lambda syntax with curly braces

[sigod via Digitalmars-d-learn]

On Monday, 10 August 2015 at 14:05:30 UTC, Adam D. Ruppe wrote:
> On Monday, 10 August 2015 at 13:57:50 UTC, sigod wrote:
>> [...]
>
> It does exactly what that says: rewrites it to
>
> (a) {
>   return {
>        writeln(a);
>   };
> }
>
>
> which is returning a delegate.
>
>> [...]
>
> So your code passed a delegate that returned a delegate to 
> each. Since the one returned wasn't called, the writeln never 
> happened.
>
> If you call it like so:
>
>     [1,2,3,4,5]
>         .each!(a => {
>             writeln(a);
>         }()); // added parens call the returned delegate
>
> then you see it.
>
>
>
>
> The => thing in D is meant only for trivial, single line 
> things. If you want multiple lines, that's where the {} syntax 
> comes in with no need for the =>.
>
> .each!( (a) {
>        writeln(a);
>   });

I see. But it's really counter intuitive after working with C#. 
Probably documentation should stress out the difference.

Thanks, Adam.