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Adds a warning message into the log and displays the message to the user. This function is often used when creating a model and trying to work out why an Expression expression is not behaving as expected.

The Detail field of the log message will contain a list of the current values of any Attributes, Pipes and $-Variables which are relevant in the context of the Expressionexpression.


Syntax

warning(message)

ArgumentTypeDescription
messageStringA message to appear in the log. Note that this could be an Expressionexpression.

Examples

ifNull (in.rate, warning("Missing rate") )

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