ruby - 文字列の配列で文字列を見つける

Question

特定の単語のすべての文字列の配列で場所を見つけたいと思います。

 phrase = "I am happy to see you happy."
 t = phrase.split
 location = t.index("happy") # => 2 (returns only first happy)




  t.map { |x| x.index("happy") } # => returns  [nil, nil, 0, nil, nil, nil, 0] 

Answer 1

これが方法です

phrase = "I am happy to see you happy."
t = phrase.split(/[\s\.]/) # split on dot as well, so that we get "happy", not "happy."

happies = t.map.with_index{|s, i| i if s == 'happy'} # => [nil, nil, 2, nil, nil, nil, 6]
happies.compact # => [2, 6]

Answer 2

phrase = "I am happy to see you happy."    
phrase.split(/[\W]+/).each_with_index.each_with_object([]) do |obj,res|
  res << obj.last if obj.first == "happy"
end
#=> [2, 6]