Add Turn Key And Value Arrays Into A Hash as a ruby til

README.md

@@ -9,7 +9,7 @@ and pairing with smart people at Hashrocket.
 
 For a steady stream of TILs, [sign up for my newsletter](https://tinyletter.com/jbranchaud).
 
-_939 TILs and counting..._
+_940 TILs and counting..._
 
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@@ -790,6 +790,7 @@ _939 TILs and counting..._
 - [Squeeze Out The Extra Space](ruby/squeeze-out-the-extra-space.md)
 - [String Interpolation With Instance Variables](ruby/string-interpolation-with-instance-variables.md)
 - [Summing Collections](ruby/summing-collections.md)
+- [Turn Key And Value Arrays Into A Hash](ruby/turn-key-and-values-arrays-into-a-hash.md)
 - [Turning Any Class Into An Enumerator](ruby/turning-any-class-into-an-enumerator.md)
 - [Turning Things Into Hashes](ruby/turning-things-into-hashes.md)
 - [Uncaught Exceptions In Pry](ruby/uncaught-exceptions-in-pry.md)

ruby/turn-key-and-values-arrays-into-a-hash.md

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+# Turn Key And Value Arrays Into A Hash
+
+Let's say you have an array of keys and an array of values:
+
+```ruby
+keys = [:title, :author, :year]
+values = ["The Fifth Season", "N. K. Jemisin", 2015]
+```
+
+You can turn them into a hash where the keys of that hash come from `keys` and
+are tied in order, one-to-one with the `values`.
+
+A `hash` can be created from an array of tuples, where each is a key-value
+pairing. Knowing this, we can `zip` the two arrays together and then turn them
+into a `hash` like so:
+
+```ruby
+> Hash[keys.zip(values)]
+#=> {:title=>"The Fifth Season", :author=>"N. K. Jemisin", :year=>2015}
+```
+
+[source](https://stackoverflow.com/a/23113943/535590)