firebase / quickstart-ios
Duplication

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.
Learn more...
Duplication Overall
  • 16% duplication:
    • 13,374 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
    • 2,201 duplicated lines
  • 254 duplicates
system16% (2,201 lines)
Duplication per Extension
swift16% (1,539 lines)
m16% (650 lines)
h4% (12 lines)
Duplication per Component (primary)
authentication19% (823 lines)
firestore21% (345 lines)
database15% (327 lines)
config29% (158 lines)
crashlytics36% (113 lines)
performance9% (83 lines)
functions12% (67 lines)
analytics6% (55 lines)
inappmessaging35% (44 lines)
storage12% (41 lines)
appdistribution41% (30 lines)
dynamiclinks4% (30 lines)
messaging9% (25 lines)
installations15% (22 lines)
swiftui10% (13 lines)
template26% (10 lines)
abtesting2% (8 lines)
admob3% (7 lines)
scripts0% (0 lines)

Duplication Between Components (50+ lines)

G authentication authentication database database authentication--database 172 config config authentication--config 104 performance performance database--performance 60 analytics analytics analytics--config 91 storage storage performance--storage 66 appdistribution appdistribution appdistribution--config 60 dynamiclinks dynamiclinks inappmessaging inappmessaging dynamiclinks--inappmessaging 55 messaging messaging messaging--storage 50 crashlytics crashlytics crashlytics--database 50

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Longest Duplicates
The list of 20 longest duplicates.
See data for all 254 duplicates...
Size#FoldersFilesLinesCode
53 x 2 firestore/FirestoreExample
firestore/FirestoreSwiftUIExample/Extensions
Restaurant.swift
Restaurant+Extension.swift
 41:94 (59%)
27:80 (76%)
 view
44 x 2 database/DatabaseExample...aseExample/Shared/Views
database/DatabaseExample...aseExample/Shared/Views
LoginView.swift
SignUpView.swift
 28:81 (45%)
27:80 (45%)
 view
38 x 2 config/ConfigExample
config/ConfigExample
Extensions.swift
RemoteConfigView.swift
 17:75 (76%)
185:243 (22%)
 view
34 x 2 authentication/Authentic...Example/ViewControllers
authentication/Authentic...Example/ViewControllers
AccountLinkingViewController.swift
AuthViewController.swift
 474:532 (11%)
284:342 (18%)
 view
26 x 2 crashlytics/LegacyCrashl...CrashlyticsExampleSwift
crashlytics/Shared
ViewController.swift
ReachabililtyHelper.swift
 73:114 (44%)
25:66 (96%)
 view
24 x 2 firestore/FirestoreExample
firestore/FirestoreExample
StarsView.swift
StarsView.swift
 150:183 (11%)
327:360 (11%)
 view
22 x 2 authentication/Authentic...Example/ViewControllers
authentication/LegacyAut...henticationExampleSwift
AuthViewController.swift
MainViewController.swift
 301:332 (12%)
1045:1076 (3%)
 view
22 x 2 authentication/Authentic...Example/ViewControllers
authentication/LegacyAut...henticationExampleSwift
AccountLinkingViewController.swift
MainViewController.swift
 491:522 (7%)
1045:1076 (3%)
 view
21 x 2 authentication/LegacyAut...t/AuthenticationExample
authentication/LegacyAut...t/AuthenticationExample
MainViewController.m
MainViewController.m
 265:290 (2%)
298:323 (2%)
 view
21 x 2 authentication/LegacyAut...t/AuthenticationExample
authentication/LegacyAut...t/AuthenticationExample
MainViewController.m
MainViewController.m
 265:290 (2%)
462:487 (2%)
 view
21 x 2 authentication/LegacyAut...t/AuthenticationExample
authentication/LegacyAut...t/AuthenticationExample
MainViewController.m
MainViewController.m
 298:323 (2%)
462:487 (2%)
 view
18 x 2 authentication/LegacyAut...t/AuthenticationExample
database/DatabaseExample
UIViewController+Alerts.m
UIViewController+Alerts.m
 133:159 (20%)
257:283 (9%)
 view
18 x 2 authentication/Authentic...Example/ViewControllers
authentication/Authentic...Example/ViewControllers
AccountLinkingViewController.swift
AuthViewController.swift
 444:469 (6%)
245:270 (9%)
 view
18 x 2 authentication/Authentic...Example/ViewControllers
authentication/Authentic...Example/ViewControllers
AccountLinkingViewController.swift
AuthViewController.swift
 139:164 (6%)
89:114 (9%)
 view
17 x 2 authentication/LegacyAut...t/AuthenticationExample
authentication/LegacyAut...t/AuthenticationExample
EmailViewController.m
MainViewController.m
 43:62 (14%)
141:160 (2%)
 view
15 x 2 crashlytics/LegacyCrashl...CrashlyticsExampleSwift
crashlytics/Shared
ViewController.swift
CrashlyticsSwiftUIExampleApp.swift
 46:60 (25%)
29:43 (35%)
 view
14 x 2 dynamiclinks/DynamicLinksExample
inappmessaging/InAppMessagingExample
AppDelegate.m
AppDelegate.m
 33:53 (18%)
33:50 (46%)
 view
14 x 2 firestore/FirestoreExample
firestore/FirestoreSwiftUIExample/Extensions
RestaurantsTableViewController.swift
Firestore+Extension.swift
 183:197 (5%)
42:56 (27%)
 view
14 x 2 appdistribution/AppDistributionExample
config/ConfigExample
AppDelegate.swift
AppDelegate.swift
 18:37 (100%)
18:38 (87%)
 view
14 x 2 analytics/AnalyticsExample
appdistribution/AppDistributionExample
AppDelegate.swift
AppDelegate.swift
 18:37 (100%)
18:37 (100%)
 view
Duplicated Units
The list of top 8 duplicated units.
See data for all 8 unit duplicates...
Size#FoldersFilesLinesCode
19 x 2 authentication/AuthenticationExampleUITests
authentication/AuthenticationExampleUITests
AuthenticationExampleUITests.swift
AuthenticationExampleUITests.swift
 76:103 
105:133 
 view
14 x 2 crashlytics/LegacyCrashl...CrashlyticsExampleSwift
crashlytics/Shared
ViewController.swift
ReachabililtyHelper.swift
 80:95 
32:47 
 view
11 x 2 crashlytics/LegacyCrashl...CrashlyticsExampleSwift
crashlytics/Shared
ViewController.swift
ReachabililtyHelper.swift
 100:111 
52:63 
 view
7 x 4 appdistribution/AppDistributionExample
authentication/AuthenticationExample
analytics/AnalyticsExample
config/ConfigExample
AppDelegate.swift
AppDelegate.swift
AppDelegate.swift
AppDelegate.swift
 29:38 
49:58 
29:38 
30:39 
 view
6 x 2 storage/StorageExampleSwift
performance/PerformanceExampleSwift
AppDelegate.swift
AppDelegate.swift
 24:33 
24:33 
 view
6 x 4 crashlytics/Shared
abtesting/Shared
database/DatabaseExample.../DatabaseExample/Shared
performance/SwiftUIPerfo...rformanceExample/Shared
UITests.swift
UITests.swift
UITests.swift
UITests.swift
 38:45 
98:105 
85:92 
219:226 
 view
6 x 3 appdistribution/AppDistributionUITests
authentication/AuthenticationExampleUITests
config/ConfigExampleUITests
AppDistributionExampleUITests.swift
AuthenticationExampleUITests.swift
ConfigExampleUITests.swift
 38:45 
230:237 
38:45 
 view
6 x 2 analytics/LegacyAnalytic...AnalyticsExampleUITests
admob/AdMobExampleUITests
AnalyticsExampleUITests.m
AdMobExampleUITests.m
 60:66 
88:94 
 view