Arcade: for (var path of paths)

Bud — Fri, 04 Mar 2022 16:18:44 GMT

I'm attempting to use the JS from this post — in an Arcade calculation attribute rule: Code Review: Modify Polyline Vertices

That script uses the following for loop:

//This script works as standalone JS: https://jsfiddle.net/x4su7tna/
var paths = [[[0,5,null],[10,10, null],[30,0, null],[50,10, null],[60,10, null]]]
for (var path of paths) {
    return
}

ERROR 002717: 
Invalid Arcade expression, Arcade error: Syntax error in for loop, Script line: 32760

I get that error when I try to save the attribute rule. I think the for loop is the culprit: for (var path of paths) {

If I replace that for loop with for (var path_idx in paths) { , then I can successfully save:

var paths = [[[0,5,null],[10,10, null],[30,0, null],[50,10, null],[60,10, null]]]
for (var path_idx in paths) {
    return
}

Question:
Why do I get an error when I use for (var path of paths) { ?

Re: Arcade: for (var path of paths)

jcarlson — Fri, 04 Mar 2022 16:53:49 GMT

In Arcade, the syntax of a for loop doesn't use "of", only "in".

topic Re: Arcade: for (var path of paths) in ArcGIS Pro Questions

Arcade: for (var path of paths)

Re: Arcade: for (var path of paths)