UString.Substring Method

Explanation	Cut out a part of the character string. This method cuts out the character string without being aware of the character type of the target character string. Use the mid function to cut out a character string that contains double - byte characters in the target character string. The difference with Slice method The smaller value of start and end is the start position of the character string to be acquired. (Substring (0, 3) and Substring (3, 0) have the same result) If a negative value is specified for the argument, it is replaced with 0.
Call format	var s = str.Substring( start, end )
Return value	Cut out character string
Arguments	integer start	Leading position to cut out Specify a number starting from 0
	integer end	End position to cut out (cut out to the character before the specified position) Specify a number starting from 0
Exception	Func-4	Invalid argument
Example of use	`var str = new UString("abcdefghi"); print(str.Substring(1, 2), "\n");`
Related item	Slice method