如何替换字符串中的字符 [英] How to replace the characters in a string

问题描述

我有一种方法可以用来替换字符串中的字符:

I have a method that I want to use to replace characters in a string:

def complexity_level_two
  replacements = {
      'i' => 'eye', 'e' => 'eei',
      'a' => 'aya', 'o' => 'oha'}
  word = "Cocoa!55"
  word_arr = word.split('')
  results = []
  word_arr.each { |char|
    if replacements[char] != nil
      results.push(char.to_s.gsub!(replacements[char]))
    else
      results.push(char)
    end
  }
end

我希望的字符串输出为:Cohacohaa!55

My desired output for the string should be: Cohacohaa!55

但是，当我运行此方法时，它不会替换字符，而只会输出字符串:

However when I run this method it will not replace the characters and only outputs the string:

C
o
c
o
a
!
5
5

该方法无法替换字符串内的正确字符以匹配hash中的字符时，我该怎么办?我如何解决此问题以获得所需的输出?

What am I doing wrong to where this method will not replace the correct characters inside of the string to match that in the hash and how can I fix this to get the desired output?

推荐答案

replacements = {
  'i' => 'eye', 'e' => 'eei',
  'a' => 'aya', 'o' => 'oha'}
word = "Cocoa!55"
word.gsub(Regexp.union(replacements.keys), replacements)
#⇒ "Cohacohaaya!55"

Regexp::union ，

Regexp::union, String#gsub with hash.

这篇关于如何替换字符串中的字符的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！