array to hash to one hash
To convert an array to a hash and then to a single hash in Ruby, you can follow these steps:
Start with an array of arrays, where each sub-array contains two elements representing key-value pairs.
Use the
to_h
method to convert the array of arrays into a hash.Use the
merge
method to combine the hashes into a single hash, where any duplicate keys will have their values overwritten by the rightmost hash.
Here's an example of the code:
array_of_arrays = [[1, "one"], [2, "two"], [3, "three"]]
hash_from_array = array_of_arrays.to_h
single_hash = hash_from_array.merge({4 => "four", 5 => "five"})
In this example, array_of_arrays
is an array of arrays containing key-value pairs. We use the to_h
method to convert it into a hash called hash_from_array
. Then, we use the merge
method to combine hash_from_array
with another hash containing additional key-value pairs, resulting in a single hash called single_hash
.