Android Question Select Case

[Sergey_New]

Is it possible to use a variable in a Select Case procedure instead of listing values?

Select Case "c"
    Case "a","b","c","d","e"
        ...
    Case Else
        ...
End Select

 

[LucaMs]

I have to try.

Tested with a million integers.
B4XSet = about 1 ms
List = about 2 ms

 

[LucaMs]

I guess there is an "important" reason why Erel created B4XSet, since the difference from List seems non-existent to me.
Unless in B4i List does not exist.

 

[William Lancee]

1msecs vs 2msecs is either "negligible" or "twice as fast"

I suspect that it was a design decision while creating ordered lists which were needed for B4i, since in B4i order in maps is not maintained.
So when we have the mechanism of ordered list, why not add a B4XSet - it would probably take him 5 mins - no harm done and adds the 'contains' method for large sets.

The last few posts of this thread would have been a good chit chat topic.

 

[LucaMs]

1msecs vs 2msecs is either "negligible" or "twice as fast"

about 2 ms

It is not known if it was 1.9 ms versus 2 ms. I'll try with 1,000,000,000!


Unsorted maps ok, but B4XSet looks so similar to List that I just don't understand why it was created.

The last few posts of this thread would have been a good chit chat topic.

Actually, it's better if I ask this (annoying ) question in a new thread.

 

[LucaMs]

I'll try with 1,000,000,000!

100 million.

(logs)

filling B4XSet...
7810 ms

filling List...
16830 ms

xsetData contains 77
0 ms
lstData contains 77
3 ms

 

[William Lancee]

I think we should start a new thread: "How fast is your lookup?"
https://www.b4x.com/android/forum/threads/how-fast-is-your-lookup.164714/