History

Tail-call optimization in C is relatively recent (2025)

Open thread

First rank

4

Best rank

3

Last rank

29

Observations

221

First seen

1786362898

Last seen

1786458745

Missing captures

37

Milestones

2

Top is rank 1. Gaps between captures are not reconstructed.

1. Rank 29

   159 points · 136 comments · observed 1786458745

2. Rank 30

   158 points · 136 comments · observed 1786457565

3. Rank 29

   158 points · 136 comments · observed 1786457172

4. Rank 29

   158 points · 136 comments · observed 1786456770

5. Rank 29

   156 points · 136 comments · observed 1786456378

6. Rank 29

   155 points · 136 comments · observed 1786455979

7. Rank 30

   155 points · 136 comments · observed 1786455590

8. Rank 29

   155 points · 136 comments · observed 1786455199

9. Rank 29

   155 points · 136 comments · observed 1786454047

10. Rank 28

    155 points · 136 comments · observed 1786453668

11. Rank 27

    155 points · 136 comments · observed 1786453286

12. Rank 25

    155 points · 136 comments · observed 1786452913

13. Rank 26

    153 points · 136 comments · observed 1786452538

14. Rank 26

    153 points · 136 comments · observed 1786452160

15. Rank 25

    153 points · 136 comments · observed 1786451785

16. Rank 25

    153 points · 136 comments · observed 1786451409

17. Rank 26

    152 points · 136 comments · observed 1786451033

18. Rank 25

    152 points · 136 comments · observed 1786450652

19. Rank 24

    152 points · 136 comments · observed 1786450274

20. Rank 25

    152 points · 136 comments · observed 1786449906

21. Rank 25

    152 points · 136 comments · observed 1786449532

22. Rank 25

    152 points · 136 comments · observed 1786449157

23. Rank 26

    152 points · 136 comments · observed 1786448784

24. Rank 25

    152 points · 136 comments · observed 1786448408

25. Rank 25

    152 points · 135 comments · observed 1786448037

26. Rank 26

    152 points · 135 comments · observed 1786447667

27. Rank 26

    152 points · 135 comments · observed 1786447295

28. Rank 27

    152 points · 135 comments · observed 1786446929

29. Rank 28

    152 points · 135 comments · observed 1786446557

30. Rank 29

    152 points · 135 comments · observed 1786446186

31. Rank 29

    152 points · 135 comments · observed 1786445818

32. Rank 29

    152 points · 135 comments · observed 1786445449

33. Rank 28

    152 points · 135 comments · observed 1786445083

34. Rank 28

    152 points · 135 comments · observed 1786444716

35. Rank 28

    152 points · 135 comments · observed 1786444352

36. Rank 28

    151 points · 135 comments · observed 1786443983

37. Rank 28

    151 points · 135 comments · observed 1786443622

38. Rank 29

    151 points · 135 comments · observed 1786443253

39. Rank 27

    151 points · 135 comments · observed 1786442884

40. Rank 28

    150 points · 135 comments · observed 1786442514

41. Rank 26

    150 points · 135 comments · observed 1786442151

42. Rank 26

    150 points · 135 comments · observed 1786441783

43. Rank 26

    150 points · 135 comments · observed 1786441418

44. Rank 26

    150 points · 135 comments · observed 1786441050

45. Rank 25

    150 points · 135 comments · observed 1786440681

46. Rank 25

    148 points · 135 comments · observed 1786440325

47. Rank 25

    148 points · 134 comments · observed 1786439960

48. Rank 25

    147 points · 134 comments · observed 1786439597

49. Rank 25

    147 points · 133 comments · observed 1786439240

50. Rank 25

    147 points · 131 comments · observed 1786438876

51. Rank 24

    146 points · 131 comments · observed 1786438512

52. Rank 24

    146 points · 131 comments · observed 1786438148

53. Rank 24

    145 points · 131 comments · observed 1786437788

54. Rank 24

    144 points · 131 comments · observed 1786437427

55. Rank 23

    144 points · 131 comments · observed 1786437070

56. Rank 24

    143 points · 131 comments · observed 1786436713

57. Rank 24

    143 points · 131 comments · observed 1786436353

58. Rank 24

    143 points · 131 comments · observed 1786435991

59. Rank 23

    143 points · 131 comments · observed 1786435631

60. Rank 23

    143 points · 130 comments · observed 1786435264

61. Rank 22

    143 points · 130 comments · observed 1786434901

62. Rank 22

    143 points · 129 comments · observed 1786434540

63. Rank 22

    143 points · 129 comments · observed 1786434184

64. Rank 22

    143 points · 129 comments · observed 1786433824

65. Rank 23

    143 points · 129 comments · observed 1786433457

66. Rank 23

    142 points · 129 comments · observed 1786433093

67. Rank 22

    142 points · 128 comments · observed 1786432733

68. Rank 23

    141 points · 128 comments · observed 1786432375

69. Rank 23

    140 points · 128 comments · observed 1786432014

70. Rank 23

    140 points · 128 comments · observed 1786431640

71. Rank 21

    139 points · 127 comments · observed 1786431274

72. Rank 22

    139 points · 126 comments · observed 1786430912

73. Rank 22

    139 points · 126 comments · observed 1786430547

74. Rank 26

    137 points · 126 comments · observed 1786430183

75. Rank 30

    133 points · 124 comments · observed 1786419358

76. Rank 30

    131 points · 123 comments · observed 1786418277

77. Rank 30

    131 points · 123 comments · observed 1786417915

78. Rank 30

    129 points · 123 comments · observed 1786416827

79. Rank 30

    129 points · 123 comments · observed 1786416462

80. Rank 29

    128 points · 123 comments · observed 1786416101

81. Rank 29

    128 points · 123 comments · observed 1786415738

82. Rank 28

    126 points · 123 comments · observed 1786415374

83. Rank 28

    126 points · 123 comments · observed 1786415016

84. Rank 27

    126 points · 123 comments · observed 1786414652

85. Rank 27

    126 points · 124 comments · observed 1786414293

86. Rank 27

    126 points · 124 comments · observed 1786413928

87. Rank 27

    123 points · 123 comments · observed 1786413559

88. Rank 27

    123 points · 123 comments · observed 1786413194

89. Rank 27

    123 points · 123 comments · observed 1786412835

90. Rank 27

    122 points · 123 comments · observed 1786412468

91. Rank 27

    122 points · 123 comments · observed 1786412100

92. Rank 27

    121 points · 123 comments · observed 1786411730

93. Rank 27

    121 points · 122 comments · observed 1786411364

94. Rank 29

    120 points · 122 comments · observed 1786410989

95. Rank 29

    120 points · 121 comments · observed 1786410620

96. Rank 27

    120 points · 121 comments · observed 1786410247

97. Rank 27

    119 points · 119 comments · observed 1786409873

98. Rank 26

    119 points · 115 comments · observed 1786409509

99. Rank 26

    119 points · 115 comments · observed 1786409142

100. Rank 27

     118 points · 114 comments · observed 1786408775

101. Rank 27

     118 points · 112 comments · observed 1786408407

102. Rank 26

     117 points · 112 comments · observed 1786408045

103. Rank 26

     117 points · 112 comments · observed 1786407683

104. Rank 28

     115 points · 112 comments · observed 1786407321

105. Rank 27

     115 points · 111 comments · observed 1786406958

106. Rank 27

     114 points · 110 comments · observed 1786406587

107. Rank 26

     114 points · 110 comments · observed 1786406207

108. Rank 26

     113 points · 108 comments · observed 1786405843

109. Rank 26

     113 points · 108 comments · observed 1786405476

110. Rank 26

     113 points · 108 comments · observed 1786405109

111. Rank 25

     113 points · 107 comments · observed 1786404736

112. Rank 23

     113 points · 106 comments · observed 1786404375

113. Rank 24

     112 points · 106 comments · observed 1786404005

114. Rank 24

     112 points · 106 comments · observed 1786403637

115. Rank 23

     112 points · 106 comments · observed 1786403267

116. Rank 23

     111 points · 106 comments · observed 1786402890

117. Rank 23

     111 points · 106 comments · observed 1786402515

118. Rank 22

     111 points · 106 comments · observed 1786402142

119. Rank 22

     110 points · 105 comments · observed 1786401760

120. Rank 23

     110 points · 104 comments · observed 1786401383

121. Rank 23

     110 points · 104 comments · observed 1786400998

122. Rank 24

     110 points · 103 comments · observed 1786400614

123. Rank 24

     110 points · 102 comments · observed 1786400230

124. Rank 23

     110 points · 102 comments · observed 1786399850

125. Rank 24

     108 points · 101 comments · observed 1786399468

126. Rank 24

     108 points · 100 comments · observed 1786399084

127. Rank 23

     105 points · 99 comments · observed 1786398708

128. Rank 24

     105 points · 98 comments · observed 1786398328

129. Rank 23

     105 points · 97 comments · observed 1786397948

130. Rank 22

     105 points · 97 comments · observed 1786397567

131. Rank 22

     105 points · 97 comments · observed 1786397185

132. Rank 22

     103 points · 97 comments · observed 1786396812

133. Rank 20

     102 points · 96 comments · observed 1786396427

134. Rank 22

     102 points · 96 comments · observed 1786396042

135. Rank 23

     102 points · 96 comments · observed 1786395644

136. Rank 23

     102 points · 96 comments · observed 1786395257

137. Rank 24

     102 points · 96 comments · observed 1786394880

138. Rank 21

     102 points · 94 comments · observed 1786394501

139. Rank 20

     102 points · 93 comments · observed 1786394116

140. Rank 20

     102 points · 93 comments · observed 1786393737

141. Rank 23

     101 points · 92 comments · observed 1786393357

142. Rank 23

     101 points · 91 comments · observed 1786392984

143. Rank 23

     101 points · 90 comments · observed 1786392606

144. Rank 21

     101 points · 89 comments · observed 1786392233

145. Rank 23

     101 points · 88 comments · observed 1786391848

146. Rank 22

     101 points · 87 comments · observed 1786391462

147. Rank 23

     99 points · 84 comments · observed 1786391075

148. Rank 23

     99 points · 83 comments · observed 1786390695

149. Rank 24

     99 points · 82 comments · observed 1786390313

150. Rank 26

     99 points · 81 comments · observed 1786389932

151. Rank 25

     99 points · 81 comments · observed 1786389552

152. Rank 23

     97 points · 80 comments · observed 1786389170

153. Rank 24

     96 points · 78 comments · observed 1786388787

154. Rank 23

     96 points · 75 comments · observed 1786388382

155. Rank 23

     96 points · 75 comments · observed 1786387999

156. Rank 25

     94 points · 74 comments · observed 1786387619

157. Rank 22

     94 points · 74 comments · observed 1786387245

158. Rank 21

     93 points · 68 comments · observed 1786386866

159. Rank 20

     92 points · 65 comments · observed 1786386487

160. Rank 21

     90 points · 65 comments · observed 1786386108

161. Rank 21

     90 points · 62 comments · observed 1786385722

162. Rank 22

     90 points · 62 comments · observed 1786385339

163. Rank 22

     89 points · 62 comments · observed 1786384958

164. Rank 21

     89 points · 61 comments · observed 1786384576

165. Rank 21

     88 points · 61 comments · observed 1786384196

166. Rank 20

     87 points · 60 comments · observed 1786383816

167. Rank 20

     86 points · 59 comments · observed 1786383428

168. Rank 19

     86 points · 58 comments · observed 1786383050

169. Rank 19

     85 points · 58 comments · observed 1786382673

170. Rank 19

     82 points · 53 comments · observed 1786382284

171. Rank 25

     82 points · 53 comments · observed 1786381895

172. Rank 23

     82 points · 52 comments · observed 1786381501

173. Rank 24

     80 points · 52 comments · observed 1786381110

174. Rank 25

     80 points · 51 comments · observed 1786380718

175. Rank 26

     77 points · 49 comments · observed 1786380335

176. Rank 22

     77 points · 48 comments · observed 1786379948

177. Rank 19

     77 points · 48 comments · observed 1786379552

178. Rank 20

     77 points · 47 comments · observed 1786379162

179. Rank 18

     76 points · 45 comments · observed 1786378763

180. Rank 15

     75 points · 45 comments · observed 1786378374

181. Rank 14

     75 points · 45 comments · observed 1786377984

182. Rank 12

     72 points · 40 comments · observed 1786377577

183. Rank 9

     72 points · 37 comments · observed 1786377186

184. Rank 9

     71 points · 37 comments · observed 1786376799

185. Rank 8

     70 points · 37 comments · observed 1786376407

186. Rank 7

     69 points · 36 comments · observed 1786376023

187. Rank 7

     68 points · 35 comments · observed 1786375643

188. Rank 7

     68 points · 34 comments · observed 1786375252

189. Rank 7

     68 points · 34 comments · observed 1786374877

190. Rank 7

     66 points · 33 comments · observed 1786374496

191. Rank 6

     65 points · 33 comments · observed 1786374115

192. Rank 5

     65 points · 29 comments · observed 1786373727

193. Rank 5

     64 points · 29 comments · observed 1786373349

194. Rank 6

     63 points · 29 comments · observed 1786372967

195. Rank 6

     60 points · 29 comments · observed 1786372586

196. Rank 5

     57 points · 28 comments · observed 1786372208

197. Rank 5

     57 points · 28 comments · observed 1786371826

198. Rank 5

     57 points · 27 comments · observed 1786371444

199. Rank 5

     56 points · 27 comments · observed 1786371065

200. Rank 6

     54 points · 25 comments · observed 1786370682

201. Rank 6

     50 points · 22 comments · observed 1786370284

202. Rank 6

     48 points · 19 comments · observed 1786369906

203. Rank 6

     45 points · 17 comments · observed 1786369531

204. Rank 6

     44 points · 16 comments · observed 1786369153

205. Rank 5

     41 points · 14 comments · observed 1786368780

206. Rank 4

     39 points · 14 comments · observed 1786368400

207. Rank 5

     36 points · 13 comments · observed 1786368023

208. Rank 5

     31 points · 12 comments · observed 1786367654

209. Rank 4

     29 points · 12 comments · observed 1786367280

210. Rank 4

     29 points · 11 comments · observed 1786366916

211. Rank 4

     25 points · 10 comments · observed 1786366544

212. Rank 3

     25 points · 8 comments · observed 1786366177

213. Rank 4

     24 points · 6 comments · observed 1786365813

214. Rank 4

     22 points · 5 comments · observed 1786365447

215. Rank 4

     20 points · 5 comments · observed 1786365084

216. Rank 4

     18 points · 4 comments · observed 1786364718

217. Rank 4

     16 points · 2 comments · observed 1786364352

218. Rank 4

     15 points · 0 comments · observed 1786363996

219. Rank 3

     11 points · 0 comments · observed 1786363636

220. Rank 3

     6 points · 0 comments · observed 1786363254

221. Rank 4

     3 points · 0 comments · observed 1786362898

Unofficial Hacker News client; not affiliated with Y Combinator.