Anonymous function syntax

[Jacob Carlborg]

On 2011-09-22 00:50, Andrei Alexandrescu wrote:
> On 9/21/11 5:29 PM, bearophile wrote:
>> Walter Bright:
>>
>>> D
>>> (a,b) { return a + b; }
>>
>> In D to define a true lambda you need types too:
>> auto f = (int a,int b){ return a + b; };
>
> No.
>
> Andrei

void foo (int delegate (int, int) a){}

void main ()
{
	foo((a, b) { return a +b;});
}

Results in:

main.d(48): Error: undefined identifier a
main.d(48): Error: undefined identifier b
main.d(48): Error: function main.foo (int delegate(int, int) a) is not 
callable using argument types (_error_ delegate(_error_, _error_))
main.d(48): Error: cannot implicitly convert expression (__dgliteral1) 
of type _error_ delegate(_error_, _error_) to int delegate(int, int)
Failed: /Users/jacob/.dvm/bin/dvm-current-dc  -v -o- 
'/Users/jacob/development/d/main.d' -I'/Users/jacob/development/d' 
 >/Users/jacob/development/d/main.d.deps

-- 
/Jacob Carlborg