Join a string using delimiters

Question

What is the best way to join a list of strings into a combined delimited string. I\'m mainly concerned about when to stop adding the delimiter. I\'ll use C# for my example

Answer 1

I thint the best way to do something like that is (I'll use pseudo-code, so we'll make it truly language agnostic):

function concat( list,  strict):
  for i in list:
    if the length of i is zero and strict is false:
      continue;
    if i is not the first element:
      result = result + separator;
    result = result + i;
  return result;

the second argument to concat(), strict, is a flag to know if eventual empty strings have to be considered in concatenation or not.

I'm used to not consider appending a final separator; on the other hand, if strict is false the resulting string could be free of stuff like "A,B,,,F", provided the separator is a comma, but would instead present as "A,B,F".