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CountValueInArray
Calculates the number of occurrences of an object in an array.
| Name | Type | Description | |
|---|---|---|---|
 |
inArray | <T>Array | Input array |
|
inValue | <T> | Value to count |
 |
outCount | Integer | Number of value occurrences |
The type of this filter is defined using the type variable T which represents any valid type. Read more.
Examples
|
|
|
inArray = {1,4,2,4,4,10,8} inValue = 4 |
outCount = 3 |
Remarks
Please note, that this filter can be concretized only with basic data types and structures of such types. Concretizing the filter with a non-comparable complex data type, such as Image or Region, will raise a Domain Error.
Using this filter to compare data of type Real (or structures with this type) may be tricky. It is caused by the fact that very small (unnoticeable) differences in values of such types may lead to unpredictable negative results in comparison of these values.
Errors
This filter can throw an exception to report error. Read how to deal with errors in Error Handling.
Non-comparable complex data type "TypeName" used in CountValueInArray.
Complexity Level
This filter is available on Basic Complexity Level.
See Also
- FindAll – Finds all locations of a given value in the input array.
