* 2.4:
udpated LICENSE year
update year on licenses
rundown and typo fix
[Process] Fix#9861 : Revert TTY mode
[Form] Update minimal requirement in composer.json
Fix Empty translations with Qt files
[Console] Fixed command name guessing if an alternative is an alias.
Update UPGRADE-2.3.md to account for #9388
[WebProfilerBundle] Fixed profiler toolbar icons for XHTML.
[BrowserKit] Throw exception on invalid cookie expiration timestamp
[Propel1Bridge][ModelChoiceList] add exception message for invalid classes
* 2.4:
[Debug] fixed unit tests
Avoid notice from being *eaten* by fatal error.
Teardown used wrong property
Modified guessDefaultEscapingStrategy to not escape txt templates
Fix DateType for 32bits computers.
Fixed the registration of validation.xml file when the form is disabled
fixed lexing expression ending with spaces
Fixes#9633, Removed dependency to Symfony\Bundle\FrameworkBundle\Tests\TestCase
[Validator] Replaced inexistent interface.
[HttpKernel] Fix profiler event-listener usage outside request stack context
When getting the session's id, check if the session is not closed
Fix undefined offset when formatting namespace suggestions
Adjusting CacheClear Warmup method to namespaced kernels
This PR was merged into the master branch.
Discussion
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unify constructor initialization style throughout symfony
| Q | A
| ------------- | ---
| Bug fix? | yes
| New feature? | no
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| Fixed tickets | -
| License | MIT
| Doc PR | n/a
In almost all classes symfony uses property initialization when the value is static. Constructor initialization is only used for things that actually have logic, like passed parameters or dynamic values. IMHO it makes the code much more readable because property definition, phpdoc and default value is in one place. Also one can easily see what the constructor implements for logic like overridden default value of a parent class. Otherwise the real deal is just hidden behind 10 property initializations. One more advantage is that it requires less code. As you can see, the code was almost cut in half (210 additions and 395 deletions).
I unified it accordingly across symfony. Sometimes it was [not even consistent within one class](https://github.com/symfony/symfony/blob/master/src/Symfony/Component/Config/Definition/BaseNode.php#L32). At the same time I recognized some errors like missing parent constructor call, or undefined properties or private properties that are not even used.
I then realized that a few Kernel tests were not passing because they were deeply implementation specific like modifying booted flag with a custom `KernelForTest->setIsBooted();`. I improved and refactored the kernel tests in the __second commit__.
__Third commit__ unifies short ternary operator, e.g. `$foo ?: new Foo()`. __Forth commit__ unifies missing parentheses, e.g. `new Foo()`.
Commits
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077a089 unify missing parentheses
2888594 unify short ternary operator
2a9daff [HttpKernel] better written kernel tests
111ac18 unify constructor initialization style throughout symfony
