rfc:lexical-anon

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rfc:lexical-anon [2016/04/20 06:44] – krakjoerfc:lexical-anon [2017/09/22 13:28] (current) – external edit 127.0.0.1
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 It has been suggested that it would be better to have [use(...)] on each function declaration. This would lead to a lot of repetition, and fragmented code that is more difficult to reason about. It has been suggested that it would be better to have [use(...)] on each function declaration. This would lead to a lot of repetition, and fragmented code that is more difficult to reason about.
 +
 +Another suggestion made is to allow symbols inline, so that the following code is legal:
 +
 +<code php>
 +class {
 +    public $prop = $var;
 +}
 +</code>
 +
 +This has some appealing advantages, such as using expression to initialize properties. But it also raises huge inconsistencies, why should this:
 +
 +<code php>
 +class {
 +    public $prop = new Foo();
 +}
 +</code>
 +
 +Be allowed, while not allowing the same thing in normal classes.
 +
 +Additionally, the following code would also have to be legal:
 +
 +<code php>
 +class {
 +    public $prop = &$this->prop;
 +}
 +</code>
 +
 +This is almost literally backwards.
 +
 +If we are going to allow expressions for anonymous classes that we do not allow for normal classes, then it is better to leave that for another RFC.
 +
 +What we are doing is only importing symbols, we don't //need// to invent a new way to initialize them.
  
 The cognitive overhead of "anything use'd by the declaration is a member property" is almost nil. The cognitive overhead of "anything use'd by the declaration is a member property" is almost nil.
Line 90: Line 122:
 The property reference must be well formed, and accessible in the lexical scope: The property reference must be well formed, and accessible in the lexical scope:
  
-''$object->property''+<code php> 
 +$object->property 
 +</code>
  
 A property name cannot be used twice: A property name cannot be used twice:
  
-''use($prop, $prop)''+<code php>use($prop, $prop)</code>
  
 and and
  
-''use($prop, $this->prop)''+<code php>use($prop, $this->prop)</code>
  
 Will both raise compile time errors: Will both raise compile time errors:
rfc/lexical-anon.txt · Last modified: 2017/09/22 13:28 by 127.0.0.1

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