ruby - 区分大小写的替换

Question

我有一个字符串，可能包含单词 "favorite"(美式英语)或大写的 "Favorite"。我想分别用英式拼写 "favourite" 或 "Favourite" 替换它们，而不改变大小写。

我坚持

element.gsub!(/Favorite/i, 'Favourite')

始终将第一个字母大写。我不想让它变得太复杂，或者只是重复这两种情况的替代。什么是最佳解决方案？

Answer 1

subs = {
  'center'   =>'centre',    'defense'   =>'defense',
  'behavour' =>'behaviour', 'apologize' =>'apologise',
  'maneuver' =>'manoeuvre', 'pediatric' =>'paediatric',
  'traveled' =>'travelled', 'honor'     =>'honour',
  'favorite' =>'favourite', 'esthetics'  =>'aesthetics'
}

str = "My Favorite uncle, Max, an honorable gent, is \
       often the Center of attention at parties, mainly \
       because he has a great sense for Esthetics. \
       I apologize for my clumsy maneuver.".squeeze(' ') 

str.gsub(/\b\p{Alpha}+\b/) do |word|
  key = word.downcase
  if subs.key?(key)
    new_word = subs[key]
    new_word.capitalize! if word.match?(/\A\p{Upper}/)
    word = new_word
  end
  word
end
  #=> "My Favourite uncle, Max, an honorable gent, is \ 
  #    often the Centre of attention at parties, mainly \
  #    because he has a great sense for Aesthetics. \
  #    I apologise for my clumsy manoeuvre."

"honorable" 未被修改，因为它不是散列 subs 中的键(即使它包含键 "honor" ).更完整的示例可能包括该词作为键。