List of Lists as Value in Dictionary - Not Working?

[boofuss60]

I want to put some lists of lists in a dictionary. I'm getting strange results. Shouldn't I be able to do this?

[dora_paz]

Works fine for me

[Peter]

This is because your use the same names so it picks the last one. MARK 4 and JOHN 3. The names should be unique.

[boofuss60]

Really? The dictionary will work, or not work, depending on what's in it? When you say "names", these are data values. So if I have a dictionary with a thousand items in it, and the user happens to enter some values that are the same, it breaks?

I'm am new to all this, but that doesn't seem right.

[dora_paz]

You should undestand the json structure of dictionary, within an object you can not have two identical keys

but you can have an array with objects with same keys

I use jsonparseonline to check my json's stucture and I believe this guide might help you

Guide: Dictionary Blocks

[boofuss60]

I'll study on this. I need to know JSON better.

[ewpatton]

Actually, this is a bug in App Inventor that causes the list of lists to be coerced into a dictionary rather than keeping the provided structure. Someone has submitted a fix and it will be in the next release.

[Peter]

If i remember right it is this one

Dictionary constructors coerces list-of-lists to dict

Problem with dictionary of (list of lists)

Hi all, I've created a list of lists and stored it inside a dictionary. [Schermata 2021-02-03 alle 00.20.36] The dictionary stores the list of lists created in the image above as a dictionary {1:10 , 3:4, 5:6, 7:8} (this is the result that print the second alert) and sadly I can't understand why. How can I store a list of lists in a dictionary and then retrieve the same list of lists? edit: Also converting the list of lists in dictionary and then converting again from dictionary to list o…

[ABG]

The ai2-test server works okay for this.