Ruby、君のオブジェクトはなんて呼び出せばいいの？ Google Chart APIでRubyメソッドの命名傾向を知る

all_methods = ObjectSpace.each_object(Module).flat_map do |c|
  c.methods(false) + c.instance_methods(false)
end.reject { |m| "#{m}".start_with? '_deprecated' }

all_methods.size # => 1659
methods = all_methods.uniq
methods.size # => 937

require "gchart"

by_len = methods.group_by(&:size).sort

# build a url for Google Chart API
x, data = by_len.map { |s, m| [s, m.size] }.transpose
y = 0.step(130, 10).to_a

puts Gchart.bar(:data => data,
             :max_value => 130,
             :axis_with_labels => 'x,y',
             :axis_labels => [x, y],
             :size => '600x400',
             :bar_width_and_spacing => 16,
             :title => 'Methods by Name Length',
             :bg => 'efefdd',
             )

##> http://chart.apis.google.com/chart?chxl=0:|1|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16|17|18|19|20|21|22|23|24|25|26|29|31|1:|0|10|20|30|40|50|60|70|80|90|100|110|120|130&chxt=x,y&chbh=16&chf=bg,s,efefdd&chd=s:HHX9641fiWULHKLHHECDCBCABAAA&chtt=Methods+by+Name+Length&cht=bvs&chs=600x400&chxr=0,15,130

avg = methods.map(&:size).tap { |ms| break ms.inject(:+) / ms.size.to_f } # => 7.924226254002135

sd = methods.map(&:size).tap do |ms|
  sigmas = ms.map { |n| (avg - n)**2 }
  break Math.sqrt(sigmas.inject(:+) / ms.size)
end
sd # => 4.6276072940465225

puts by_len.select { |n, _| n > 12  }
           .map { |n, ms| "%d => %s (%d)" % [n, ms.sort.join(' '), ms.size] }

13 => absolute_path activate_spec configuration const_missing count_objects default_proc= each_filename inplace_mode= insert_output instance_eval instance_exec pre_uninstall public_method read_nonblock set_backtrace win_platform? (16)
14 => add_trace_func all_load_paths close_on_exec= close_on_exec? collect_concat compile_option configuration= const_defined? default_bindir each_codepoint force_encoding initialize_dup locale_charmap named_captures post_uninstall public_methods readable_real? set_trace_func sid_available? suffix_pattern writable_real? write_nonblock (22)
15 => class_variables compile_option= default_sources each_with_index fixed_encoding? garbage_collect grant_privilege instance_method latest_spec_for local_variables marshal_version method_defined? pre_reset_hooks private_methods public_constant readagain_bytes search_convpath singleton_class source_encoding source_location unresolved_deps valid_encoding? world_readable? world_writable? (24)
16 => change_privilege default_external default_internal define_finalizer each_with_object executable_real? global_variables included_modules initialize_clone instance_methods load_env_plugins post_build_hooks post_reset_hooks private_constant re_exchangeable? require_relative (16)
17 => ascii_compatible? default_external= default_internal= external_encoding incomplete_input? internal_encoding latest_load_paths load_plugin_files pre_install_hooks primitive_convert primitive_errinfo promote_load_path protected_methods required_location singleton_methods (15)
18 => abort_on_exception class_variable_get class_variable_set instance_variables latest_version_for location_of_caller post_install_hooks relative_path_from undefine_finalizer (9)
19 => abort_on_exception= compare_by_identity default_exec_format pre_uninstall_hooks public_class_method respond_to_missing? (6)
20 => asciicompat_encoding compare_by_identity? destination_encoding post_uninstall_hooks private_class_method repeated_combination repeated_permutation source_encoding_name (8)
21 => default_rubygems_dirs instance_variable_get instance_variable_set remove_class_variable report_activate_error (5)
22 => load_path_insert_index public_instance_method public_method_defined? singleton_method_added (4)
23 => class_variable_defined? define_singleton_method latest_rubygems_version private_method_defined? public_instance_methods (5)
24 => private_instance_methods (1)
25 => destination_encoding_name ensure_gem_subdirectories protected_method_defined? (3)
26 => instance_variable_defined? protected_instance_methods (2)
29 => default_user_source_cache_dir (1)
31 => default_system_source_cache_dir (1)

by_begin = methods.group_by do |m|
  case m[0]
  when 'a'..'z' then m[0]
  when 'A'..'Z' then 'A-Z'
  else 'Sym'
  end
end.sort

x, data = by_begin.map { |s, m| [s, m.size] }.transpose
y = 0.step(90, 10).to_a

puts Gchart.bar(:data => data,
             :axis_with_labels => 'x,y',
             :axis_labels => [x, y],
             :size => '600x400',
             :bar_width_and_spacing => 17,
             :title => 'Methods by Beginning Character Type',
             :bg => 'efefdd',
             )

#>> http://chart.apis.google.com/chart?chxl=0:|A-Z|Sym|a|b|c|d|e|f|g|h|i|j|k|l|m|n|o|p|q|r|s|t|u|v|w|y|z|1:|0|10|20|30|40|50|60|70|80|90&chxt=x,y&chbh=17&chf=bg,s,efefdd&chd=s:DSYKtbkUUEUADWUJFlBo9ZRDJBB&chtt=Methods+by+Beginning+Character+Type&cht=bvs&chs=600x400&chxr=0,7,120

puts by_begin.select { |c, ms| %w(s c r A-Z Sym).include?(c) }
             .map { |c, ms| "%s => %s (%d)\n\n" % [c, ms.sort.join(' '), ms.size] }

A-Z => Array Complex Float Integer Pathname Rational String (7)

Sym => ! != !~ % & * ** + +@ - -@ / < << <= <=> == === =~ > >= >> [] []= ^ __callee__ __id__ __method__ __send__ _dump _id2ref _load ` | ~ (35)

c => cache cache_dir cache_gem call caller capitalize capitalize! captures casecmp casefold? catch cbrt ceil center change_privilege chardev? chars chdir children chmod chomp chomp! chop chop! chown chr chroot chunk class class_eval class_exec class_variable_defined? class_variable_get class_variable_set class_variables cleanpath clear clear_paths clone close close_on_exec= close_on_exec? close_read close_write closed? codepoints coerce collect collect! collect_concat combination compact compact! compare_by_identity compare_by_identity? compatible? compile compile_file compile_option compile_option= concat config_file configuration configuration= conj conjugate const_defined? const_get const_missing const_set constants convert convpath copy_stream coredump? cos cosh count count_objects cover? crypt cstime cstime= ctime current curry cutime cutime= cycle (89)

r => raise rand rassoc rationalize rdev rdev_major rdev_minor re_exchange re_exchangeable? read read_binary read_nonblock readable? readable_real? readagain_bytes readbyte readchar readline readlines readlink readpartial real real? realdirpath realpath reason receiver rect rectangular reduce refresh regexp rehash reject reject! relative? relative_path_from remainder remove_class_variable rename reopen repeated_combination repeated_permutation replace replacement replacement= replicate report report_activate_error require require_relative required_location requirement requirement= respond_to? respond_to_missing? restore result resume reverse reverse! reverse_each rewind rid rindex rjust rmdir rmtree root? rotate rotate! round rpartition rstrip rstrip! ruby ruby_engine ruby_version run (79)

s => safe_level sample saturday? scan search_convpath searcher sec seed seek select select! send set_backtrace set_encoding set_trace_func setbyte setegid seteuid setgid setgid? setpgid setpgrp setpriority setregid setresgid setresuid setreuid setrgid setrlimit setruid setsid setuid setuid? shift shuffle shuffle! sid_available? signaled? signm signo sin singleton_class singleton_method_added singleton_methods sinh size size? skip skip= skip_during sleep slice slice! slice_before socket? sort sort! sort_by sort_by! source source_encoding source_encoding_name source_index source_location sources sources= spawn spec spec= split sprintf sqrt squeeze squeeze! srand start start_with? stat status step sticky? stime stime= stop stop? stopped? stopsig store stress stress= strftime string strip strip! sub sub! sub_ext subsec succ succ! success? suffix_pattern suffixes sum sunday? superclass swapcase swapcase! switch symlink symlink? sync sync= synchronize syscall sysopen sysread sysseek system syswrite (120)

by_end = methods.group_by { |m| m.match /[!?=]$/; $& }

x, data = by_end.map { |s, m| ["#{s}(#{m.size})", m.size] }.transpose
puts Gchart.pie(:data => data,
             :labels => x,
             :size => '500x320',
             :title => 'End Character Types',
             :bg => 'efefdd',
             )

#>> http://chart.apis.google.com/chart?chf=bg,s,efefdd&chd=s:9JDC&chl=%28763%29|%3F%28116%29|%3D%2843%29|%21%2834%29&chtt=End+Character+Types&cht=p&chs=500x320&chxr=0,763,763

puts by_end.reject { |t, ms| t.nil? }
           .map { |t, ms| "%s => %s (%d)\n\n" % [t, ms.sort.join(' '), ms.size] }

? => absolute? alive? all? any? ascii_compatible? ascii_only? autoclose? autoload? available? between? binmode? block_given? blockdev? casefold? chardev? class_variable_defined? close_on_exec? closed? compare_by_identity? compatible? const_defined? coredump? cover? directory? dst? dummy? empty? enabled? enclosed? end_with? eof? eql? equal? even? exclude_end? executable? executable_real? exist? exists? exited? file? finite? fixed_encoding? fnmatch? friday? frozen? gmt? grpowned? has_key? has_value? identical? include? incomplete_input? infinite? instance_of? instance_variable_defined? integer? is_a? iterator? key? kind_of? lambda? loaded_path? locked? member? method_defined? monday? mountpoint? nan? nil? none? nonzero? odd? one? owned? pipe? private_method_defined? protected_method_defined? public_method_defined? re_exchangeable? readable? readable_real? real? relative? respond_to? respond_to_missing? root? saturday? setgid? setuid? sid_available? signaled? size? socket? start_with? sticky? stop? stopped? success? sunday? symlink? tainted? thursday? tty? tuesday? untrusted? utc? valid_encoding? value? wednesday? win_platform? world_readable? world_writable? writable? writable_real? zero? (116)

= => != <= == === >= []= abort_on_exception= autoclose= close_on_exec= compile_option= configuration= cstime= cutime= default= default_external= default_internal= default_proc= egid= eid= euid= exit_code= file_path= gid= groups= host= inplace_mode= lineno= maxgroups= name= paths= platforms= pos= priority= replacement= requirement= skip= sources= spec= stime= stress= sync= uid= utime= (43)

! => ! capitalize! chomp! chop! collect! compact! delete! downcase! encode! exit! flatten! gsub! lstrip! map! merge! next! reject! reverse! rotate! rstrip! select! shuffle! slice! sort! sort_by! squeeze! strip! sub! succ! swapcase! tr! tr_s! uniq! upcase! (34)

File.methods(false).select { |m| m.to_s.end_with?('?') }.uniq.size # => 26

require "gchart"

by_sep= methods.group_by { |m| "#{m}".scan(/[^_]+/).size }.sort

x, data = by_sep.map { |n, m| [[n,m.size], m.size] }.transpose
x = x.map { |n,s| %w(one\ word two\ words three\ words four\ words five\ words)[n-1] + "(#{s})" }

puts Gchart.pie(:data => data,
             :labels => x,
             :size => '500x320',
             :title => 'Words in a Method Name',
             :bg => 'efefdd',
             )

#>> http://chart.apis.google.com/chart?chf=bg,s,efefdd&chd=s:9UEAA&chl=one+word%28675%29|two+words%28225%29|three+words%2853%29|four+words%281%29|five+words%282%29&chtt=Words+in+a+Method+Name&cht=p&chs=500x320&chxr=0,675,675

puts by_sep.select { |n, ms| n > 2 }
           .map { |t, ms| "%s => %s (%d)\n\n" % [t, ms.sort.join(' '), ms.size] }

3 => abort_on_exception abort_on_exception= add_trace_func all_load_paths class_variable_defined? class_variable_get class_variable_set close_on_exec= close_on_exec? compare_by_identity compare_by_identity? default_exec_format default_rubygems_dirs define_singleton_method destination_encoding_name each_with_index each_with_object ensure_gem_subdirectories instance_variable_defined? instance_variable_get instance_variable_set latest_load_paths latest_rubygems_version latest_spec_for latest_version_for load_env_plugins load_plugin_files location_of_caller post_build_hooks post_install_hooks post_reset_hooks post_uninstall_hooks pre_install_hooks pre_reset_hooks pre_uninstall_hooks private_class_method private_instance_methods private_method_defined? promote_load_path protected_instance_methods protected_method_defined? public_class_method public_instance_method public_instance_methods public_method_defined? relative_path_from remove_class_variable report_activate_error respond_to_missing? set_trace_func singleton_method_added source_encoding_name to_write_io (53)

4 => load_path_insert_index (1)

5 => default_system_source_cache_dir default_user_source_cache_dir (2)

by_sep.detect { |n, ms| n == 3 }.last
      .tap { |ms| break ms.map(&:size).inject(:+) / ms.size.to_f } # => 19.15

by_word = methods.flat_map { |m| "#{m}".scan(/[^_=!?~%&*<^@\[\]+\/-]+/) }
                 .inject(Hash.new(0)) { |h, x| h[x] +=1; h }
                 .select { |k, v| v >= 8 }.sort_by { |k,v| -v }


x, data = by_word.map { |k, v| ["#{k}(#{v})", v] }.transpose

puts Gchart.pie(:data => data,
             :labels => x,
             :size => '500x320',
             :title => 'Words used in Methods',
             :bg => 'efefdd',
             )


#>> http://chart.apis.google.com/chart?chf=bg,s,efefdd&chd=s:993ssppllffbb&chl=each%2818%29|to%2818%29|default%2816%29|method%2813%29|instance%2813%29|encoding%2812%29|path%2812%29|load%2811%29|class%2811%29|post%289%29|methods%289%29|public%288%29|by%288%29&chtt=Words+used+in+Methods&cht=p&chs=500x320&chxr=0,18,18

puts methods.map { |m| "#{m}".scan(/[^_=!?~%&*<^@\[\]+\/-]+/) << m }
            .group_by { |ws| ws.any?{ |w| w.match(/^(each|to)$/) }; $& }
            .reject { |k, v| k.nil? }
            .map { |k, v| "%s => %s\n\n" % [k, v.map(&:last)] }

to => [:to_s, :to_i, :to_f, :to_r, :to_a, :to_proc, :to_path, :to_io, :to_write_io, :to_hash, :to_ary, :to_int, :to_c, :to_str, :to_sym, :respond_to?, :respond_to_missing?, :to_enum]

each => [:each, :each_with_index, :each_with_object, :each_object, :each_line, :each_byte, :each_char, :each_codepoint, :each_pair, :each_value, :each_key, :each_index, :reverse_each, :each_entry, :each_slice, :each_cons, :each_filename, :each_child]

methods = Module.constants.flat_map do |c|
  next [] if c == :Gem
  k = Module.const_get(c)
  k.methods(false) + k.instance_methods(false) rescue []
end.reject { |m| "#{m}".start_with? '_deprecated' }.sort_by { |m| -m.size }

methods.size # => 1349
methods = methods.uniq
methods.size # => 753