[PHP-INTERNALS] Overloading

On Thu, Jun 19, 2008 at 9:58 AM, Tinsley, Mark wrote:

What about the addition of overloading for PHP 6?

I am not totally up to date on the developments of the parameter type
hints. I briefly read the meeting minutes for PHP 6.

What about with the type hints we have now?

class moo
{

public static function foo(FooClass $FooVar)
{
// do something
}

public static function foo(BooClass $BooVar)
{
// do something
}
}


I have a project where we had to do a sort of pseudo overloading

Class moo
{
/**
* Accept the superclass or any of its sub classes
*/
public static function foo(FooSuperClass $Foo)
{
switch (true)
{
case $Foo instanceof FooClass:
$method = 'fooFoo';
break;

case $Foo instanceof BooClass:
$method = 'fooBoo';
break;

default:
throw new Exception('Unrecognized type: ' .
get_class($Foo));
break;
}

call_user_func(array(self, $method), $Foo);
}

private static function fooFoo(FooClass $FooVar)
{
// do something
}

private static function fooBoo(BooClass $BooVar)
{
// do something
}
}

Mark



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What about the addition of overloading for PHP 6?

I am not totally up to date on the developments of the parameter type
hints. I briefly read the meeting minutes for PHP 6.

What about with the type hints we have now?

class moo
{

public static function foo(FooClass $FooVar)
{
// do something
}

public static function foo(BooClass $BooVar)
{
// do something
}
}


I have a project where we had to do a sort of pseudo overloading

Class moo
{
/**
* Accept the superclass or any of its sub classes
*/
public static function foo(FooSuperClass $Foo)
{
switch (true)
{
case $Foo instanceof FooClass:
$method = 'fooFoo';
break;

case $Foo instanceof BooClass:
$method = 'fooBoo';
break;

default:
throw new Exception('Unrecognized type: ' .
get_class($Foo));
break;
}

call_user_func(array(self, $method), $Foo);
}

private static function fooFoo(FooClass $FooVar)
{
// do something
}

private static function fooBoo(BooClass $BooVar)
{
// do something
}
}

Mark



--
PHP Internals - PHP Runtime Development Mailing List
To unsubscribe, visit: http://www.php.net/unsub.php

On 20.06.2008, at 16:28, Marcus Boerger wrote:

Hello Mark,

we discussed overloading a hell lot of times an dthe conclusionj
always
and every single time has been NO. It would mean a large slowdown for
every single PHP application out there and it is not really that much
halpful. In fact it makes code less readable and maintainable so it
opposes the KISS (Keep It Simple Safe) approach of PHP.