Concatenate list of strings

Question

Say I have list of strings in Ceylon. (It does not have to be a List<String>; it could be an iterable, sequence, array, etc.) What is the best way to concatenate all these strings into one string?

Answer 1

The most efficient solution is to use the static method String.sum(), since that is optimized for a stream of Strings (and uses a StringBuilder) under the covers.

value concat = String.sum(strings);

The other solutions proposed here, while correct, all use generic functions based on Summable, which in principle are slightly slower.