Count in array
Count in array ( array ; value ) -> Function result
| Parameter | Type | Description | |
|---|---|---|---|
| array | Array | 🡒 | Array where count should occur |
| value | Expression | 🡒 | Value to count |
| Function result | Longint | 🡐 | Number of instances found |
Description
The Count in array command returns the number of times value is found in array.
This command can be used with the following array types: Text, number, Date, Pointer, Object, and Boolean. The array and value parameters must be the same type or compatible.
Note: With Object arrays, you can only use object references in the value parameter.
If no element in array matches value, the command returns 0.
Example 1
The following example allows displaying the number of selected lines in a list box:
//tBList is the name of a List box column array
ALERT(String(Count in array(tBList;True))+" line(s) selected in the list box")
Example 2
You want to count object references in an object array:
ARRAY OBJECT($objects;100)
$o1:={a10;b"xyz"}
$o2:={a10;b"xyz"}
$objects{20}:=$o1
$objects{21}:=$o1
$objects{22}:=$o1
var $n : Integer
$n:=Count in array($objects;$o1) // n = 3
$n:=Count in array($objects;$o2) // n = 0