Attribute Function: subList
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Script
The following script extracts a set of values from a list or array of values, to create a sublist.
| Code Block |
|---|
do(
$list = $args[1],
$startPosition = $args[2],
$endPosition = $args[3],
$subList = [],
forEach($i,$startPosition..$endPosition,
$subList = addElement($subList, getElement($list,$i)),
_NULL
),
$subList
) |
Using the Script as a Macro
Save this script into a macro named subList.
Set Minimum Parameters and Maximum Parameters to 3.
In an expression, use the following syntax to run the subList macro in order to return a sub-list extracted from the supplied list.
Syntax
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subList([value1, value2, value3,...], <startPosition>, <endPosition>) |
Returns a portion of the supplied List.
| Argument | Type | |
|---|---|---|
valuen | A value of any type | |
startPosition | Integer | |
Usage
subList([value1, value2, value3,...], <startPosition>, <endPosition>)
Returns a list, drawn from the given list, starting at element position <startPosition>, and ending at element position <endPosition>.
subList([value1, value2, value3,...], <startPosition>)
Returns a list, drawn from the given list, starting at element position <startPosition>, and ending at the end of <List>.
...
| representing where to start extracting values. | Cannot be zero or a negative number. |
endPosition | Integer representing where to stop extracting values. |
Example
| Code Block |
|---|
subList([1,2,3,4,5,6,7,8,9,10],6,9) |
returns the portion of the supplied List between element positions 6 and 9: [6,7,8,9]
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