Reduce nested array to string?

Question

I have the following array:

arr = [["Example"]]

I need to reduce it to just "Example" (basically, just remove the array).

I know I could do arr[0][0], but am curious if there's a simple method to just remove the string from the array without using indexes.

For clarification...there will only ever be a single item in the array.

MurifoX · Accepted Answer · 2013-08-21 13:29:29Z

7

For a single item, you can use:

[['array']].join
=> 'array'

Updated with more examples

If you have multiple items, the strings will be combined:

[['array'], ['array']].join
=> 'arrayarray'

And if you pass a parameter to the join method:

[['array'], ['array']].join('&')
=> 'array&array'

answered Aug 21, 2013 at 13:18

MurifoX

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5 Comments

OP question is just about one element.

Could be, but it could be just an example. I'm going to make an edit to clarify your answer.

@screenmutt it works for multiple items : [["123"],["456"]].join returns "123456"

@MarcinDoliwa Only if you want to combine the object, that wasn't specified in the question.

If you dont want, just pass separator [["123"],["456"]].join("|") outputs "123|456"

Linuxios · Accepted Answer · 2013-08-21 13:16:15Z

2

While this is not as efficient as [0][0], it will still work:

arr.flatten.first

answered Aug 21, 2013 at 13:16

Linuxios

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