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My code is
a={"1"=>"adi","2"=>"amar","3"=>"rave","4"=>"sum"}
arr=["1","5","3"]
I want to extract all values like this if array values exist in the hash
result =["adi","rave"]
without using any loop.Is it possible
624
Each key can only have one value. But the same value can occur more than once inside a Hash, while each key can occur only once.
Multiple Values For One Key Words are unique, but they can have multiple values (definitions) associated with them. You can do this in Ruby!
Entries in a hash are often referred to as key-value pairs. This creates an associative representation of data. Most commonly, a hash is created using symbols as keys and any data types as values. All key-value pairs in a hash are surrounded by curly braces {} and comma separated.
Hashes are inherently unordered. Hashes provide amortized O(1) insertion and retrieval of elements by key, and that's it. If you need an ordered set of pairs, use an array of arrays.
You could do:
a.values_at(*arr).compact
# => ["adi", "rave"]
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