2017-02-15 21:25 GMT+01:00 Michał Brzuchalski <mic...@brzuchalski.com>:
> Assumming they would be closer to immutable objects they may have some
> usefull... I was gonna say methods but the term doesn't fit to enums.
> But using one of my favourite userland implementation such as `esky\enum`
> package there are ways to create enumeration from value or from name.
> Those methods are quite usefull when converting user data passed in
> request from string to enumeration.
> Given the example:
>
> enum Day {
> MONDAY,
> TUESDAY,
> WEDNESDAY,
> THURSDAY,
> FRIDAY,
> SATURDAY,
> SUNDAY
> }
>
> When using passed from request data proper enumeration could be restored
> for eg.
>
> $_GET['day'] = 'MONDAY';
> $day = Day::fromName($_GET['day']); // Day.MONDAY
>
> or by value
>
> $day = Day::fromValue(0); // Day.MONDAY
>
> Think of it as possible way of restoring from primitive types because then
> enums would really be closer to classes than values.
> And also then could even utilise `object
>
typehint so it'll accept enums also.
(Sorry for second mail - unintended Ctrl+Enter)
>
> 2017-02-15 20:53 GMT+01:00 Rasmus Schultz <ras...@mindplay.dk>:
>
>> In the light of this, maybe enums (assuming this feature comes first)
>> should be implemented as immutable objects rather than values?
>>
>> Type-checking for enums would be important, so in PHP terms, an enum
>> "instance" would likely be closer to an object than a value in nature
>> anyway.
>>
>> The way I look at it, this feature doesn't prevent enums from happening,
>> it
>> just changes the design parameters.
>>
>> Just a thought.
>>
>>
>> On Wed, Feb 15, 2017 at 4:34 PM, Andrea Faulds <a...@ajf.me> wrote:
>>
>> > Hi Marco,
>> >
>> > Marco Pivetta wrote:
>> >
>> >>
>> >> Since the engine is clueless about types until autoloading happens,
>> this
>> >> is
>> >> easily solvable by providing a marker syntax for non-object hints. For
>> >> instance `function foo() : enym:MyEnum {}`
>> >>
>> >
>> > If we're going to do prefixes for non-classes, we might as well copy C
>> > outright: `enum MyEnum`.
>> >
>> > Thanks.
>> > --
>> > Andrea Faulds
>> > https://ajf.me/
>> >
>> >
>> > --
>> > PHP Internals - PHP Runtime Development Mailing List
>> > To unsubscribe, visit: http://www.php.net/unsub.php
>> >
>> >
>>
>
>
>
> --
> regards / pozdrawiam,
> --
> Michał Brzuchalski
> about.me/brzuchal
> brzuchalski.com
>
--
regards / pozdrawiam,
--
Michał Brzuchalski
about.me/brzuchal
brzuchalski.com
