How do I turn this:
[[3, 18], [5, 20], [7, 22]]
into this:
[
{:quantity=>3, :price=>18},
{:quantity=>5, :price=>20},
{:quantity=>7, :price=>22}
]
Hoping to get a one-liner answer, but I'll take what I can get.
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3 Answers
Using Array#map:
a = [[3, 18], [5, 20], [7, 22]]
a.map { |item| {quantity: item[0], price: item[1]} }
# => [{:quantity=>3, :price=>18},
# {:quantity=>5, :price=>20},
# {:quantity=>7, :price=>22}]
a.map { |q, p| {quantity: q, price: p} }
# => [{:quantity=>3, :price=>18},
# {:quantity=>5, :price=>20},
# {:quantity=>7, :price=>22}]
a.map { |item| Hash[[:quantity, :price].zip(item)] }
# => [{:quantity=>3, :price=>18},
# {:quantity=>5, :price=>20},
# {:quantity=>7, :price=>22}]
Comments
Do as below using Array#map
a = [[3, 18], [5, 20], [7, 22]]
a.map { |v1,v2| {:quantity => v1, :price => v2} }
Comments
At the risk of beating a dead horse, my version, with imo better naming
a.map {|(quantity, price)| {quantity: quantity, price: price} }
