On 10/9/07, Guillaume Theoret <[EMAIL PROTECTED]> wrote: > > On 10/9/07, Tony Marston <[EMAIL PROTECTED]> wrote: > > > > ""Nathan Nobbe"" <[EMAIL PROTECTED]> wrote in message > > news:[EMAIL PROTECTED] > > > On 10/9/07, Tony Marston <[EMAIL PROTECTED]> wrote: > > >> > > >> > > >> ""Nathan Nobbe"" <[EMAIL PROTECTED]> wrote in message > > >> news:[EMAIL PROTECTED] > > >> > On 10/9/07, Robert Cummings <[EMAIL PROTECTED]> wrote: > > >> >> > > >> >> Why would I use an interface? :) > > >> > > > >> > because inheritance is not always optimal. > > >> > > >> I have never found a prolem when using an interface was the only > > >> solution, > > >> or even ANY kind of solution. The fact that your designs need it > speaks > > >> volumes of the problems with your designs. > > > > > > im not the one whose been defending my designs in this conversation; > you > > > are. > > > > But you are the one who keeps saying that your approach, where all > member > > variables are hidden, is far superior. I'm just saying that I do share > that > > opinion. > > > > > there are plenty of situations where the interface is the more elegant > > > approach, thats why its here; and thats why it was added in php5. > > > > > >> There's your problem, then. You are wasting your time trying to > implement > > >> fancy design patterns just because design patterns are supposed to be > > >> "cool". > > > > > > i dont recall reading any suggestions to use design patterns because > they > > > are cool. > > > > But you are the one who pointed out that interfaces are used in design > > patterns, therefore they *must* be OK. I am saying that I have never > seen > > any advantages from using interfaces, and I don't waste my time with > design > > patterns. > > > > > infact the advice ive read is to only use them when they make sense. > > > > My point is that interfaces do not make anysense to me at all. I can > access > > all my class methods without them, so what benefit do they give? > > > > > Loader class, Controller Base class, Front Controller - I have none > > >> of that crap in my code, so I don't encounter the problems you have. > When > > >> I > > >> see code like "$this->load->library('email') " I just thank my lucky > > >> stars > > >> that I don't have to maintain it. I think some serious refactoring is > > >> long > > >> overdue. > > > > > > id have to say code igniter is quite a bit more popular than radicore. > > > maybe youre the one who has some refactoring to do. > > > > > > Perhaps you are trying to implement something from another language > and > > >> expecting PHP to be just like that other language, which is always a > > >> stupid > > >> mistake. PHP is different, therefore the solution will be different. > I > > >> suggest you learn how PHP works and design accordingly, and stop > trying > > >> to > > >> force it into emulating another language. > > > > > > > > > well php has certainly gotten its influence from a number of other > > > languages. > > > where do you think the additional features in php5 got their > inspiration > > > from? > > > > Some of those features were implemented just because some a*sholes who > are > > more familiar with other languages keep saying "I can do so-and-so in > > language X, and I want to do exactly the same thing in PHP". Language X > has > > interfaces, so PHP *must* have interfaces, Why? What purpose do they > serve? > > What benefits do they bring? > > > > > btw; > > > heres the definition of implement from dictionary.com > > > > > > im·ple·ment > > > < > https://secure.reference.com/premium/login.html?rd=2&u=http%3A%2F%2Fdictionary.reference.com%2Fbrowse%2Fimplementation > > > > > /n. '?mpl?m?nt; v. '?mpl??m?nt, -m?nt/ Pronunciation Key - Show > Spelled > > > Pronunciation[n. *im*-pl*uh*-m*uh*nt; v. *im*-pl*uh*-ment, -m*uh*nt] > > > Pronunciation > > > Key - Show IPA Pronunciation -noun 1.any article used in some > activity, > > > esp. > > > an instrument, tool, or utensil: agricultural implements. > > > notice the use of article; ie data; ie; you are wrong about member > > > variables > > > not being part of a classes implementation. > > > if a variable local to a function can be considered part of its > > > implementation; then a variable local to a class can be > > > considered part of its implementation; its that simple. > > > > Implementation is still an activity or a procedure. A lawnmower is a > tool > > which implements lawnmowing, and it acts upon a lawn. However, the lawn > is > > not part of the implementation, it is the subject of the implementation. > An > > object may contain both variables and operations, but the data is not > part > > of those operations, it is the subject of those operations. > > > > -- > > Tony Marston > > http://www.tonymarston.net > > http://www.radicore.org > > > > -- > > PHP General Mailing List (http://www.php.net/) > > To unsubscribe, visit: http://www.php.net/unsub.php > > > > > > In response to: > > > My point is that interfaces do not make anysense to me at all. I can > access > > all my class methods without them, so what benefit do they give? > > We first sought to use interfaces in our new app when we were at the > Best-Design-Ever stage but scaled them back more and more at each step > of the development. We have pretty much completed the first version of > the app (which contains maybe 90% of projected capability) and > interfaces have pretty much been reduced to shells whose only purpose > are to fake types to make error checking bearable. > > For example we have a rating plugin to which you can pass anything > that implements the CanBeRated interface. The CanBeRated interface > looks something like this: > interface CanBeRated { } > > It used to have method definitions and whatnot inside but it was > causing problems and was all-around useless so it got commented out. > Implementing CanBeRated is really just saying yeah it makes sense to > rate this stuff, I haven't passed this to you by accident. The rating > plugin doesn't actually care what you pass it, it'll just add an entry > into the ratings switchboard with the id of what was rated, the type > (which is the class), the rating, who rated it and the date. So you > can pass it any object really but just to make sure we don't end up > with bizarre junk in our db we throw InvalidTypeExceptions if whatever > was given doesn't implement CanBeRated. > > We do that in a few other spots too. It's handy to have if you want to > fake types but not by any means necessary. > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > i did this once to patch up an area of an application is was working on.
i could see the interface being something like rateable with perhaps a getRating() method or something; but of course i have no clue about the details of the application. -nathan
