Creating a hash from an array of strings and arrays

Question

I have an array like this:

[
  "temp-1",
  [69.63076923076923, 5.397898451463096],
  "temp-2",
  [70.44, 0.9044335243676014],
  "hum-1",
  [45.199999999999996, 0.09999999999999788],
  "hum-2",
  [43.82, 1.0568822072492268]
]

I want to convert it to a hash with the string as keys and the arrays as the value:

{
  "temp-1" => [69.63076923076923, 5.397898451463096],
  "temp-2" => [70.44, 0.9044335243676014],
  ...
}

What is a clean way to do this?

Roman Kiselenko · Accepted Answer · 2018-09-27 20:07:08Z

5

You can use Hash[...], here is an example:

=> array = ["temp-1", [69.63076923076923, 5.397898451463096], "temp-2", [70.44, 
0.9044335243676014], "hum-1", [45.199999999999996, 
0.09999999999999788], "hum-2", [43.82, 1.0568822072492268]]
=> Hash[*array]
#> {"temp-1"=>[69.63076923076923, 5.397898451463096], "temp-2"=>[70.44, 0.9044335243676014], "hum-1"=>[45.199999999999996, 0.09999999999999788], "hum-2"=>[43.82, 1.0568822072492268]}

answered Sep 27, 2018 at 20:07

Roman Kiselenko

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3 Comments

tadman Over a year ago

Ah, to_h requires proper nested pairs.

ccoeder Over a year ago

It's so clean. Damn I love ruby!

Cary Swoveland Over a year ago

...or arr.each_slice(2).to_h.

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