Add length property

[FraMecca]

It is useful for test, currently WalkLength pops elements

[biozic]

Sorry, can you elaborate on where you would like to have a length property ?

[FraMecca]

I'd like to have a lenght on ResultEntities instances that could be useful for tests and other conditions.
At the current state it is only possible to know if the range is empty or not.

[biozic]

You mean a length property that returns the total number of Rows in a ResultRange, right?
There's no API to do that in SQLite: the rows are just stepped over until there is none.
You should use SQL for this (or maybe use the deprecated not-recommended sqlite_get_table function).

[Robert-M-Muench]

This can be simulated by using: SELECT count(*) FROM... which gives you the length of the result set. SQLite is pretty quick so the costs are not to high.