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 <> != #
 Not equal--binary                               (Relational)
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 Syntax

     <exp1> <> <exp2>
     <exp1> != <exp2>
     <exp1> #  <exp2>

 Type

     Character, date, logical, memo, NIL, numeric

 Operands

     <exp1> and <exp2> are expressions of the same data type or NIL
     to compare for inequality.

 Description

     The <> (not equal) is a binary operator that compares two values of the
     same data type and returns true (.T.) if <exp1> is not equal to <exp2>
     according to the following rules:

     .  Character: The comparison is based on the underlying ASCII
        code and is the inverse of the equal operator (=).  This means that
        the comparison is sensitive to the current EXACT SETting.  See the
        examples below.

     .  Date: Dates are compared according to the underlying date
        value.

     .  Logical: False (.F.) is not equal to true (.T.).

     .  Memo: Treated the same as character.

     .  NIL: All values compared to NIL other than NIL return true
        (.T.).

     .  Numeric: Compared based on magnitude.

 Examples

     .  These examples illustrate how the not equal operator (<>)
        behaves with different data types:

        // Character
        SET EXACT ON

        ? "123" <> "12345"         // Result: .T.
        ? "12345" <> "123"         // Result: .T.
        ? "123" <> ""              // Result: .T.
        ? "" <> "123"              // Result: .T.
        SET EXACT OFF
        ? "123" <> "12345"         // Result: .T.
        ? "12345" <> "123"         // Result: .F.
        ? "123" <> ""              // Result: .F.
        ? "" <> "123"              // Result: .T.

        // Date
        ? CTOD("12/12/88") <> ;
           CTOD("12/12/88")        // Result: .F.

        // Logical
        ? .T. <> .T.               // Result: .F.
        ? .T. <> .F.               // Result: .T.

        // NIL
        ? NIL <> NIL               // Result: .F.
        ? NIL <> 12                // Result: .T.
        ? NIL <> "hello"           // Result: .T.

        // Numeric
        ? 2 <> 1                   // Result: .T.
        ? 1 <> 1                   // Result: .F.