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ABL Reference
Class Properties and Methods Reference
:
IsNull( ) method (JsonArray)
IsNull( ) method (JsonArray)
Returns a LOGICAL indicating if an element in a JsonArray contains the null value.
Return type:
LOGICAL
Access:
PUBLIC
Applies to:
Progress.Json.ObjectModel.JsonArray class
Syntax
IsNull( INPUT
index
AS INTEGER )
index
An INTEGER identifying the element to be tested. Indexing into JsonArrays is 1-based.
A JsonError is raised if
index
is less than 1, is greater than the length of the JsonArray, or is the Unknown value (
?
).