Hands-On Functional Programming with TypeScript电子书

Title Page

Copyright and Credits

Hands-On Functional Programming with TypeScript

Dedication

About Packt

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Foreword

Contributors

About the author

About the reviewers

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Preface

Who this book is for

What this book covers

To get the most out of this book

Download the example code files

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Conventions used

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Reviews

Functional Programming Fundamentals

Is TypeScript a functional programming language?

The benefits of functional programming

Introducing functional programming

Pure functions

side-effects

Referential transparency

Stateless versus stateful

Declarative versus imperative programming

Immutability

Functions as first-class citizens

Lambda expressions

Function arity

Higher-order functions

Laziness

Summary

Mastering Functions

Function types

Named and anonymous functions

Function declarations and function expressions

Working with function parameters

Trailing commas in function arguments

Functions with optional parameters

Functions with default parameters

Functions with rest parameters

Function overloading

Specialized overloading signature

Function scope and hoisting

Immediately-invoked functions

Tag functions and tagged templates

Summary

Mastering Asynchronous Programming

Callbacks and higher-order functions

Arrow functions

Callback hell

Promises

Covariant checking in callback parameters

Generators

Asynchronous functions – async and await

Asynchronous generators

Asynchronous iteration (for await…of)

Delegating to another generator (yield*)

Summary

The Runtime – The Event Loop and the this Operator

The environment

Understanding the event loop

Frames

Stack

Queue

Heap

The event loop

The this operator

The this operator in the global context

The this operator in the function context

The call, apply, and bind methods

Summary

The Runtime – Closures and Prototypes

Prototypes

Instance properties versus class properties

Prototypal inheritance

Prototype chains and property shadowing

Accessing the prototype of an object

Closures

Static variables powered by closures

Private members powered by closures

Summary

Functional Programming Techniques

Composition techniques

Composition

Partial application

Currying

strictBindCallApply

Pipes

Other techniques

Point-free style

Recursion

Pattern matching

Summary

Category Theory

Category theory

Functors

Applicative

Maybe

Either

Monads

Summary

Immutability, Optics, and Laziness

Immutability

Optics

Lenses

Prisms

Laziness

Summary

Functional-Reactive Programming

Reactive programming

Functional programming versus functional-reactive programming

The benefits of functional-reactive programming

Working with observables

The observer pattern

The iterator pattern

Creating observables

Creating observables from a value

Creating observables from arrays

Creating observables from events

Creating observables from callbacks

Creating observables from promises

Cold and hot observables

Working with operators

Pipe

Max

Every

Find

Filter

Map

Reduce

Throttle

Merge

Zip

Summary

Real-World Functional Programming

Working with Ramda

Composition

Partial application and currying

Lenses

Working with Immutable.js

Working with Immer

Working with Funfix

Summary

Functional Programming Learning Road Map

Beginner

Advanced beginner

Intermediate

Proficient

Expert

Summary

Directory of TypeScript Functional Programming Libraries

Functional programming

Category theory

Laziness

Immutability

Optics and lenses

Functional-reactive programming

Others

Summary

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