Re: PHP RFC: Deffering functions by arguments (count or/and type)

On Tue, Nov 5, 2013 at 2:03 PM, Oleg Poludnenko <oleg@poludnenko.info>wrote: > Hi, > > My idea is somehow related to this one: Syntax for variadic > functions<https://wiki.php.net/rfc/variadics> > It is not a competitive idea but a supplemental one. > > So, the main point is to write different implementations for the functions > with the same name, but with different of arguments count or/and type: > > class Config { /** * Returns property value * @param string $key * > @returnmixed */ > public function prop($key) { return isset($this->prop[$key]) ? $this->prop[ > $key] : null; } /** * Sets property value * @param string $key * > @parammixed $value *@returnConfig */ > public function prop($key, $value) { $this->prop[$key] = $value; return > $this; } } > > Also it will be possible to change arguments during inheritance: > > class Figure { /** * Calculate perimeter of an arbitrary figure * > @paramarray $angles *@returnint */ > public function calcPerimeter(array $angles) { return array_sum($angles); } > } class Square extends Figure { /** * Calculate perimeter of a square > *@paramint $angle *@returnint */ > public function calcPerimeter($angle) { return 4 * $angle; } } class > Rectangle extends Figure { /** * Calculate perimeter of a rectangle * > @paramint $height *@paramint $width *@returnint */ > public function calcPerimeter($height, $width) { return 2 * ($height + > $width); } } > > The advantages of the syntax are: > > - It's immediately clear what function implements. > - The function becomes cleaner, without a lot of if-else constructions. > - A great opportunity to change function arguments during inheritance. > > > Regards, > Oleg Poludnenko > Would you mind putting your code in a gist/pastebin (or re-sending the mail with proper formatting)? It's hard to understand what this is about when the code is all in one line :) Nikita