Accessing elements in list by index and range

[achempion]

You can have this data structure in json

{"test": [1, 2, 3]}

In order to have it formatted like 1, 2 and 3 you have to use something like this

{%= join(test[0..count(test)], ", ") %} and {%= test[count(test) - 1], ", ") %}
// or like this
{%= join(test[0..-2], ", ") %} and {%= test[-1], ", ") %}

It whould be great to have [] operator for accessing elements and count and count them.

[erdos]

Hello, this functionality is already available in the latest stencil:

• the length() function can be used to count the elements in an array
• the array access [] operator was added in stencil 0.3.2

[achempion]

I think [] operator works only on objects to access properties, not arrays, i.e. I can't slice arrays or get n-th element.

[erdos]

you are right, I need to check it again. Let me get back to this question at the end of the day.

[erdostw]

I have release version 0.3.28 with the following improvements:

1. Fixed the array access operator to work on lists (it was working only for Clojure vectors, not for Java lists). The bug also affected the map function for nested lists.
2. Added the joinAnd function that supports your use case!

Let me know your thoughts.

[achempion]

It's working, would be great to have range access, like a[0..-1] but joinAnd solves currently all the needs 💚