Android Question JSONGenerator.To(Pretty)String sequence different from map?

[KMatle]

I mentioned that the sequence of the generated ToString or ToPrettyString is different from the key/values in the map used.

Examples

Map:

key1, value1
key2, value2
key3, value3
...
...
keyn, valuen

After JSONGenerator.Initialize(MyMap) & "ToString" or "ToPrettyString":

key1, value1, key3, value3, key7, value7, key2, value2 and so on...

This is not a problem but am I blind (didn't see the paramater causing this) or what is the reason for the de-sequencing? I would have expected a 1:1 structure (1,2,3,4 ... and not "randomly" 1,3,7,2)

 

[Erel]

Generally speaking maps (or hashtables) data structures do not have any specific order. B4A Map does have a consistent order. However the native JSON parser doesn't respect it.

Note that the main reason for implementing a map with a consistent order was to allow iterating over the items with Map.GetKeyAt / GetValueAt. This was before the For Each loop was introduced.

 

[KMatle]

Ok, good to know.