There is no royal road to Swift. βEuclid
- Open Source Swift
- Swift Style
- In-Browser Swift Editors
- Quick References
- Great Learning Resources
- Books
- Video
- Swift Community
- Swift Posts
- Closures
- Collections / Sequences / Generators
- Command Line and Swift Scripting
- Concurrency
- Data Structures and Algorithms
- Date Programming
- Design Patterns and AntiPatterns
- Development Paradigms
- Enums and Pattern Matching
- Error Handling
- Extensions
- Functional Programming, Category and Type Theory
- Functional Reactive Programming in Swift
- Generics
- Initializers, Properties, and Dependency Injection
- Interpolability
- Internals
- Language Comparisons and Transitioning to Swift
- Linux Development
- Optionals and Types
- Production Swift and Problem Solving
- Protocols
- Protocol Oriented Programming in Swift 2
- Security
- Server Side Swift
- String Manipulation and Regex
- Swift Language, Open Source, and Opinions
- Testing Swift Code
- Tools
- iOS Programming with Swift
- Interview Questions
- Shoutouts
- Apple Master Github Repository π
- Swift Master Repository βοΈ
- Download Swift π
- Core Libs Unimplemented Parts βοΈ
- Swift Core Libs Foundation Repository βοΈ
- Swift Core Libs Dispatch Repository βοΈ
- Swift CommonMark parsing and rendering library in C βοΈ
- Swift Clang Repositroy βοΈ
- Swift LLDB Repository βοΈ
- Swift Packages βοΈ
- Swift Compiler Crashes βοΈ
- No Single Swift Style π
- Functional Swift Style Guide π
- The Official Swift Language Docs π
- Swift Language Evolution π π
- Other Awesome Lists
- π₯ Awesome Swift Playgrounds π
- π₯ Awesome iOS π
- π₯ Awesome Swift π
- π₯ Another Awesome Swift π
- π₯ Awesome Functional Programming π
- Swift.org π
- Every Operator in Swift π
- That Thing In Swift π
- SwiftDoc π
- iOS Cookies π
- Pure Swift List π
- iOS Good Practices π
- Little Bites of Cocoa π
- Libraries used in the top 100 Apps π
- Fucking Closure Syntax π
- RAC Marbles π
- Swift Knowledge Base π
- Every Single Option and Swift Compiler Flag π
- Useful Swift .gitignores π
- Official Swift Documentation π
- Swift Education Community Repository βοΈ
- iOS Swift Reference βοΈ
- Hacking With Swift π
- A Better way to learn Swift π
- Ray Wenderlich Tutorial Pages π
- Swift Education π
- Play with Swift π
- CS193P: Developing iOS 8 Apps with Swift π
- Realm Roundup: 25 Realm Resources and Tutorials π
- Funcitonal Reactive Programming iOS Learning Resources π
- Learn Core Data π
- Udacity Swift Syntax Course π
- Open Source iOS Apps βοΈ
- Free Books
- Not Free (but still awesome) Swift Books
- Presentations
- All the slides from Swift Summit London 2015 π
- Other Video
- Apps
- Charter Swift Mailing List Client βοΈ
- Blogs
- iOS at Artsy π
- π Objc.io π
- NSBlog with Mike Ash π
- Use Your Loaf π
- Chris Eidhof π
- Ole Begemann π
- Alexandros Salazar π
- Uramio π
- Swift Weekly π
- Erica Sadun π
- Appventure π
- MetalByExample.com π
- NSHipster π
- David Owens π
- The iOS Times π
- Crunchy Development π
- iOS Blog π
- iAchievedIt Blog π
- Coding Explorer Blog π
- 100 Curated iOS Blogs π
- Conferences
- Forums
- Jobs
- Meetups
- Meetup.com Swift Meetups π
- Newsletters
- Podcasts
- Repositories
- Swift @IBM Community Repo π
- @autoclosure, @noescape
- @autoclosure, @inline, @noescape, and @noreturn Keywords π
- How to use @noescape π
- How to use @autoclosure π
- How to use @autoclosure parameter in an async block π
- Currying
- Instance methods are Curried Functions in Swift π
- Closures
- Swift Closures Cheatsheet π
- Functions
- Swift functions Cheetsheet π
- Weak References
- A quick guide to SequenceType π
- Swift Collections π
- Sequences and Generators in Swift π
- Experimenting with Seqs and Generators π
- Sets vs Dictionaries in Swift π
- The Fibonacci SequenceType π
- Truly Lazy Sequences π π
- Using Generators for UITableView Pagination Purposes π
- A Little Respect for AnySequence π
- Swift Sequence Lib βοΈ
- SINQ - Swift Integrated Query βοΈ
- List Comprehension in Swift π
- Collection Indices, Slices, and Generics π
- Generic Collections, SubSequences and Overloading π
- Custom Subscripts in Swift π π
- A better Hashable π
- How arrays are implemented in Swift π π π
- Dictionaries in Swift π
- for-in secrets π
- Replacing Ranges in an Arrayβ π
- Sequence Conformance π
- AnyObject Subscript π
- Swift Scripting π€ βοΈ
- Learn Swift by running Scripts π
- Scripting in Swift is Pretty Awesome! π
- How Swift Scripting was used to make iOS Cookies π
- Writing an Xcode Plugin with Swift π
- Make Command Line Applications with Swiftline π
- Swift Command Line Application Template :pecnil2:
- Basics of GCD π
- Methods of concurrency β GCD, agents, tasks and invocations π
- Code at the end of the queue π
- Actor Model Concurrency in Swift βοΈ
- Coroutines in Swift π
- STM in Swift βοΈ
- NSOperations and NSOperationQueues π
- Threading with Closures π
- Building Responsive and Efficient Apps with GCD π€ πΎ
- An Array implemented in Swift by Mike Ash π
- A Trie π
- A persistent tree using indirect enums π
- Deques, Queues, and Lists in Swift with indirect π
- Linked Lists are really slow π
- Linked Lists, Enums, Value Types π
- Singly Linked List π π
- Contiguous Arrays in Swift π
- NSArrays are implemente with Circular Buffers π
- Open sourced CFArray π
- Abstract Algebraic Structures in Swift 2 βοΈ
- Trees π
- Patricia/Radix trees for Swift βοΈ
- Evolutionary/Genetic Programming in Swift βοΈ βοΈ
- Finger Trees in Swift βοΈ
- Neural Networks in Swift βοΈ
- Swift AI βοΈ
- Naive Bayes Classifier βοΈ
- Swift Matrix Math Library βοΈ βοΈ
- Red Black Tree π
- Tensor Methods in Swift βοΈ
- Sort Utils βοΈ
- Disjoint Sets βοΈ
- Metaprogrammable βοΈ
- Binary Tree βοΈ
- SwiftPriorityQueue βοΈ
- SwiftGraph βοΈ
- Fisher-Yates Shuffle for Swift π
- Rose Tree in Swift π
- Generic Stack in Swift π π
- Deep learning with Swift βοΈ
- HackerRank Solutions in Swift βοΈ
- Abstract Binding Trees π
- Commonly used data structures and algorithms βοΈ βοΈ
- Write a Generic Stable Sort βοΈ
- Either Types micro-framework βοΈ
- CalkinβWilf tree in Swift π
- Algorithms by CosmicMind βοΈ
- AntiPatterns
- Design Patterns
- Swift Design Patterns πΎ
- Template Method Pattern in Swift π
- Strategy Pattern in Swift π
- Design Patterns Library in Swift π
- Creating a Cocoa Bindings Observable Pattern in Swift π
- Observer Pattern in Swift π
- The Sin of Singletons π
- The Null Object Pattern π
- Segues > Delegation π
- Functions as Factories π
- Conform to Objective C Protocols in Swift π
- Optional Protocol Methods π
- The Builder Pattern and Fluent Interface π
- A Better NSNotificationCenter Observer Pattern π
- Key Value Coding in Swift π βοΈ
- Exploring KVO Alternatives in Swift π π βοΈ βοΈ
- Facade Functions π
- Swift Singleton βοΈ
- SOLID Design in Swift βοΈ
- Decorator Pattern through composing functions in Swift π
- Target Action Pattern π
- Typed Notification Observers π
- Library Oriented Programming π€
-
- Oriented Programming π€
- Hole Driven Development π
- Entering a New Codebase πΎ
- Railway Oriented Programming in Swift π π€
- Enum Oriented vs Protocol Oriented Programming βοΈ
- Swift in Practice π€ πΎ
- Denotational Design πΎ
- Building Frameworks in Swift π
- Object Oriented Functional Programming π€
- Enums
- Enums in Swift π
- Advanced and Practical Enum Usage in Swift π
- Enumerating Tuple Values in Swift π
- Simplfied Login with Swift Enums π
- Testing of Enums made easy π
- How to compare Enums with Equatable π
- Raw representable enumeration π
- Enums with Associated Data vs Structs π
- The Sum Types are here π
- Algebraic Data Types in Swift π
- Handling Enums with Raw Values π πΎ
- Using Enums as Constants π
- Enums instead of Booleans π
- Enum vs String Type π
- Enum Driven View Controllers π
- Swift Enums: Initialization with Associated Values from a Server Response π
- Sad State of Enums π
- Swift Algebraic Data Types π
- Create an enum with rawvalue type of closures :page_fcaing_up:
- Immutable Enumeration in Swift π
- The Types of Data in Swift π
- Pattern Matching
- Official Docs π
- Swift's pattern-matching switch statement π
- Custom pattern matching in Swift π
- Advanced Swift Pattern Matching in Detail π
- Control Flow & Pattern Matching π
- Ranges and Intervals in Swift π
- More Pattern Matching Examples π π
- What is a variadic parameter? π
- Pattern Matching in Swift π
- Pattern Matching with an if case π
- Pattern Matching with Recursive Values in Swift π π
- What is value binding? π
- The Switch Statement in Swift π
- The Value of Guard π π
- Guard and Defer π
- Defer in Swift π
- When to (not) use guard π π RE π
- Easy Error Handing π
- Swift Failiable Initializers π
- Swift 2 Error Handling π π π π
- Unmanaged Type π
- try/catch with asynchronous closures π
- Using the assert() keyword π
- Result: Swift type modelling the success/failure of arbitrary operations βοΈ
- Error Styling in Swift π
- Async Error Handling in Swift πΎ
- Let it Throw! π
- Magic Methods in Swift π
- Understanding Optional Chaining π
- 'do' or die π
- try, catch, do and throw π
- Throws is like an Either Type π
- Rethrows in Swift 2 π
- Throwing vs failing vs crashing vs bool π
- Using Swift Throws with Completion Callbacks π
- Testing Swift's ErrorType π€
- Async Error Handling π
- Swift Extensions π
- ExSwift βοΈ
- Useful Swift Extensions βοΈ
- EZSwiftExtensions βοΈ
- Public Extension π
- Adding Class Properties via Extension π
- Type Constrained Extensions in Swift π
- Generic type extension by retrofitting protocols in Swift 2 π
- Type extensions with generic type parameters π
- OptionalExtensions βοΈ
- String extensions βοΈ
- Category and Type Theory
- Cheat Sheet For Typeclasses and Monads in Haskell π π π
- Category Theory For Beginners πΎ πΎ
- Category Theory and Progamming π€
- Awesome Math/Category Theory π
- Category Theory in Haskell π
- The Category Design Pattern π
- Type Theory vs Category Theory π π
- MIT Category Theory Class π
- Functional Programming in Swift
- Declarative Programming
- What is Functional Programming in Swift? πΎ π π πΎ
- Make Swift More Functional πΎ
- Introduction to Functional Programming in Swift π πΎ
- Functional Programming in Swift Talks π€ π€ πΎ π€ π€
- Immutable State
- Immutable Swift π
- Dodging State π
- Map / Filter / Reduce
- Reduce all the things π
- Map and FlatMap demystified π π
- Understanding Reduce in Swift π
- Deriving higher order functions in Swift π
- Reduction in Force π
- Recursion and Infinite Streams
- Continuation Passing Style in Swift π π
- Tying the Knot in Swift π
- FizzBuzz with infinite streams π
- Functional Memoization in Swift π π π
- Aquifier Functional streaming abstractions in Swift βοΈ
- Lazy infinite streams βοΈ
- Better Recursion with Swift π€ πΎ
- Memoization in Swift π
- Lambda Calculus
- Programming is Mathematics π
- Llama Calculus πΎ
- Functors and Applicatives
- Arrows
- Arrows in Swift π
- Monads
- Monoids
- Folds, Zippers, and Lazy Lists
- Promises / Futures
- Combinators
- Lenses, Transducers, Reducers
- Functional Programming with Bananas, Lenses, Envelopes, and Barbed Wire π
- Categories
- Yoneda Embedding π
- Other
- π Swiftz Functional Programming Library βοΈ
- Second Bridge Swift Functional Framework βοΈ
- Swiftx Functional Data Types βοΈ
- Basis Pure Declarative Programming in Swift βοΈ
- Functional Concurrency Primitives βοΈ
- Prelude Library π
- Funky Functional Programming Tools and Experiements βοΈ
- Dollar.Swift Functional Toolkit like Lodash and Underscore βοΈ
- SwiftLand MicroFramework βοΈ
- Declarative Programming
- FRP
- Why FRP π
- FRP in Swift 2.0 π€
- Functional Reactive Programming in an Imperative World π€
- FRP is a forbidden term π π
- What is FRP? On StackOverflow π
- State, Promises, and Reactive Programming π€ βοΈ
- Functional Reactive Programming on iOS πΎ
- Delta Library for managing state π
- Functional Reactive Intuition π
- MVVM
- MVVM + FRP π
- Modern application architectures (Reactive programming, MVVM and beyond) π
- RAC
- Rx
- Functional Rective Programming with RxSwift πΎ
- Generic Arrays in Swift 2.0 π
- The shortcomings of generic protocols π
- Generics in Swift, Part 1 π, Part 2 π
- Official Docs π
- Covariant and contravariant generic type parameters π
- Generic Protocols π
- Partial Function Application with Generics π
- Generic Constructors π and factories π
- Parametric Polymorphism in Swift π π π
- Template Metaprogramming Swift π
- Generic Typealias in Swift π
- Swift βwhereβ keyword π
- Protocol Generics Self π
- Initializers
- Properties
- IBOutlet Style in Swift π
- Lazy Properties in Structs π
- Class Properties in Swift π
- Stored Properties π
- Dependency Injection
- Swift Injection Wesite π
- Dependency Injection with a Custom Initializer π
- C
- Swift and C π€
- Why C is not always safe Swift π
- Objective-C
- ARC
- ARC + Swift π
- Swift Manual Retain/Release π
- LLVM Compiler
- Memory
- Optimizations
- Performance
- SIL and swiftc
- Explorign SIL and swiftc π
- swift vs swiftc π
- SIMD (Single Instruction Multiple Data) π
- @convention π
- Introspecting Swift πΎ
- Unsafe Swift πΎ
- Type Introspection π
- The mysterious builtin module π
- Comparisons
- Haskell Overlords π
- Comparing Swift and Javascript π
- C++ Advice to Swift Devs π
- Swift Protocols vs Java 8 Interfaces π
- Learning Swift from Haskell πΎ and corresponding π€
- Functional Programming like Haskell πΎ π€
- Swift vs Golang πΎ
- Swift 2.0 Protocol Extensions vs Java Abstract Classes π
- Transitioning from ObjC
- Intro to Swift Dev on Linux π
- Dynamic Swift Framework Without Xcode π
- Foundation on Linux π
- NSLinux Strings βοΈ
- interact with Linux GPIO/SPI on ARM βοΈ
- Optionals
- Types
- Value and Reference Types
- Make all Value Types Equatable π€
- Safer Swift Code With Value Types π€ π
- Every Swift Value Type Should be Equatable π
- When to use mutating functions in swift structs π
- Is Swift Pass By Value or Pass By Reference π
- How can I make a weak protocol reference in 'pure' Swift (w/o @objc) π
- When to use weak pointers with delgates π
- Mutating Funcs in Swift Structs π
- Instance methods and type methods in Swift π
- Abstract Types
- Understanding Abstract Types π
- Wrapper Types
- Phantom Types
- What are Phantom Types good for? π
- Dependent Types
- Nested Types
- Type Reflection and Casting
- Simple Reflection in Swift π
- Understanding Reflection in Swift and how to use it π
- Typecasting and the Swift Runtime π
- Why doesn't Swift have implicit type conversion? π
- as? vs as! π
- Understanding Downcasting Operators in Swift π
- Type check with switch statements π
- Associated Types
- Metatypes
- Types and Metatypes in Swift π
- Higher Kinded Types π π π π
- Swift MetaTypes π
- Typeclasses in Swift and Scala π
- Creating new Types in Swift π
- What is ExistentialMetatype in Swift π
- Typeclasses
- Typeclasses in Swift, Haskell and Scala π
- Type Inference
- Other
- Value and Reference Types
- Production Swift
- How Carthage works πΎ πΎ
- Bottom Up Programming in Swift π€
- Make a Cocoapods Framework π€
- Lessons from Production Swift πΎ
- Using the Swift Package Manager π
- Exclude folders in the SPM π
- Swift, Frameworks & Modules, Learnings from CocoaPods π
- BuddyBuild Continuous Integration π
- Swift Package Manager πΎ
- Naming assets π
- Xcode Snippets βοΈ
- Problem Solving with Swift
- Swift Comparison Protocols π
- Protocols in Swift π
- π Protocol-Oriented Programming in Swift π€ πΎ π π
- Protocols in Swift π
- POP is OOP Thesis π
- Standard Template Protocols βοΈ
- Protocol Oriented MVVM π, πΎ
- Functional thinking via Protocol Extensions π
- Protocol Extensions vs Type Extensions π
- What are the advantages? π
- Another look into the concept of P.O.P. π
- If you're subclassing, you're doing it wrong. POP and VOP explained π
- Protocol Oriented Programming through UIKit π
- Protocols in Swift π
- Ray Wenderlich intro to POP π
- Protocol Extensions and the death of the Pipe forward operator π
- How Protocol Oriented Programming could still improve π
- The Swift Protocol Proposal π
- Swift Default Protocol Implementations π
- π Mixins and Traits in Swift 2.0 π
- Minimal Swift 2.1 Protocol Coformance π
- Favor Mixins over inheritance π
- Use Protocol Composition π
- 55 Standard Library Swift Protocols πΎ π π€
- Current Recommmended Protocol Usage π
- POP in Swift vs ObjC and C++ π
- POP Utility Belt βοΈ
- Typesafe and Composable Data Sources in Swift π
- Protocol Extension Method Dispatch π
- The Genius of Protocols π
- Properties of Types Conforming to Protocols π
- Encryptor / Decryptor Data Format βοΈ
- CommonCrypto in Swift π€
- π₯ Awesome iOS Security π
- Ceaser Cipher in Swift π π
- Swift-ly secure π€
- Common Crypto π
- Reverse Engineering iOS Apps π€
- Hello Server Side Swift π
- Vapor Swift Web Framework βοΈ
- Swift Redis βοΈ
- TCP Sockets in Swift βοΈ
- Zevo Server Side Swift Community π
- Venice based HTTP server for Swift 2.2 on Linux βοΈ
- Swift HTTP Servers βοΈ βοΈ βοΈ βοΈ
- Swift Server IO βοΈ
- Kitura Web Framework and HTTP Server βοΈ
- Swift on Rails βοΈ
- Strings
- Regular Expressions
- RegularExpressions in Swift π
- Creating a Lexer in Swift π
- Creating an Abstract Syntax Tree Parser in Swift π π
- String to Number Parser βοΈ
- Madness: Parsing strings in simple context-free grammars βοΈ
- NSRegularExpression Cheat Sheet π
- Parser combinators, for Swift π βοΈ βοΈ
- Clean Regular Expressions in Swift π
- Simple Regex π
- Verbal Expressions style RegEx βοΈ
- About Swift
- WWDC 2014: Advanced Swift π€ πΎ
- What's new in Swift 2 π€ πΎ
- Diving into Swift 2 π
- Best of Swift 2 π
- New Features in Swift 2 π
- Switching your brain to Swift π
- Short Circuit Evaluation π
- How Swift makes your life better π
- Emerging best practices in Swift π€
- Swift Thinking π€
- Hidden Gems in Swift π€
- Catching up with Swift πΎ
- Idiomatic Swift πΎ
- Swiftly Methods π
- Open Source Swift
- Opinions about Swift
- Wishlist for Swift 3.0 π
- The Death of Cocoa π
- Swift is not functional π π
- Which features overcomplicate Swift? What should be removed? π
- Does Apple Swift have enough functional features to be considered as a functional language? Why? π
- What is the bare minimum you need to learn Swift? π
- How flexible is Swift? π
- Top 10 iOS Swift libraries every iOS developer should know about π
- Unit Testing
- TDD
- BDD
- UI Testing
- UI Testing Cheat Sheet π
- Replacing KIF with XCUI Tests π
- Debugging
- Network Testing
- Snapshot Testing
- iOS Snapshot Test Cases βοΈ
- Profiling
- Functional Testing
- Other
- Continuous Integration
- Using Xcode Bots π
- Debugging Tools
- Delivery Tools
- Development Tools
- Docker Tools
- Server Tools
- Heroku Buildpack for Swift βοΈ
- Swift Tools
- Exploring Graph Theory with OmniGraffle and Swift π
- Xcode Tools
- Elm Like Architecture
- Functional
- Massive View Controllers
- Refractor the Mega Controller π€
- Preventing Massive View Controllers π€
- Destroying Massive View Controllers π with patterns π
- Lighter View Controllers in Swift π π
- View Controller Thinning π via Dependency Injection π
- Consistent, Thin, & Dumb: Redesigning the Spotify iOS App π€
- Model Layer and Caching
- Model View Whatever
- Viper
- Unidirectional Data Flow
- Ziggurat iOS App Architecture π
- One Way Data Flow Architecture in Swift π€
- Unidirectional Dataflow Architecture with Swift-Flow π€ βοΈ πΎ
- ReSwift Unidirectional Data Flow βοΈ
- CocoaFlow Architecture π
- Improve your iOS Architecture with FlowControllers π
- Explaining Flux data flow in Swift π
- ReduxKit is a predictable state container for Swift apps π π βοΈ
- State Machines in Swift βοΈ πΎ
- Uber Jetstream βοΈ
- Building a Unidirectional Data Flow app with Realm π
- Core Data
- A Swift Into To Core Data π
- Moving from ObjC to Swift with Core Data π
- What, if any, ACID gurantees does Core Data Make? π
- Core Data Libraries and NSKeyedArchiver π
- Ditching Core Data for Something else π
- JSQCoreDataKit π
- Comparing Core Data Stacks π
- Using Core Data with Swift π€
- Better Core Data Models with Swift π
- Core Data in 2015 and Magical Record in Swift π€
- Core Data Threading Demystified π€
- My Core Data Stack π π
- Core Data Tutorial Series π
- Core Data Fundamentals: Exploring the Core Data Stack π
- Pragmatic Core Data π€
- Realm
- Super simple Realm Intro π πΎ π
- Why Realm over Core Data? π πΎ
- Official Realm Introduction π
- Realm Tutorial π
- Why Realm is great and why we're not going to use it π
- Realm Best Practices π
- Realm Repo π
- Reddit Thread π
- A look into Realm's Core DB Engine π€
- Working with Realm π
- Testing Realm Apps π
- Looking at Realm's Core DB Engine πΎ
- Animations
- Autolayout
- CollectionViews
- Core Image
- Core Image Blog π
- Presenting
- Swifty View Controller Presenters π€
- TableViews
- SpriteKit and Metal
- Mixing SpriteKit with UIKit in iOS 9 π
- UIKit
- Networking
- JSON
- Functional JSON Parsing with Tyro βοΈ
- { JSON, Swift, and Type Safety } πΎ
- JSON in Swift π
- Functional JSON Parsing π
- Routing
- An AlamoFire Router π
- Web Services
- The Xcode Build System π
- Ray Wenderlich π
- Toptal π
- LeetCode π
- Coding Questions π
- π₯ Awesome Swift Interview Questions π
- π₯ Awesome iOS Interview Questions π
- π = Gist
- βοΈ = Repository
- π = Blog
- π = Blog Post
- π = Quick Reference
- π = Book
- π = Guide Book
- π° = Newsletter
- πΎ = Slides
- π€ = Video Presentation
- πΉ = Video
- π = Link
- π₯ = Awesome List
- π = Learning Resource
- π = Interview Questions
- π» = Podcast
Shoutout to @clattner_llvm, the OG Swift Developer. Shoutout to @chriseidhof for encouraging me to promote this idea and for being a huge baller. Shoutout to @ashfurrow and @bennRodri for being so incredibly helpful. Shoutout to @CodaFi_, the TypeLift, and the AntiTypical teams for promoting FP. Shoutout to Elm Trailblazers. Shoutout to Haskell Devs and Category Theory legends. Shoutout to FutureKit. And finally, Shoutout to all the Swift Programmers out there, this project is by you and for you!