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Logical Functions

Operator Return
isBlank(field) Returns true if field value/expression is empty.
isDate(field) Returns true if field value/expression is a date.
isNumber(field) Returns true if field value/expression is a number/decimal.
isText(field) Returns true if field value/expression is a string. 
isNull(field) Returns true if field value/expression is null.
contains(sourcestring,findstring) Returns true if findstring is present in sourcestring.
startsWith(sourcestring,searchstring) Returns true if sourcestring starts with searchstring.
endsWith(sourcestring,searchstring) Returns true if sourcestring ends with searchstring.
equalsIgnoreCase(string1,string2) Returns true if string1 equals string2.
matches(sourcestring, regex_pattern) Returns true if sourcestring matches specified regex pattern.

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