The dir changed since 2.0.

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>;

echo(sub_str("helloworld", 0, 5)); // ECHO: "hello"
echo(sub_str("helloworld", 5));    // ECHO: "world"