Returns the part of the string from begin to end, or to the end of the string (end not included).


  • t : The original string.
  • begin : The beginning index, inclusive.
  • end : The ending index, exclusive. If it's omitted, the substring begins with the character at the specified begin and extends to the end of the original string.


use <util/sub_str.scad>;

assert(sub_str("helloworld", 0, 5) == "hello");
assert(sub_str("helloworld", 5) == "world");