从ruby hash获取所有密钥

Question

In php you can just do $associative_array_keys = array_keys($associative_array)

Is there a function to get all hash keys in ruby?

I'm currently mapping my hashes and returning the keys: my_hash_keys = my_hash.map{|k,v| k} my_hash_keys = my_hash.map{|k,v| k}

Is there a better solution?

Answer 1

You can call .keys on a Hash to get an array of keys back.

See: Hash#keys