Re: Lexical scoping

From: Date: Tue, 28 Jan 2014 16:07:57 +0000
Subject: Re: Lexical scoping
References: 1 2 3 4  Groups: php.internals 
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On 28/01/14 13:36, George Bond wrote:
Alternatively, you could say that the ultimate problem is that we don't have strong scoping - braces only define flow control, not scope. So you could introduce a strong-scoping structure. Maybe a double brace? foreach( $array as &$a ){{
     $a = 3;
}} var_dump( $a ); // E_NOTICE, $a is now undefined You could even say that an isolated brace pair (ie not one following a control statement) *always* produces a scope.
My proposal is to add optional strong scoping. As JavaScript has var for function-scoped variables and ECMAScript Harmony will add let for lexically-scoped variables, I'm proposing something similar here. It would allow you to scope to the block, if you so desire. -- Andrea Faulds http://ajf.me/

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