有关“获取"的问题在红宝石 [英] Question about "gets" in ruby

问题描述

我想知道为什么当我尝试使用其他输入时，它忽略了我的第二个输入.

I was wondering why when I'm trying to gets to different inputs that it ignores the second input that I had.

#!/usr/bin/env ruby
#-----Class Definitions----

class Animal
  attr_accessor :type, :weight
end

class Dog < Animal
  attr_accessor :name
  def speak
    puts "Woof!"
  end
end

#-------------------------------

puts
puts "Hello World!"
puts

new_dog = Dog.new

print "What is the dog's new name? "
name = gets
puts

print "Would you like #{name} to speak? (y or n) "
speak_or_no = gets

while speak_or_no == 'y'
  puts
  puts new_dog.speak
  puts
  puts "Would you like #{name} to speak again? (y or n) "
  speak_or_no = gets
end

puts
puts "OK..."

gets

如您所见，它完全忽略了我的while语句.

As you can see it completely ignored my while statement.

这是示例输出.

Hello World!

What is the dog's new name? bob

Would you like bob
 to speak? (y or n) y

OK...

推荐答案

问题是您正在从用户的输入中获取换行符.当他们输入"y"时，您实际上得到的是"y \ n".您需要在字符串上使用"chomp"方法来删除换行符，以使其按预期工作.像这样:

The problem is you are getting a newline character on your input from the user. while they are entering "y" you are actually getting "y\n". You need to chomp the newline off using the "chomp" method on string to get it to work as you intend. something like:

speak_or_no = gets
speak_or_no.chomp!
while speak_or_no == "y"
  #.....
end

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