Question

I already know that the following code doesn’t work

string s = "";
someEnumerable.Select(x => s+= x);

What I want to know is if there’s some other way (preferably using linq) of get the above behavior without using cyclic statements such as “for” or “foreach”.

Thanks.

Answer 1

string s = someIEnumerable.Aggregate((acc, next) => acc + next);

The acc, is the accumulator (what we’ve aggrigated/combined so far), next is the next element enumerated over. So, here i take what we’ve got so far (initially an empty string), and return the string with the next element appended.