Meaning Of !=

In the following example the line of code

IF RIGHT(@StringArray,1) != @Delimiter

includes " != ". What does it mean?

Thanks, Bill

Full Example:-- Creates a UDF that returns a string array as a table result set
CREATE FUNCTION dbo.udf_ParseArray
( @StringArray varchar(max),
@Delimiter char(1) )
RETURNS @StringArrayTable TABLE (Val varchar(50))
AS
BEGIN
DECLARE @Delimiter_position int

IF RIGHT(@StringArray,1) != @Delimiter
SET @StringArray = @StringArray + @Delimiter

WHILE CHARINDEX(@Delimiter, @StringArray) <> 0
BEGIN
SELECT @Delimiter_position =
CHARINDEX(@Delimiter, @StringArray)

INSERT @StringArrayTable
VALUES (left(@StringArray, @Delimiter_position - 1))

SELECT @StringArray = STUFF(@StringArray, 1,
@Delimiter_position, '')
END
RETURN
END

GO