getarrval
Purpose
Synopsis
function getarrval(arr:array, val:any, ...):reflecterror
function getarrval(arr:array, val:any, lsndx:list):reflecterror
Arguments
|
arr
|
An array or a union containg an array
|
|
val
|
A union reference where the value will be returned
|
|
lsndx
|
List of indices to use
|
Return value
The error status as a
reflecterror
Further information
1. The procedure will use the arguments after
val as the list of indices to use (that can be an iterator) or take the provided list
lsndx if it is the only argument.
2. Thanks to this procedure it is possible to retrieve the value of an array cell without knowing its type. However, it is more efficient to dereference the array directly when the type is known (
e.g.
un.array(1).integer).
3. The execution status of the function is notified via its return value. If this value is ignored (
i.e. the function is used as a procedure) the execution of the model will be interrupted in case of error (
e.g. invalid number or type of indices).
Related topics
Module
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