Android Development with Kotlin

✍ Scribed by Moskala, Marcin;Wojda, Igor

• Publisher: Packt Publishing
• Year: 2017
• Tongue: English
• Leaves: 436
• Edition: 1st ed
• Category: Library

✦ Synopsis

Custom getters/setters -- The getter versus property default value -- Late-initialized properties -- Annotating properties -- Inline properties -- Constructors -- Property versus constructor parameter -- Constructor with default arguments -- Patterns -- Inheritance -- The JvmOverloads annotation -- Interfaces -- Data classes -- The equals and hashCode method -- The toString method -- The copy method -- Destructive declarations -- Operator overloading -- Object declaration -- Object expression -- Companion objects -- Companion object instantiation -- Enum classes -- Infix calls for named methods -- Visibility modifiers -- Internal modifier and Java bytecode -- Sealed classes -- Nested classes -- Import aliases -- Summary -- Chapter 5: Functions as First-Class Citizens -- Function type -- What is function type under the hood? -- Anonymous functions -- Lambda expressions -- Implicit name of a single parameter -- Higher-order functions -- Providing operations to functions -- Observer (Listener) pattern -- Callback after a threaded operation -- Combination of named arguments and lambda expressions -- Last lambda in argument convention -- Named code surrounding -- Processing data structures using LINQ style -- Java SAM support in Kotlin -- Named Kotlin function types -- Named parameters in function type -- Type alias -- Underscore for unused variables -- Destructuring in lambda expressions -- Inline functions -- The noinline modifier -- Non-local returns -- Labeled return in lambda expressions -- Crossinline modifier -- Inline properties -- Function References -- Summary -- Chapter 6: Generics Are Your Friends -- Generics -- The need for generics -- Type parameters versus type arguments -- Generic constraints -- Nullability -- Variance -- Variance modifiers -- Use-site variance versus declaration-site variance -- Collection variance;Variance producer/consumer limitation -- Invariant constructor -- Type erasure -- Reified type parameters -- The startActivity method -- Star-projections -- Type parameter naming conventions -- Summary -- Chapter 7: Extension Functions and Properties -- Extension functions -- Extension functions under the hood -- No method overriding -- Access to receiver elements -- Extensions are resolved statically -- Companion object extensions -- Operator overloading using extension functions -- Where should top-level extension functions be used? -- Extension properties -- Where should extension properties be used? -- Member extension functions and properties -- Type of receivers -- Member extension functions and properties under the hood -- Generic extension functions -- Collection processing -- Kotlin collection type hierarchy -- The map, filter, flatMap functions -- The forEach and onEach functions -- The withIndex and indexed variants -- The sum, count, min, max, and sorted functions -- Other stream processing functions -- Examples of stream collection processing -- Sequence -- Function literals with receiver -- Kotlin standard library functions -- The let function -- Using the apply function for initialization -- The also function -- The run and with function -- The to function -- Domain-specific language -- Anko -- Summary -- Chapter 8: Delegates -- Class delegation -- Delegation pattern -- Decorator pattern -- Property delegation -- What are delegated properties? -- Predefined delegates -- The lazy function -- The notNull function -- The observable delegate -- The vetoable delegate -- Property delegation to Map type -- Custom delegates -- View binging -- Preference binding -- Providing a delegate -- Summary -- Chapter 9: Making Your Marvel Gallery Application -- Marvel Gallery -- How to use this chapter -- Make an empty project -- Character gallery;Cover -- Copyrights -- Credits -- About the Authors -- About the Reviewers -- www.PacktPub.com -- Customer Feedback -- Table of Contents -- Preface -- Chapter 1: Beginning Your Kotlin Adventure -- Say hello to Kotlin -- Awesome Kotlin examples -- Dealing with Kotlin code -- Kotlin Playground -- Android Studio -- Configuring Kotlin for the project -- Using Kotlin in a new Android project -- Java to Kotlin converter (J2K) -- Alternative ways to run Kotlin code -- Kotlin under the hood -- The Kotlin standard library -- More reasons to use Kotlin -- Summary -- Chapter 2: Laying a Foundation -- Variables -- Type inference -- Strict null safety -- Safe call -- Elvis operator -- Not null assertion -- Let -- Nullability and Java -- Casts -- Safe/unsafe cast operator -- Smart casts -- Type smart casts -- Non-nullable smart cast -- Primitive data types -- Numbers -- Char -- Arrays -- The Boolean type -- Composite data types -- Strings -- String templates -- Ranges -- Collections -- Statements versus expressions -- Control flow -- The if statement -- The when expression -- Loops -- The for loop -- The while loop -- Other iterations -- Break and continue -- Exceptions -- The try ... catch block -- Compile-time constants -- Delegates -- Summary -- Chapter 3: Playing with Functions -- Basic function declaration and usages -- Parameters -- Returning functions -- Vararg parameter -- Single-expression functions -- Tail-recursive functions -- Different ways of calling a function -- Default arguments values -- Named arguments syntax -- Top-level functions -- Top-level functions under the hood -- Local functions -- Nothing return type -- Summary -- Chapter 4: Classes and Objects -- Classes -- Class declaration -- Properties -- Read-write versus read-only property -- Property access syntax between Kotlin and Java -- Increment and decrement operators;View implementation -- Network definition -- Business logic implementation -- Putting it all together -- Character search -- Character profile display -- Summary -- Index