如何使类的构造函数私有在Ruby？ [英] How to make the class constructor private in Ruby?

问题描述

  class A 
 private 
 def initialize 
 putwtf？ 
 end 
 end 
 
 A.new #still工作和调用initialize 
  

和

  class A 
 private 
 def self.new 
 super.new 
 end 
 end 
  

>

那么什么是正确的方法呢？我想让 new private并通过工厂方法调用。

解决方案

p>尝试：

  A类
 private_class_method：new 
 end 
  

更多APIDock

class A
private
  def initialize
    puts "wtf?"
  end
end

A.new #still works and calls initialize

and

class A
private
  def self.new
    super.new
  end
end

doesn't work altogether

So what's the correct way? I want to make new private and call it via a factory method.

解决方案

Try this:

class A
  private_class_method :new
end

More on APIDock

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