Question

......不包含通用目标的所有公开方法? 我指的是,除进行阵列的减员外。我只是想迅速审查某个物体向我提供的东西,而有时却不去查阅。

Answer 1

methods ,instance_methods ,public_methods, private_methods and protected_methods 所有人都接受一个血清参数,以确定贵国的物体父母的方法是否包含在内。

例如:

ruby-1.9.2-p0 > class MyClass < Object; def my_method; return true; end; end;
ruby-1.9.2-p0 > MyClass.new.public_methods
 => [:my_method, :nil?, :===, :=~, :!~, :eql?, :hash, :<=>, :class, :singleton_class, :clone, :dup, :initialize_dup, :initialize_clone, :taint, :tainted?, :untaint, :untrust, :untrusted?, :trust, :freeze, :frozen?, :to_s, :inspect, :methods, :singleton_methods, :protected_methods, :private_methods, :public_methods, :instance_variables, :instance_variable_get, :instance_variable_set, :instance_variable_defined?, :instance_of?, :kind_of?, :is_a?, :tap, :send, :public_send, :respond_to?, :respond_to_missing?, :extend, :display, :method, :public_method, :define_singleton_method, :__id__, :object_id, :to_enum, :enum_for, :==, :equal?, :!, :!=, :instance_eval, :instance_exec, :__send__] 
ruby-1.9.2-p0 > MyClass.new.public_methods(false)
 => [:my_method]

如@Marnen所指出的,这些方法在动态上作了界定(例如>method_missing)。你对这些图书馆的唯一旁观是,希望你重新使用的图书馆有充分记录。

Answer 2

你们是否正在寻找这一结果?

class Foo
  def bar
    p "bar"
  end
end

p Foo.public_instance_methods(false) # => [:bar]

ps I expect this was not the result you were after:

p Foo.public_methods(false)          # => [:allocate, :new, :superclass]

Answer 3

我开始试图在https://github.com/bf4/Notes/blob/master/code/ruby_inspection.rb 上记录所有这些检查方法。

其他答复指出:

class Foo; def bar; end; def self.baz; end; end

首先,我要对方法进行分类。

Foo.public_methods.sort # all public instance methods
Foo.public_methods(false).sort # public class methods defined in the class
Foo.new.public_methods.sort # all public instance methods
Foo.new.public_methods(false).sort # public instance methods defined in the class

B. 寻找你们的选择

Foo.public_methods.sort.grep /methods/ # all public class methods matching /method/
# ["instance_methods", "methods", "private_instance_methods", "private_methods", "protected_instance_methods", "protected_methods", "public_instance_methods", "public_methods", "singleton_methods"]
Foo.new.public_methods.sort.grep /methods/
#  ["methods", "private_methods", "protected_methods", "public_methods", "singleton_methods"]

另见 https://stackoverflow.com/questions/123494/whats-your-favourite-irb-trick 。

Answer 4

如果有的话,那将非常有用:由于Ruby能够用动态的文法伪造方法,公共方法往往不是你唯一的选择。因此,你确实可以依靠<代码>instance_methods来告诉你,这非常有益。

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