Another Auto Casting Question

General
1

I see the advantage of Auto over Variant but I do find it too verbose.

I’m converting some JSON to a Xojo.Core.Dictionary with the Xojo.Data.ParseJSON command. All is well. The result is stored in a Xojo.Core.Dictionary called data. The JSON contains an array of tags, so data.Value("tags") becomes an Auto array holding the tags I want to get at.

All I’m trying to do is convert the Auto array within the Xojo.Core.Dictionary to a Text array. The following seems to work but I’m hoping there is a faster or more elegant way (as looping seems inefficient):

If data.HasKey("tags") Then Dim autoArray() As Auto = data.Value("tags") Dim textArray() as Text data.Remove("tags") ' don't want this anymore For Each tag As Auto In autoArray textArray.Append(CType(tag, Text)) Next tag End If

Is there a better way? I’ve tried several but I keep getting TypeMismatch errors

2

Does for each tag as text in autoArray work?

3

Thanks. Knew there must be a simpler approach.

4

simpler, but for each is ever so slightly slower. At least it was when I benchmarked it for some things. Doesn’t matter for 10 or 20 variables, but might matter a lot for 100k.

5

Interesting. I use For…Each extensively in my app for clarity of reading. What kind of performance hit are we talking compared to a normal loop?

6

I also use it extensively, I only noticed because I was trying to shave as much as possible off some very large methods. Unless you have hundreds of thousands of entries to walk or you care about 1 or 2 extra ms it won’t make any difference. I can’t recall the exact numbers from my testing and I still use it everywhere. But in something you’re trying to shave every MS off of it’s something you can consider.

7

Also remember that For Each does not guarantee the same order.