We can select an item in two ways, using our data: [A B C D] series:
- By specifying the item index in a so-called path notation, such as data/3 ;== C
- By specifying the item index with pick, such as pick data 3 ;== C
=> Now answer question 6 from the Questions section.
If the item index is a variable, here represented by i, you need to use the :i get word notation:
i: 3data/:i ;== Cdata/(i) ;== C ; this alternative works also
This is important to remember, because data/i doesn't give any error, but returns none. When the specified index is out of range, no error is generated, and the result is also none, for example, pick data 100 ;== none.
Strings are also series, so pick and / work for strings as well, with ...
