パンくず
Ruby Cookbook
オブジェクトのメソッドリスト
概要
オブジェクトのメソッドリスト
内容
＜メソッドリストの取得＞
メソッドのリストの取得はObject#methods
クラスメソッドのリストの取得は Object#singleton_methods
＜メソッドの保持確認＞
インスタンスメソッドの確認はrespond_to?
クラスメソッドの確認はmethod_defined?
サンプルコード
# encoding: Windows-31J require "pp" class Hoge end class ExtendedHoge < Hoge public def public_instance_hoge end protected def protected_instance_hoge end private def private_instance_hoge end def ExtendedHoge.class_hoge end end extended_hoge = ExtendedHoge.new print "extended_hoge.methods=" pp extended_hoge.methods.sort print "extended_hoge.public_methods=" pp extended_hoge.public_methods.sort print "extended_hoge.protected_methods=" pp extended_hoge.protected_methods.sort print "extended_hoge.private_methods=" pp extended_hoge.private_methods.sort print "ExtendedHoge.singleton_methods=" pp ExtendedHoge.singleton_methods.sort print "extended_hoge.respond_to? (:protected_instance_hoge)=" pp extended_hoge.respond_to? (:protected_instance_hoge) print "ExtendedHoge.method_defined? (:singleton_methods)=" pp ExtendedHoge.method_defined? (:singleton_methods)
出力
extended_hoge.methods=[:!, :!=, :!~, :<=>, :==, :===, :=~, :__id__, :__send__, :class, :clone, :define_singleton_method, :display, :dup, :enum_for, :eql?, :equal?, :extend, :freeze, :frozen?, :hash, :initialize_clone, :initialize_dup, :inspect, :instance_eval, :instance_exec, :instance_of?, :instance_variable_defined?, :instance_variable_get, :instance_variable_set, :instance_variables, :is_a?, :kind_of?, :method, :methods, :nil?, :object_id, :pretty_inspect, :pretty_print, :pretty_print_cycle, :pretty_print_inspect, :pretty_print_instance_variables, :private_methods, :protected_instance_hoge, :protected_methods, :public_instance_hoge, :public_method, :public_methods, :public_send, :respond_to?, :respond_to_missing?, :send, :singleton_class, :singleton_methods, :taint, :tainted?, :tap, :to_enum, :to_s, :trust, :untaint, :untrust, :untrusted?] extended_hoge.public_methods=[:!, :!=, :!~, :<=>, :==, :===, :=~, :__id__, :__send__, :class, :clone, :define_singleton_method, :display, :dup, :enum_for, :eql?, :equal?, :extend, :freeze, :frozen?, :hash, :initialize_clone, :initialize_dup, :inspect, :instance_eval, :instance_exec, :instance_of?, :instance_variable_defined?, :instance_variable_get, :instance_variable_set, :instance_variables, :is_a?, :kind_of?, :method, :methods, :nil?, :object_id, :pretty_inspect, :pretty_print, :pretty_print_cycle, :pretty_print_inspect, :pretty_print_instance_variables, :private_methods, :protected_methods, :public_instance_hoge, :public_method, :public_methods, :public_send, :respond_to?, :respond_to_missing?, :send, :singleton_class, :singleton_methods, :taint, :tainted?, :tap, :to_enum, :to_s, :trust, :untaint, :untrust, :untrusted?] extended_hoge.protected_methods=[:protected_instance_hoge] extended_hoge.private_methods=[:Array, :Complex, :Float, :Integer, :Rational, :String, :__callee__, :__method__, :`, :abort, :at_exit, :autoload, :autoload?, :binding, :block_given?, :caller, :catch, :eval, :exec, :exit, :exit!, :fail, :fork, :format, :gem, :gem_original_require, :gets, :global_variables, :initialize, :initialize_copy, :iterator?, :lambda, :load, :local_variables, :loop, :method_missing, :open, :p, :pp, :print, :printf, :private_instance_hoge, :proc, :putc, :puts, :raise, :rand, :readline, :readlines, :remove_instance_variable, :require, :require_relative, :select, :set_trace_func, :singleton_method_added, :singleton_method_removed, :singleton_method_undefined, :sleep, :spawn, :sprintf, :srand, :syscall, :system, :test, :throw, :trace_var, :trap, :untrace_var, :warn] ExtendedHoge.singleton_methods=[:class_hoge] extended_hoge.respond_to? (:protected_instance_hoge)=true ExtendedHoge.method_defined? (:singleton_methods)=true
