如何检查哈希是否包含单词

Question

我想检查散列是否包含从gets.chomp检索到的单词。我试过这样：

words = {}
while true
  puts "What do you want to do?"
  puts "1) Learn a word to Baby."
  puts "2) Check how many words Baby has learn."
  action = gets.chomp
  if action == "1"
    puts "Write a word that you want to learn to Baby"
    word = gets.chomp.capitalize

这是问题所在：

if action == "1" && words[word].empty?
  words[word] = Time.now
  puts "With a succes you have learn {Word} to baby."
  if action == "1" && words[word].any?
    puts "This word is already learned by the baby."

我如何检查word（这可能有+1值，因为它已经存在）已经在哈希中，如果是，那么用户就无法向宝宝学习这个词。

Answer 1

您可以使用 words.include？（word）表示数组或 words.key？（word）表示哈希