[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'Variants' (#rtl)

NullEqualityRule

Variable describing what to do when checking for equality of Null values

Declaration

Source position: variants.pp line 276

var NullEqualityRule: TNullCompareRule = ncrLoose;

Description

NullEqualityRule is checked when the system needs to compare the equality of variants with Null values (operations opCmpEq, opCmpNe). Check TNullCompareRule for a list of allowed values. The default is ncrLoose.

For determining the order (less than, greater than etc.) see NullMagnitudeRule.

See also

TNullCompareRule

  

Enumeration describing how to handle Null values when comparing variants.

NullMagnitudeRule

  

Variable describing what to do when checking for order of Null values


Documentation generated on: Jun 22 2020