(/= item1 item2 ...)

The two aren't equal.

This function tells you if two items are not equal:

• If item1 does not equal item2, this function returns a T (true).
• If the two items are equal, this function returns nil (false).

When more than two items are given, each item must be different to return a T. The items can be numbers or strings.

Examples

NOTE Comparison statements (such as = (equal to operator) and < (less than operator) are typically used together with conditional statements, such as if...then, while, and cond. The comparisons let you test a pair of conditions (for example, does i= 0) to know when to exit the conditional (for example, while i > 0).

Tell me about...

(< item1 item2 ...)

(<= item1 item2 ...)

(= item1 item2 ...)

(> item1 item2 ...)

(>= item1 item2 ...)

(if test statement1 [statement2])

(while text statement )

LISP Compatibility

Programming Overview of LISP (LISt Processing) Language