Currently using a!forEach and a!isNullOrEmpty to replace all null values in an array of integers with 0, but would love to learn the most efficient way to do so. Is apply() the way to go here? A different function? Many thanks for any and all help!
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If you just need to remove the null values from array then I would just to use remove(a!isnull,<array>).
But if you really have to replace then I would suggest not to use apply.
The following code snippet might be helpful:
a!localVariables( local!data: { 1, null, 0, 10, null }, local!updatedData: a!update( local!data, wherecontains(tointeger(null()), local!data), 0 ), local!updatedData )
Luckily the a!defaultValue() function does exactly what you're looking for! You just have to run it using a!forEach() to apply it to a list of values:
a!localVariables( local!data: {1, 2, null, 4, null, 6}, a!forEach( items: local!data, expression: a!defaultValue( value: fv!item, default: 0 ) ) )
Also you asked about the apply() function - at this point, everything that the apply function does can also be done by a!forEach(), so I recommend using a!forEach() instead if you need to loop over a list of values.