ruby - 给定散列中的多个其他值，如何在散列数组中查找并返回散列值

Question

我有这个哈希数组:

results = [
   {"day"=>"2012-08-15", "name"=>"John", "calls"=>"5"},
   {"day"=>"2012-08-15", "name"=>"Bill", "calls"=>"8"},
   {"day"=>"2012-08-16", "name"=>"Bill", "calls"=>"11"},
]

如何搜索结果以查找 Bill 在 15 日打了多少个电话？

阅读“Ruby easy search for key-value pair in an array of hashes”的答案后，我认为这可能涉及扩展以下查找语句:

results.find { |h| h['day'] == '2012-08-15' }['calls']

Answer 1

您走在正确的轨道上!

results.find {|i| i["day"] == "2012-08-15" and i["name"] == "Bill"}["calls"]
# => "8"