CompareItems - OT CompareItems version OT inSourceTag inCompareTag Number Type Description Longint handle String item Longint handle String item result Number not identical identical iflarr an error occurred Discussion OT CompareItems compares two items equality and may same object If or not valid object handle either two items not exist two items not have same type error generated OK set zero returned Otherwise items compared according rules equality used equivalent variable types addition compare BLOB Picture

OT CompareItems

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OT CompareItems version 1

OT CompareItems(inSourceObject; inSourceTag; inCompareObject; inCompareTag) Number

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Parameter Type Description

inSourceObject Longint A handle to an object

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inSourceTag String An item tag

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inCompareObject Longint A handle to an object

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inCompareTag String An item tag

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Function result Number 0 if not identical, 1 if identical, -1 if

← an error occurred

Discussion

OT CompareItems compares two items for equality. inSourceObject and inCompareObject may be the same object.

If inSourceObject or inCompareObject is not a valid object handle, if either of the two items do not exist, or if the two items do not have the same type, an error is generated, OK is set to zero, and -1 is returned.

Otherwise, the items are compared according to the rules of equality used for equivalent variable types in 4D, with the addition that you may compare BLOB, Picture and embedded object items. These additional types are considered identical if they contain the same data byte for byte.

Topics of Interest
Item Utility Routines

Published date: Fri, 14 Jul 2006 18:39:05 GMT → View XML Version

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