Slice 'first' confused

[A4-Tacks]

In a discussion, due to the translation of first element as 1st element, some people understood it as 1st element of variable a

Then he felt confused about 1st element of variable a should be a[0]

[hkBst]

Your change does not seem to address the issue you mentioned. Second -> 2nd -> element a[2] is the same confusion as First -> 1st -> a[1]...

[A4-Tacks]

The 'first' I mentioned comes from 'by storing a reference to the first element', so changing it to a[2] avoids the problem

[hkBst]

Ah, I see. Maybe just replace "first element" with "starting element"? Then it doesn't matter what index the example uses... What do you think?

[A4-Tacks]

Slice has a .first() method, keeping this term may be more consistent

Moreover, changing 'first' to 'starting' may still lead people to misunderstand 'first of slice' as 'first of original'

[hkBst]

@A4-Tacks Then perhaps we need to be more explicit and say "its first element" instead of "the first element".

[A4-Tacks]

Looks good, I hope it's useful