods. |
39ab7714 |
480 | |
612fd754 |
481 | A number of methods (mostly inherited from L<Class::MOP>) have been |
482 | renamed with a leading underscore to indicate their internal-ness. The |
483 | old method names will still work for a while, but will warn that the |
484 | method has been renamed. In a few cases, the method will be removed |
485 | entirely in the future. This may affect MooseX authors who were using |
486 | these methods. |
487 | |
def57e8d |
488 | =head1 0.73 |
600f7f85 |
489 | |
0f13f53c |
490 | Calling C<subtype> with a name as the only argument now throws an |
600f7f85 |
491 | exception. If you want an anonymous subtype do: |
492 | |
493 | my $subtype = subtype as 'Foo'; |
494 | |
0f13f53c |
495 | This is related to the changes in version 0.71_01. |
600f7f85 |
496 | |
501db4e6 |
497 | The C<is_needed> method in L<Moose::Meta::Method::Destructor> is now |
498 | only usable as a class method. Previously, it worked as a class or |
499 | object method, with a different internal implementation for each |
500 | version. |
501 | |
502 | The internals of making a class immutable changed a lot in Class::MOP |
503 | 0.78_02, and Moose's internals have changed along with it. The |
504 | external C<< $metaclass->make_immutable >> method still works the same |
505 | way. |
506 | |
def57e8d |
507 | =head1 0.72 |
600f7f85 |
508 | |
0f13f53c |
509 | A mutable class accepted C<< Foo->new(undef) >> without complaint, |
510 | while an immutable class would blow up with an unhelpful error. Now, |
511 | in both cases we throw a helpful error instead. |
600f7f85 |
512 | |
0f13f53c |
513 | This "feature" was originally added to allow for cases such as this: |
600f7f85 |
514 | |
515 | my $args; |
0f13f53c |
516 | |
517 | if ( something() ) { |
518 | $args = {...}; |
600f7f85 |
519 | } |
0f13f53c |
520 | |
600f7f85 |
521 | return My::Class->new($args); |
522 | |
0f13f53c |
523 | But we decided this is a bad idea and a little too magical, because it |
524 | can easily mask real errors. |
600f7f85 |
525 | |
def57e8d |
526 | =head1 0.71_01 |
600f7f85 |
527 | |
0f13f53c |
528 | Calling C<type> or C<subtype> without the sugar helpers (C<as>, |
529 | C<where>, C<message>) is now deprecated. |
530 | |
531 | As a side effect, this meant we ended up using Perl prototypes on |
532 | C<as>, and code like this will no longer work: |
600f7f85 |
533 | |
534 | use Moose::Util::TypeConstraints; |
535 | use Declare::Constraints::Simple -All; |
0f13f53c |
536 | |
537 | subtype 'ArrayOfInts' |
600f7f85 |
538 | => as 'ArrayRef' |
539 | => IsArrayRef(IsInt); |
540 | |
541 | Instead it must be changed to this: |
542 | |
0f13f53c |
543 | subtype( |
544 | 'ArrayOfInts' => { |
545 | as => 'ArrayRef', |
546 | where => IsArrayRef(IsInt) |
547 | } |
600f7f85 |
548 | ); |
549 | |
0f13f53c |
550 | If you want to maintain backwards compat with older versions of Moose, |
551 | you must explicitly test Moose's C<VERSION>: |
600f7f85 |
552 | |
0f13f53c |
553 | if ( Moose->VERSION < 0.71_01 ) { |
554 | subtype 'ArrayOfInts' |
600f7f85 |
555 | => as 'ArrayRef' |
556 | => IsArrayRef(IsInt); |
557 | } |
558 | else { |
0f13f53c |
559 | subtype( |
560 | 'ArrayOfInts' => { |
561 | as => 'ArrayRef', |
562 | where => IsArrayRef(IsInt) |
563 | } |
600f7f85 |
564 | ); |
565 | } |
566 | |
def57e8d |
567 | =head1 0.70 |
600f7f85 |
568 | |
0f13f53c |
569 | We no longer pass the meta-attribute object as a final argument to |
570 | triggers. This actually changed for inlined code a while back, but the |
571 | non-inlined version and the docs were still out of date. |
572 | |
573 | If by some chance you actually used this feature, the workaround is |
574 | simple. You fetch the attribute object from out of the C<$self> |
575 | that is passed as the first argument to trigger, like so: |
576 | |
577 | has 'foo' => ( |
578 | is => 'ro', |
579 | isa => 'Any', |
580 | trigger => sub { |
581 | my ( $self, $value ) = @_; |
582 | my $attr = $self->meta->find_attribute_by_name('foo'); |
583 | |
584 | # ... |
585 | } |
586 | ); |
600f7f85 |
587 | |
def57e8d |
588 | =head1 0.66 |
600f7f85 |
589 | |
0f13f53c |
590 | If you created a subtype and passed a parent that Moose didn't know |
591 | about, it simply ignored the parent. Now it automatically creates the |
592 | parent as a class type. This may not be what you want, but is less |
593 | broken than before. |
600f7f85 |
594 | |
0f13f53c |
595 | You could declare a name with subtype such as "Foo!Bar". Moose would |
596 | accept this allowed, but if you used it in a parameterized type such |
597 | as "ArrayRef[Foo!Bar]" it wouldn't work. We now do some vetting on |
598 | names created via the sugar functions, so that they can only contain |
599 | alphanumerics, ":", and ".". |
600f7f85 |
600 | |
def57e8d |
601 | =head1 0.65 |
600f7f85 |
602 | |
603 | Methods created via an attribute can now fulfill a C<requires> |
0f13f53c |
604 | declaration for a role. Honestly we don't know why Stevan didn't make |
605 | this work originally, he was just insane or something. |
600f7f85 |
606 | |
0f13f53c |
607 | Stack traces from inlined code will now report the line and file as |
608 | being in your class, as opposed to in Moose guts. |
600f7f85 |
609 | |
def57e8d |
610 | =head1 0.62_02 |
600f7f85 |
611 | |
0f13f53c |
612 | When a class does not provide all of a role's required methods, the |
613 | error thrown now mentions all of the missing methods, as opposed to |
614 | just the first missing method. |
600f7f85 |
615 | |
0f13f53c |
616 | Moose will no longer inline a constructor for your class unless it |
5e26e3f2 |
617 | inherits its constructor from Moose::Object, and will warn when it |
618 | doesn't inline. If you want to force inlining anyway, pass |
b84f64da |
619 | C<< replace_constructor => 1 >> to C<make_immutable>. |
0f13f53c |
620 | |
621 | If you want to get rid of the warning, pass C<< inline_constructor => |
fbf7ba85 |
622 | 0 >>. |
600f7f85 |
623 | |
def57e8d |
624 | =head1 0.62 |
600f7f85 |
625 | |
0f13f53c |
626 | Removed the (deprecated) C<make_immutable> keyword. |
600f7f85 |
627 | |
628 | Removing an attribute from a class now also removes delegation |
0f13f53c |
629 | (C<handles>) methods installed for that attribute. This is correct |
600f7f85 |
630 | behavior, but if you were wrongly relying on it you might get bit. |
631 | |
def57e8d |
632 | =head1 0.58 |
600f7f85 |
633 | |
0f13f53c |
634 | Roles now add methods by calling C<add_method>, not |
635 | C<alias_method>. They make sure to always provide a method object, |
636 | which will be cloned internally. This means that it is now possible to |
637 | track the source of a method provided by a role, and even follow its |
638 | history through intermediate roles. This means that methods added by |
639 | a role now show up when looking at a class's method list/map. |
640 | |
641 | Parameter and Union args are now sorted, this makes Int|Str the same |
642 | constraint as Str|Int. Also, incoming type constraint strings are |
643 | normalized to remove all whitespace differences. This is mostly for |
644 | internals and should not affect outside code. |
645 | |
646 | L<Moose::Exporter> will no longer remove a subroutine that the |
647 | exporting package re-exports. Moose re-exports the Carp::confess |
648 | function, among others. The reasoning is that we cannot know whether |
649 | you have also explicitly imported those functions for your own use, so |
650 | we err on the safe side and always keep them. |
600f7f85 |
651 | |
def57e8d |
652 | =head1 0.56 |
600f7f85 |
653 | |
0f13f53c |
654 | C<Moose::init_meta> should now be called as a method. |
600f7f85 |
655 | |
0f13f53c |
656 | New modules for extension writers, L<Moose::Exporter> and |
657 | L<Moose::Util::MetaRole>. |
600f7f85 |
658 | |
def57e8d |
659 | =head1 0.55_01 |
600f7f85 |
660 | |
661 | Implemented metaclass traits (and wrote a recipe for it): |
662 | |
663 | use Moose -traits => 'Foo' |
664 | |
665 | This should make writing small Moose extensions a little |
666 | easier. |
667 | |
def57e8d |
668 | =head1 0.55 |
600f7f85 |
669 | |
670 | Fixed C<coerce> to accept anon types just like C<subtype> can. |
671 | So that you can do: |
672 | |
673 | coerce $some_anon_type => from 'Str' => via { ... }; |
674 | |
def57e8d |
675 | =head1 0.51 |
600f7f85 |
676 | |
52da380a |
677 | Added C<BUILDARGS>, a new step in C<< Moose::Object->new() >>. |
600f7f85 |
678 | |
def57e8d |
679 | =head1 0.49 |
600f7f85 |
680 | |
0f13f53c |
681 | Fixed how the C<< is => (ro|rw) >> works with custom defined |
682 | C<reader>, C<writer> and C<accessor> options. See the below table for |
600f7f85 |
683 | details: |
684 | |
685 | is => ro, writer => _foo # turns into (reader => foo, writer => _foo) |
686 | is => rw, writer => _foo # turns into (reader => foo, writer => _foo) |
687 | is => rw, accessor => _foo # turns into (accessor => _foo) |
688 | is => ro, accessor => _foo # error, accesor is rw |
689 | |
def57e8d |
690 | =head1 0.45 |
600f7f85 |
691 | |
0f13f53c |
692 | The C<before/around/after> method modifiers now support regexp |
693 | matching of method names. NOTE: this only works for classes, it is |
694 | currently not supported in roles, but, ... patches welcome. |
600f7f85 |
695 | |
0f13f53c |
696 | The C<has> keyword for roles now accepts the same array ref form that |
697 | L<Moose>.pm does for classes. |
600f7f85 |
698 | |
0f13f53c |
699 | A trigger on a read-only attribute is no longer an error, as it's |
700 | useful to trigger off of the constructor. |
600f7f85 |
701 | |
0f13f53c |
702 | Subtypes of parameterizable types now are parameterizable types |
703 | themselves. |
600f7f85 |
704 | |
def57e8d |
705 | =head1 0.44 |
600f7f85 |
706 | |
0f13f53c |
707 | Fixed issue where C<DEMOLISHALL> was eating the value in C<$@>, and so |
708 | not working correctly. It still kind of eats them, but so does vanilla |
709 | perl. |
600f7f85 |
710 | |
def57e8d |
711 | =head1 0.41 |
600f7f85 |
712 | |
0f13f53c |
713 | Inherited attributes may now be extended without restriction on the |
600f7f85 |
714 | type ('isa', 'does'). |
715 | |
0f13f53c |
716 | The entire set of Moose::Meta::TypeConstraint::* classes were |
717 | refactored in this release. If you were relying on their internals you |
718 | should test your code carefully. |
600f7f85 |
719 | |
def57e8d |
720 | =head1 0.40 |
600f7f85 |
721 | |
0f13f53c |
722 | Documenting the use of '+name' with attributes that come from recently |
723 | composed roles. It makes sense, people are using it, and so why not |
724 | just officially support it. |
600f7f85 |
725 | |
0f13f53c |
726 | The C<< Moose::Meta::Class->create >> method now supports roles. |
600f7f85 |
727 | |
86b96832 |
728 | It is now possible to make anonymous enum types by passing C<enum> an |
729 | array reference instead of the C<< enum $name => @values >>. |
600f7f85 |
730 | |
def57e8d |
731 | =head1 0.37 |
600f7f85 |
732 | |
0f13f53c |
733 | Added the C<make_immutable> keyword as a shortcut to calling |
734 | C<make_immutable> on the meta object. This eventually got removed! |
600f7f85 |
735 | |
0f13f53c |
736 | Made C<< init_arg => undef >> work in Moose. This means "do not accept |
600f7f85 |
737 | a constructor parameter for this attribute". |
738 | |
0f13f53c |
739 | Type errors now use the provided message. Prior to this release they |
740 | didn't. |
600f7f85 |
741 | |
def57e8d |
742 | =head1 0.34 |
600f7f85 |
743 | |
744 | Moose is now a postmodern object system :) |
745 | |
0f13f53c |
746 | The Role system was completely refactored. It is 100% backwards |
747 | compat, but the internals were totally changed. If you relied on the |
748 | internals then you are advised to test carefully. |
600f7f85 |
749 | |
750 | Added method exclusion and aliasing for Roles in this release. |
751 | |
0f13f53c |
752 | Added the L<Moose::Util::TypeConstraints::OptimizedConstraints> |
753 | module. |
600f7f85 |
754 | |
0f13f53c |
755 | Passing a list of values to an accessor (which is only expecting one |
756 | value) used to be silently ignored, now it throws an error. |
600f7f85 |
757 | |
def57e8d |
758 | =head1 0.26 |
600f7f85 |
759 | |
0f13f53c |
760 | Added parameterized types and did a pretty heavy refactoring of the |
761 | type constraint system. |
600f7f85 |
762 | |
0f13f53c |
763 | Better framework extendability and better support for "making your own |
764 | Moose". |
600f7f85 |
765 | |
def57e8d |
766 | =head1 0.25 or before |
600f7f85 |
767 | |
0f13f53c |
768 | Honestly, you shouldn't be using versions of Moose that are this old, |
769 | so many bug fixes and speed improvements have been made you would be |
770 | crazy to not upgrade. |
600f7f85 |
771 | |
0f13f53c |
772 | Also, I am tired of going through the Changelog so I am stopping here, |
773 | if anyone would like to continue this please feel free. |
600f7f85 |
774 | |
775 | =head1 AUTHOR |
776 | |
777 | Stevan Little E<lt>stevan@iinteractive.comE<gt> |
778 | |
779 | =head1 COPYRIGHT AND LICENSE |
780 | |
781 | Copyright 2009 by Infinity Interactive, Inc. |
782 | |
783 | L<http://www.iinteractive.com> |
784 | |
785 | This library is free software; you can redistribute it and/or modify |
786 | it under the same terms as Perl itself. |
787 | |
0f13f53c |
788 | =cut |