Re: Re: Simplest way of enforcing an array of instances of a specific class but treating the whole thing as an array.

On 24 February 2011 18:28, David Harkness <david.h@highgearmedia.com> wrote: > If each array will contain a single type of object, but you need many of > these arrays, each containing a different type of object, I recommend > creating a generic "instances-of-class" array using ArrayObject. You can > enforce the type in append(), offsetSet(), and exchangeArray() and then > check the configured type in methods that want to enforce it. >     function drawMap(TypedArray $latLngs=null) { >         if ($latLngs && !$latLngs.containsOnly('LatLng')) { >             throw new InvalidArgumentException('$latLngs must contain only > LatLngs'); >         } >         ... >     } > I guess since there are only three methods to override it wouldn't be too > painful to create a separate class for each type to get method declaration > type hinting. If you aren't containing too many classes and you pass them > around a lot, it may be worth it since you won't have to test the container > inside the method at all. >     function drawMap(LatLngArray $latLngs=null) ... > Looks like someone beat us to it: >    >  http://liamgraham.wordpress.com/2007/05/21/typesafe-arrays-for-php/ > David > That's it and in the direction I was heading. Thanks David - and liamgraham -- Richard Quadling Twitter : EE : Zend @RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY