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.
String join([String separator = ""]) {
if (length == 0) return "";
StringBuffer buffer = StringBuffer()..writeAll(this, separator);
return buffer.toString();
}
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.5.0/dart-collection/ListMixin/join.html