Reputation: 899
I have Map
and OrderedMap
objects.
I need to key different then 0,1,2 this is why I don't use List
.
But I need to add arrows to move up/down elements in this list. Also it would be good to set "insert after" not only as last element.
I know that it sounds like I need to List
, but too many function based on keys different than 0,1,2 to change this objects.
Any hints how can I move elements inside this kind of elements?
Thanks in advance for any hints.
Upvotes: 0
Views: 1366
Reputation: 780
So let say you have a map like this
fromJS({
saturn: 'planet',
earth: 'planet,
sun: 'star'
})
You can use
immutable.get('items')
.keySeq()
.indexOf("earth")
// returns 1
The result will be the index if the Map were a List or Array. -1 would be returned if not found.
On the other hand, if you need to find the map key with the index, you can do this:
immutable.get('items')
.keySeq()
.findIndex(k => k === 1)
// returns "earth"
Upvotes: 1