Places in code with 6 or more lines that are exactly the same.
Intro
- For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
- Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
- You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.
- To learn more about duplications and techniques for eliminating duplication, Sokrates recommends the following resources:
- Avoid Repetition, MartinFlower.com (IEEE Software article)
- Refactoring duplicated code, sourcemaking.com
- Beck Design Rules, MartinFowler.com
- DRY (Don't Repeat Yourself) Principle, Wikipedia
- The Cut-and-Paste Programming Software Development Anti-Pattern, sourcemaking.com
- Code Smells / Duplicated Code, Jeff Atwood, codinghorror.com:
- "Duplicated code is the bane of software development. Stamp out duplication whenever possible. You should always be on the lookout for more subtle cases of near-duplication, too. Don't Repeat Yourself!"
- Reducing Coupling, MartinFlower.com (IEEE Software article):
- "There are several ways to describe coupling, but it boils down to this: If changing one module in a program requires changing another module, then coupling exists. ... Duplication always implies coupling, because changing one piece of duplicate code implies changing the other."
Duplication Overall
- 53% duplication:
- 63,195 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 33,659 duplicated lines
- 10,633 duplicates
Duplication per Extension
Duplication per Component (primary)
Longest Duplicates
The list of 20 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 192 | x 2 | Sources/Core/Microsoft.S...rocessing/Operators/AfaSources/Core/Microsoft.S...rocessing/Operators/Afa |  CompiledGroupedAfaPipe_MultiEventList.csCompiledPartitionedAfaPipe_MultiEvent... |
203:534 (55%)199:530 (53%) | view |
| 182 | x 2 | Sources/Core/Microsoft.StreamProcessing/AggregatesSources/Core/Microsoft.StreamProcessing/Aggregates | AggregateFunctionsTemplate.csAggregateFunctionsTemplate.cs |
3198:3560 (7%)3770:4132 (7%) | view |
| 171 | x 2 | Sources/Core/Microsoft.S...rocessing/Operators/AfaSources/Core/Microsoft.S...rocessing/Operators/Afa | CompiledGroupedAfaPipe_EventList.csCompiledPartitionedAfaPipe_EventList.cs |
63:355 (72%)60:353 (68%) | view |
| 160 | x 2 | Sources/Core/Microsoft.S...essing/Ingress/TemporalSources/Core/Microsoft.S...essing/Ingress/Temporal | TemporalIngressSubscription.csTemporalIngressSubscription.cs |
3682:3980 (3%)4176:4474 (3%) | view |
| 156 | x 2 | Sources/Core/Microsoft.StreamProcessing/AggregatesSources/Core/Microsoft.StreamProcessing/Aggregates | AggregateFunctionsTemplate.csAggregateFunctionsTemplate.cs |
2689:2999 (6%)3770:4080 (6%) | view |
| 156 | x 2 | Sources/Core/Microsoft.StreamProcessing/AggregatesSources/Core/Microsoft.StreamProcessing/Aggregates | AggregateFunctionsTemplate.csAggregateFunctionsTemplate.cs |
2689:2999 (6%)3198:3508 (6%) | view |
| 141 | x 2 | Sources/Core/Microsoft.S.../SnapshotWindow/HoppingSources/Core/Microsoft.S.../SnapshotWindow/Sliding | SnapshotWindowHoppingPipe.csSnapshotWindowSlidingPipe.cs |
106:353 (60%)105:352 (60%) | view |
| 132 | x 2 | Sources/Core/Microsoft.StreamProcessing/AggregatesSources/Core/Microsoft.StreamProcessing/Aggregates | AggregateFunctionsTemplate.csAggregateFunctionsTemplate.cs |
2239:2501 (5%)3770:4032 (5%) | view |
| 132 | x 2 | Sources/Core/Microsoft.StreamProcessing/AggregatesSources/Core/Microsoft.StreamProcessing/Aggregates | AggregateFunctionsTemplate.csAggregateFunctionsTemplate.cs |
2239:2501 (5%)2689:2951 (5%) | view |
| 132 | x 2 | Sources/Core/Microsoft.StreamProcessing/AggregatesSources/Core/Microsoft.StreamProcessing/Aggregates | AggregateFunctionsTemplate.csAggregateFunctionsTemplate.cs |
2239:2501 (5%)3198:3460 (5%) | view |
| 131 | x 2 | Sources/Core/Microsoft.S...essing/Ingress/TemporalSources/Core/Microsoft.S...essing/Ingress/Temporal | TemporalIngressSubscription.csTemporalIngressSubscription.cs |
258:492 (2%)641:875 (2%) | view |
| 121 | x 2 | Sources/Core/Microsoft.S.../SnapshotWindow/HoppingSources/Core/Microsoft.S.../SnapshotWindow/Sliding | SnapshotWindowHoppingPipeSimple.csSnapshotWindowSlidingPipeSimple.cs |
90:305 (66%)89:304 (67%) | view |
| 110 | x 2 | Sources/Core/Microsoft.StreamProcessing/AggregatesSources/Core/Microsoft.StreamProcessing/Aggregates | AggregateFunctionsTemplate.csAggregateFunctionsTemplate.cs |
1844:2062 (4%)3198:3416 (4%) | view |
| 110 | x 2 | Sources/Core/Microsoft.StreamProcessing/AggregatesSources/Core/Microsoft.StreamProcessing/Aggregates | AggregateFunctionsTemplate.csAggregateFunctionsTemplate.cs |
1844:2062 (4%)2689:2907 (4%) | view |
| 110 | x 2 | Sources/Core/Microsoft.StreamProcessing/AggregatesSources/Core/Microsoft.StreamProcessing/Aggregates | AggregateFunctionsTemplate.csAggregateFunctionsTemplate.cs |
1844:2062 (4%)2239:2457 (4%) | view |
| 110 | x 2 | Sources/Core/Microsoft.StreamProcessing/AggregatesSources/Core/Microsoft.StreamProcessing/Aggregates | AggregateFunctionsTemplate.csAggregateFunctionsTemplate.cs |
1844:2062 (4%)3770:3988 (4%) | view |
| 107 | x 2 | Sources/Core/Microsoft.S...essing/Ingress/TemporalSources/Core/Microsoft.S...essing/Ingress/Temporal | TemporalIngressSubscription.csTemporalIngressSubscription.cs |
5147:5341 (2%)5464:5658 (2%) | view |
| 107 | x 2 | Sources/Core/Microsoft.S...essing/Ingress/TemporalSources/Core/Microsoft.S...essing/Ingress/Temporal | TemporalIngressSubscription.csTemporalIngressSubscription.cs |
4808:5003 (2%)5815:6010 (2%) | view |
| 107 | x 2 | Sources/Core/Microsoft.S...essing/Ingress/TemporalSources/Core/Microsoft.S...essing/Ingress/Temporal | TemporalIngressSubscription.csTemporalIngressSubscription.cs |
3822:4017 (2%)5183:5378 (2%) | view |
| 105 | x 2 | Sources/Core/Microsoft.StreamProcessing/IngressSources/Core/Microsoft.StreamProcessing/Ingress | SubscriptionBase.csSubscriptionBase.cs |
1395:1660 (10%)2016:2281 (10%) | view |
Duplicated Units
The list of top 20 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 88 | x 2 | Sources/Core/Microsoft.S...essing/Ingress/TemporalSources/Core/Microsoft.S...essing/Ingress/Temporal | TemporalIngressSubscription.csTemporalIngressSubscription.cs |
3693:3805 4187:4299 | view |
| 82 | x 2 | Sources/Core/Microsoft.S...essing/Ingress/TemporalSources/Core/Microsoft.S...essing/Ingress/Temporal | TemporalIngressSubscription.csTemporalIngressSubscription.cs |
6110:6214 6510:6614 | view |
| 77 | x 2 | Sources/Core/Microsoft.S...essing/Ingress/TemporalSources/Core/Microsoft.S...essing/Ingress/Temporal | TemporalIngressSubscription.csTemporalIngressSubscription.cs |
4015:4108 4504:4597 | view |
| 69 | x 2 | Sources/Core/Microsoft.S.../SnapshotWindow/HoppingSources/Core/Microsoft.S.../SnapshotWindow/Sliding | PartitionedSnapshotWindowHoppingPipe.csPartitionedSnapshotWindowSlidingPipe.cs |
319:406 317:404 | view |
| 67 | x 2 | Sources/Core/Microsoft.S.../SnapshotWindow/HoppingSources/Core/Microsoft.S.../SnapshotWindow/Sliding | SnapshotWindowHoppingPipe.csSnapshotWindowSlidingPipe.cs |
257:342 256:341 | view |
| 58 | x 2 | Sources/Core/Microsoft.S...essing/Ingress/TemporalSources/Core/Microsoft.S...essing/Ingress/Temporal | TemporalIngressSubscription.csTemporalIngressSubscription.cs |
1033:1106 2832:2905 | view |
| 58 | x 2 | Sources/Core/Microsoft.S...essing/Ingress/TemporalSources/Core/Microsoft.S...essing/Ingress/Temporal | TemporalIngressSubscription.csTemporalIngressSubscription.cs |
2237:2310 2536:2609 | view |
| 58 | x 2 | Sources/Core/Microsoft.S.../SnapshotWindow/HoppingSources/Core/Microsoft.S.../SnapshotWindow/Sliding | SnapshotWindowHoppingPipeSimple.csSnapshotWindowSlidingPipeSimple.cs |
206:277 205:276 | view |
| 57 | x 2 | Sources/Core/Microsoft.S...essing/Ingress/TemporalSources/Core/Microsoft.S...essing/Ingress/Temporal | TemporalIngressSubscription.csTemporalIngressSubscription.cs |
270:342 653:725 | view |
| 56 | x 2 | Sources/Core/Microsoft.S...perators/EquiJoin/BasicSources/Core/Microsoft.S...perators/EquiJoin/Basic | PartitionedEquiJoinPipe.csPartitionedEquiJoinPipeCompound.cs |
591:652 595:656 | view |
| 55 | x 2 | Sources/Core/Microsoft.S...ocessing/Operators/ClipSources/Core/Microsoft.S...rators/LeftAntiSemiJoin | ClipJoinPipe.csLeftAntiSemiJoinPipe.cs |
86:151 130:197 | view |
| 54 | x 2 | Sources/Core/Microsoft.S...perators/EquiJoin/BasicSources/Core/Microsoft.S...perators/EquiJoin/Basic | PartitionedEquiJoinPipe.csPartitionedEquiJoinPipeCompound.cs |
459:522 463:526 | view |
| 54 | x 2 | Sources/Core/Microsoft.S...perators/EquiJoin/BasicSources/Core/Microsoft.S...perators/EquiJoin/Basic | PartitionedEquiJoinPipe.csPartitionedEquiJoinPipeCompound.cs |
525:588 529:592 | view |
| 49 | x 2 | Sources/Core/Microsoft.S...essing/Ingress/TemporalSources/Core/Microsoft.S...essing/Ingress/Temporal | TemporalIngressSubscription.csTemporalIngressSubscription.cs |
525:586 903:964 | view |
| 44 | x 2 | Sources/Core/Microsoft.S...essing/Ingress/TemporalSources/Core/Microsoft.S...essing/Ingress/Temporal | TemporalIngressSubscription.csTemporalIngressSubscription.cs |
6453:6497 7473:7517 | view |
| 41 | x 2 | Sources/Core/Microsoft.S...ocessing/Operators/ClipSources/Core/Microsoft.S...perators/EquiJoin/Basic | PartitionedClipJoinPipe.csPartitionedEquiJoinPipe.cs |
93:137 150:195 | view |
| 41 | x 2 | Sources/Core/Microsoft.S...tors/EquiJoin/StartEdgeSources/Core/Microsoft.S...rators/LeftAntiSemiJoin | PartitionedStartEdgeEquiJoinPipe.csPartitionedLeftAntiSemiJoinPipe.cs |
125:170 117:162 | view |
| 39 | x 2 | Sources/Core/Microsoft.StreamProcessing/IngressSources/Core/Microsoft.StreamProcessing/Ingress | SubscriptionBase.csSubscriptionBase.cs |
1330:1373 1951:1994 | view |
| 39 | x 2 | Sources/Core/Microsoft.S...essing/Ingress/TemporalSources/Core/Microsoft.S...essing/Ingress/Temporal | TemporalIngressSubscription.csTemporalIngressSubscription.cs |
2483:2522 3265:3304 | view |
| 37 | x 2 | Sources/Core/Microsoft.S...essing/Ingress/TemporalSources/Core/Microsoft.S...essing/Ingress/Temporal | TemporalIngressSubscription.csTemporalIngressSubscription.cs |
6848:6885 7706:7743 | view |