base.StringBuffer.getCharAt

Return the character at a specified position.

Syntax

getCharAt(
   index INTEGER )
  RETURNS STRING
  1. index is the character position in the string.

Usage

The getCharAt() method returns the character from the string buffer at the position that you specify.

The first character position is 1.

The method returns NULL if the position is lower than 1 or greater than the length of the string.

Important: When using byte length semantics, the position is expressed in bytes. When using char length semantics, the unit is characters. This matters when using a multibyte locale such as UTF-8.

Example

MAIN
   DEFINE buf base.StringBuffer 
   LET buf = base.StringBuffer.create()
   CALL buf.append("abcdef")
   DISPLAY buf.getCharAt(3)
END MAIN
Output:
c