Obsecure problem 2

[jfondren]

On Wednesday, 3 August 2022 at 17:33:40 UTC, pascal111 wrote:
> On Wednesday, 3 August 2022 at 17:09:11 UTC, jfondren wrote:
>> On Wednesday, 3 August 2022 at 16:59:53 UTC, pascal111 wrote:
>>> I tried to make a template that receive lambda expression to 
>>> apply it on a given range the user specifies, but I found 
>>> non-understood problem:
>>
>> Compare with:
>>
>> ```D
>> auto foo(Range)(Range range) { // remove isInputRange!T test
>> ...
>>          lolo.foo!(a=>a+2); // call foo!(f)() rather than 
>> foo!()(f)
>> ```
>
> Ok! the program ran and gives "[12, 66, 654, -98, 54]" without 
> adding "2" as I requested!! why?!

You call notfunny(x) in a loop, discarding the result of the 
addition.