Re: Little switch improvement: get the used variable

On 24/09/2014 22:33, Andrea Faulds wrote:

On 24 Sep 2014, at 22:17, Rowan Collins <rowan.collins@gmail.com> wrote:

Perhaps rather than a magic function or constant, though, the switch statement could be extended with an "as" argument, which would store the evaluated expression into a normal variable, allowing nesting, and easier optimisation of the engine where the feature isn't used. Thus you could write this: switch( some_expression() as $switch_value ){ case 1:

    do_something();

break; //... default:

    throw new Exception('Undefined input: ' . $switch_value);
    break;

}

Incredibly, some brave soul has gone back in time and already implemented this, when none of us was looking!

     switch($switch_value = some_expression()) {
         ...
     }

Heh, now I feel like a fool for not thinking of that. Treating assigments as expressions just isn't something that jumps to mind, I guess! -- Rowan Collins [IMSoP]