How to pass values from array to array

Question

Can I pass values from one array to another array? Here is an example:

@a = [{:id => '1', :name => 'abcd'}, {:id => '2', :name => "asadad"}, ...]
@b = [0, 1]

I want to pass values from @a to @b like this:

@b[0] = {:id => '1', :name => 'abcd'}
...
@b[1] = {:id => '2', :name => 'asadad'}

Can I do that and how can I do that?

You want to move all values from @a to @b or just some specific ones? — Jesper
– Jesper, Commented Feb 6, 2015 at 10:12

sawa · Accepted Answer · 2015-02-06 10:13:12Z

3

Not clear what you are doing, but it looks like this:

@b = @a.values_at(*@b)

answered Feb 6, 2015 at 10:13

sawa

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3 Comments

Can you please explain what does the * do. Does it have any relation with the pointers or so.

Yeah!!That's what I want to do, thanks you so much :)

@Deep it expands the array elements to an argument list. values_at(*[1,2,3]) becomes values_at(1,2,3)