lazy redux

[retard]

Tue, 08 Dec 2009 01:02:04 +0100, Lutger wrote:

> retard wrote:
> ...
>> You surely understand that Walter doesn't have enough time to change
>> this before the Andrei's book is out. So D2 won't be getting this.
>> Besides, he hasn't even said that he likes the syntax. And D can't
>> infer the types that way, you would need
>> 
>>> Foo (  (auto a, auto b) => a + b );
> 
> why not ? (a, b) { return a +  b; } already works for template alias
> parameters.
>  
>> or
>> 
>>> Foo (  [T,S](T a, S b) => a + b );
>> 
>> 
>>> // 4. lambda with statement (previous examples were expressions)
>>> Array.FindAll (arr, item =>  { return item.Contains ("abc"); } ); //
>>> curly braces, semicolon and return are required when statement is
>>> used.
>>> 
>>> D could use:
>>> 
>>> 1. auto t = new Thread ( { a=42 } );
>>> or auto t = new Thread ( () { a=42 } );
>>> 
>>> 2. array.findAll (arr, (item) { item.contains ("abc") } );
>> 
>> Andrei invented the string template parameter hack to avoid this. This
>> would work too slowly since the dmd backend from the 1960s cannot
>> inline anonymous functions. It can only inline named functions.
>> 
>> 
> I don't think inlining is done in the backend.

Nope, but it isn't done in other parts of the compiler, either, for that 
matter.