How to convert [45,32,56] or "45,32,56" to 42,32,56?

Question

I have a hash from which I want to get specific keys

a={1=>32, 23=>23, 24=>232, 56=>123} 
keys=[23,56]

To get values of this keys from a{}, I'm using function

a.values_at 23,56 # => [23, 232]`

Problem is how do I convert [23,56....] to 23,56

Hey,Thanks for your answer but what if there would have been 100 values in an array — Lakhani Aliraza, Aug 26 '19 at 11:18

score 5 · Accepted Answer · answered Aug 26 '19 at 11:11

5

Use splat operator (* before the argument) to convert array to arguments:

a={1=>32, 23=>23, 24=>232, 56=>123} 
# => {1=>32, 23=>23, 24=>232, 56=>123}
keys=[23,56]
# => [23, 56]
a.values_at(*keys)
#=> [23, 123]

See also:

answered Aug 26 '19 at 11:11

mrzasa

Hey mrzasa,Thanks a lot, Today came to knew *(splat) best use case. – Lakhani Aliraza Aug 26 '19 at 11:20

1 Answers1