Start » Filter Reference » Data Flow » Conditional Processing » ChooseByPredicate
Expert| Module: | FoundationLite |
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Returns one of the two input objects depending on the specified condition.
Applications
E.g. to choose GREEN color to visualize correct objects or RED to visualize defective ones.
| Name | Type | Description | |
|---|---|---|---|
 |
inObjectIfTrue | <T> | Object to be chosen if the condition is met |
|
inObjectIfFalse | <T> | Object to be chosen if the condition is NOT met |
|
inCondition | Bool | Determines which object is to be chosen |
 |
outObject | <T> | Chosen object |
The type of this filter is defined using the type variable T which represents any valid type. Read more.
Hints
- Also consider the ternary operator ?: in Formula Blocks.
- This filter creates a full copy of one of the input objects. Thus, if you need the highest possible speed, use this filter only with primitive types. An alternative is to use Variant Step macrofilters which are fast and elegant.
Examples
Description of usage of this filter can be found in examples and tutorial: Cap (Easy), IO Serial Port Communicator.
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inObjectIfTrue = "Mike" inObjectIfFalse = "Bill" inCondition = False |
outObject = "Bill" |
Remarks
This filter can be replaced with the following formula:
Complexity Level
This filter is available on Expert Complexity Level.
Filter Group
This filter is member of Choose filter group.
See Also
- ChooseByRange – Returns one of the three input objects depending on whether the associated input value falls below, in or above the specified range.
- ChooseByCase – Returns one of the input objects depending on the specified case index.