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MergeDefault
Creates a non-conditional value from a conditional one by replacing Nil with the specified default value.
| Name | Type | Description | |
|---|---|---|---|
 |
inConditionalObject | <T>? | Input conditional object |
|
inDefaultObject | <T> | Object to be used if the conditional object is empty |
 |
outObject | <T> | Value of the conditional object, if it exists, or the default otherwise |
The type of this filter is defined using the type variable T which represents any valid type. Read more.
Applications
This filter is usually used at the end of a program or subprogram to decide how to resolve special cases, represented by the Nil value.
Description
This filter is a tool of the Conditional Execution mechanism. It receives a conditional value and:
- If it is Nil, replaces it with a specified default value.
- Otherwise, copies it to the output.
Hints
- Connect the conditional value to the inConditionalObject input.
- On the inDefaultObject input define a value that will be substituted for Nil on the inConditionalObject input.
- Also consider the coalescing operator (??) in Formula Blocks.
Examples
|
|
|
inConditionalObject = 5 inDefaultObject = 8 |
outObject = 5 |
|
inConditionalObject = Nil inDefaultObject = 8 |
outObject = 8 |
Remarks
This filter is a counterpart of the IFERROR function from Microsoft Excel.
This filter can replace the following formula:
Complexity Level
This filter is available on Basic Complexity Level.
