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I want to collect my users data as array. Below you can find my ruby script.
h = {}
a = [["user_3", 765], ["user_1", 2], ["user_1", 1], ["user_2", 124],["user_1", 3], ["user_2", 223], ["user_2", 334]]
# Expected output :: {"user_3"=>[765], "user_1"=>[2, 1, 3], "user_2"=>[124, 223, 334]}
a.each ...