facebookincubator / cinder
Unit Size

The distribution of size of units (measured in lines of code).

Intro
  • Unit size measurements show the distribution of size of units of code (methods, functions...).
  • Units are classified in four categories based on their size (lines of code): 1-20 (small units), 20-50 (medium size units), 51-100 (long units), 101+ (very long units).
  • You should aim at keeping units small (< 20 lines). Long units may become "bloaters", code that have increased to such gargantuan proportions that they are hard to work with.
Learn more...
Unit Size Overall
  • There are 23,800 units with 241,871 lines of code in units (31.2% of code).
    • 100 very long units (19,886 lines of code)
    • 413 long units (27,223 lines of code)
    • 2,208 medium size units (67,687 lines of code)
    • 3,536 small units (51,682 lines of code)
    • 17,543 very small units (75,393 lines of code)
8% | 11% | 27% | 21% | 31%
Legend:
101+
51-100
21-50
11-20
1-10
Unit Size per Extension
101+
51-100
21-50
11-20
1-10
py5% | 9% | 27% | 22% | 35%
cpp17% | 15% | 27% | 19% | 19%
c12% | 19% | 37% | 19% | 11%
h26% | 2% | 19% | 18% | 34%
inc0% | 21% | 39% | 4% | 34%
js0% | 0% | 28% | 37% | 33%
m0% | 0% | 0% | 73% | 26%
pyi0% | 0% | 0% | 25% | 75%
Unit Size per Logical Component
primary logical decomposition
101+
51-100
21-50
11-20
1-10
Lib4% | 8% | 28% | 22% | 36%
Jit21% | 16% | 28% | 15% | 17%
Objects72% | 3% | 11% | 6% | 5%
Tools7% | 14% | 26% | 21% | 29%
Modules17% | 22% | 32% | 13% | 12%
Python10% | 15% | 38% | 27% | 8%
StrictModules4% | 7% | 20% | 30% | 37%
ROOT27% | 33% | 24% | 9% | 5%
PC11% | 18% | 41% | 16% | 12%
Mac29% | 34% | 18% | 7% | 10%
Parser0% | 10% | 26% | 33% | 29%
Doc0% | 10% | 29% | 19% | 39%
RuntimeTests0% | 27% | 37% | 12% | 22%
Programs0% | 8% | 40% | 35% | 15%
Experiments0% | 0% | 25% | 20% | 53%
Include0% | 0% | 40% | 22% | 37%
PCbuild0% | 0% | 35% | 49% | 15%
Misc0% | 0% | 0% | 0% | 100%
CinderVM0% | 0% | 0% | 0% | 100%
Alternative Visuals
Longest Units
Top 50 longest units
Unit# linesMcCabe index# params
2068 343 1
1990 1836 1
601 169 4
532 2 2
430 157 1
330 168 1
317 56 5
315 125 1
290 100 0
267 10 0
266 145 2
253 6 1
224 10 1
224 3 4
219 27 5
218 50 1
208 39 2
207 41 1
202 35 2
197 10 1
197 134 1
193 86 5
193 58 2
190 45 2
186 1 1
185 74 1
184 49 1
178 15 0
175 45 2
174 49 3
171 6 0
167 62 20
167 24 2
164 24 1
163 39 0
163 4 0
158 27 1
148 28 3
146 65 0
145 133 0
143 52 2
142 42 1
142 132 1
141 73 1
140 38 1
140 23 1
139 39 0
137 37 7
137 27 7
135 28 1