Functions.Difference Method |  |
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Returns an integer, 0 through 4, which represents the relative phonetic difference between two character expressions.
Namespace: XSharp.VFP
Assembly: XSharp.VFP (in XSharp.VFP.dll) Version: 2.18
SyntaxFUNCTION Difference( cExpression1, cExpression2 ) AS USUAL CLIPPER
[ClipperCallingConventionAttribute(new string[] { ... })] public static Usual Difference( Usual cExpression1 = default, Usual cExpression2 = default )
Parameters
- cExpression1 (Optional)
- Type: Usual
Specifies the character expressions that DIFFERENCE( ) compares. - cExpression2 (Optional)
- Type: Usual
Specifies the character expressions that DIFFERENCE( ) compares.
Return Value
Type: UsualNumeric
Remarks
Difference( ) is useful for searching tables when the exact spelling of an entry isn't known.
The more alike the two expressions are spelled, the higher the number Difference( ) returns. If the character expressions are spelled very similarly, Difference( ) returns 4. For two character expressions with little in common phonetically, Difference( ) returns 0.
The more alike the two expressions are spelled, the higher the number Difference( ) returns. If the character expressions are spelled very similarly, Difference( ) returns 4. For two character expressions with little in common phonetically, Difference( ) returns 0.
ExamplesX#
1STORE 'Smith' TO gcName1 2STORE 'Smythe' TO gcName2 3STORE 'Smittie' TO gcName3 4STORE '' TO gcName4 5Clear 6? Difference(gcName1, gcName2) // Displays 4 7? Difference(gcName1, gcName3) // Displays 4 8? Difference(gcName1, gcName4) // Displays 1
See Also