Building from parts

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Programmatically generating a String is best accomplished with a StringBuffer. A StringBuffer doesn’t generate a new String object until toString() is called.

var sb = new StringBuffer();

sb.write("Use a StringBuffer");
sb.writeAll(["for ", "efficient ", "string ", "creation "]);
sb.write("if you are ")
sb.write("building lots of strings");

// or you can use method cascades:

  ..write("Use a StringBuffer")
  ..writeAll(["for ", "efficient ", "string ", "creation "])
  ..write("if you are ")
  ..write("building lots of strings");

var fullString = sb.toString();

// Use a StringBufferfor efficient string creation if you are building lots of strings

sb.clear(); // all gone!

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