Question

How to convert hash keys to string in Ruby

Answer 1

hash = { "java" => "AA", "php" => "BB", "c++" => "CC", "ruby" => "DD" }

s = hash.keys.join

puts s

puts s.class



# run:
#   
# javaphpc++ruby
# String
#

 

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Answer 2

hash = { "java" => "AA", "php" => "BB", "c++" => "CC", "ruby" => "DD" }

s = hash.keys.join(' ')

puts s

puts s.class



# run:
#   
# java php c++ ruby
# String
#

 

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