# join method

1. @override

String join([

1. String separator = ""

])
override

Converts each element to a String and concatenates the strings.

Iterates through elements of this iterable, converts each one to a String by calling Object.toString, and then concatenates the strings, with the `separator` string interleaved between the elements.

Example:

    final planetsByMass = <double, String>{0.06: 'Mercury', 0.81: 'Venus',
      0.11: 'Mars'};
    final joinedNames = planetsByMass.values.join('-'); // Mercury-Venus-Mars

## Implementation

    @override
    String join([String separator = ""]) {
      final buffer = StringBuffer();
      bool first = true;
      for (final element in this) {
        if (!first) {
          buffer.write(separator);
        }
        buffer.write(element.toString());
        first = false;
      }
      return buffer.toString();
    }