I'm feeling a little puzzled and struggling to figure this out.
Let's say I have the following code:
const AnObj = Immutable.Map({
a : "a",
b : Immutable.List.of(
a,
b,
c,
Immutable.Map({
a : "a"
})
)
});
When working with Immutable Maps, we utilize strings in the get() method to access corresponding properties. But how do we retrieve values from an array?
Disclaimer - This information is applicable to all Immutable types, not limited to just List.
There are various methods to access data in Immutable objects:
Using the get method -
AnObj.get('b').get(3).get('a') (Appreciation to @stas).
This method is helpful for shallow structures. However, the syntax can be quite verbose.
For a more concise approach, use getIn -
AnObj.getIn(['b', 3, 'a'])
I find this method convenient as it allows for a generic getter and easy manipulation of key-paths across components.
Another option is utilizing valueSeq/entrySeq when you need all values without concern for indices -
AnObj.get('b').valueSeq()
This is particularly beneficial for large lists where iteration should be deferred until absolutely necessary, making it the most efficient method.
When using List.get(), you have the option to pass numeric zero-based indexes:
AnObj.get('b').get(3).get('a')
For more information, refer to https://facebook.github.io/immutable-js/docs/#/List/get.
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