JQ to map array to object with index - how to

Question

pretty simple:

What I have: '["a","b","c"]'

What I want:

{
  "1":"a",
  "2":"b",
  "3":"c"
}

What I am working with.

echo '["a","b","c"]' | jq '. | map({(index(.)) : (.)})'

What I am getting (it seems to be operating on successively smaller arrays):

 echo '["a","b","c"]' | jq '. | map(index((.)))'
[
  0,
  0,
  0
]

peak · Accepted Answer · 2020-09-14 19:22:00Z

6

A functional solution:

[to_entries[] | {(.key+1|tostring): .value}] | add

Or, more succinctly:

with_entries(.key |= (1+.|tostring))

Or, more prosaically:

. as $in
| reduce range(0;length) as $i (null; 
    . + {($i+1|tostring): $in[$i]})

edited Sep 14, 2020 at 19:22

answered Sep 14, 2020 at 18:56

peak

119k21 gold badges185 silver badges218 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

0stone0 Over a year ago

Prosaically: When you do something prosaically, you do it in an ordinary, straightforward way. Succinctly: A way that expresses what needs to be said clearly and without unnecessary words. (For the non-english speakers ;) )

Collectives™ on Stack Overflow

JQ to map array to object with index - how to

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related