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Ruby编程：ObjectSpace、Proc和Process模块深度解析

1. ObjectSpace模块

ObjectSpace模块提供了与垃圾回收机制交互的功能，还允许使用迭代器遍历所有存活的对象，同时支持对象终结器。

1.1 代码示例

include ObjectSpace a, b, c = "A", "B", "C" puts "a's id is #{a.object_id}" puts "b's id is #{b.object_id}" puts "c's id is #{c.object_id}" define_finalizer(a, lambda {|id| puts "Finalizer one on #{id}" }) define_finalizer(b, lambda {|id| puts "Finalizer two on #{id}" }) define_finalizer(c, lambda {|id| puts "Finalizer three on #{id}" })

上述代码会输出对象的ID，并在对象被垃圾回收时调用相应的终结器。

1.2 模块方法