Clojure Programming. Practical Lisp for the Java World

Spis treści książki

• Clojure Programming
• Preface
  • Who Is This Book For?
    • Engaged Java Developers
    • Ruby, Python, and Other Developers
  • How to Read This Book
    • Start with Practical Applications of Clojure
    • Start from the Ground Up with Clojures Foundational Concepts
  • Whos We?
    • Chas Emerick
    • Brian Carper
    • Christophe Grand
  • Acknowledgments
    • And Last, but Certainly Far from Least
  • Conventions Used in This Book
  • Using Code Examples
  • Safari Books Online
  • How to Contact Us
• 1. Down the Rabbit Hole
  • Why Clojure?
  • Obtaining Clojure
  • The Clojure REPL
  • No, Parentheses Actually Wont Make You Go Blind
  • Expressions, Operators, Syntax, and Precedence
  • Homoiconicity
  • The Reader
    • Scalar Literals
      • Strings
      • Booleans
      • nil
      • Characters
      • Keywords
      • Symbols
      • Numbers
      • Regular expressions
    • Comments
    • Whitespace and Commas
    • Collection Literals
    • Miscellaneous Reader Sugar
  • Namespaces
  • Symbol Evaluation
  • Special Forms
    • Suppressing Evaluation: quote
    • Code Blocks: do
    • Defining Vars: def
    • Local Bindings: let
    • Destructuring (let, Part 2)
      • Sequential destructuring
      • Map destructuring
    • Creating Functions: fn
      • Destructuring function arguments
      • Function literals
    • Conditionals: if
    • Looping: loop and recur
    • Referring to Vars: var
    • Java Interop: . and new
    • Exception Handling: try and throw
    • Specialized Mutation: set!
    • Primitive Locking: monitor-enter and monitor-exit
  • Putting It All Together
    • eval
  • This Is Just the Beginning
• I. Functional Programming and Concurrency
  • 2. Functional Programming
    • What Does Functional Programming Mean?
    • On the Importance of Values
      • About Values
      • Comparing Values to Mutable Objects
      • A Critical Choice
    • First-Class and Higher-Order Functions
      • Applying Ourselves Partially
    • Composition of Function(ality)
      • Writing Higher-Order Functions
      • Building a Primitive Logging System with Composable Higher-Order Functions
    • Pure Functions
      • Why Are Pure Functions Interesting?
    • Functional Programming in the Real World
  • 3. Collections and Data Structures
    • Abstractions over Implementations
      • Collection
      • Sequences
        • Sequences are not iterators
        • Sequences are not lists
        • Creating seqs
        • Lazy seqs
        • Head retention
      • Associative
        • Beware of nil values
      • Indexed
      • Stack
      • Set
      • Sorted
        • Comparators and predicates to define ordering
    • Concise Collection Access
      • Idiomatic Usage
      • Collections and Keys and Higher-Order Functions
    • Data Structure Types
      • Lists
      • Vectors
        • Vectors as tuples
      • Sets
      • Maps
        • Maps as ad-hoc structs
        • Other usages of maps
    • Immutability and Persistence
      • Persistence and Structural Sharing
        • Visualizing persistence: lists
        • Visualizing persistence: maps (and vectors and sets)
        • Tangible benefits
      • Transients
    • Metadata
    • Putting Clojures Collections to Work
      • Identifiers and Cycles
      • Thinking Different: From Imperative to Functional
        • Revisiting a classic: Conways Game of Life
        • Maze generation
      • Navigation, Update, and Zippers
        • Manipulating zippers
        • Custom zippers
        • Ariadnes zipper
    • In Summary
  • 4. Concurrency and Parallelism
    • Shifting Computation Through Time and Space
      • Delays
      • Futures
      • Promises
    • Parallelism on the Cheap
    • State and Identity
    • Clojure Reference Types
    • Classifying Concurrent Operations
    • Atoms
    • Notifications and Constraints
      • Watches
      • Validators
    • Refs
      • Software Transactional Memory
      • The Mechanics of Ref Change
        • Understanding alter
        • Minimizing transaction conflict with commute
        • Clobbering ref state with ref-set
        • Enforcing local consistency by using validators
      • The Sharp Corners of Software Transactional Memory
        • Side-effecting functions strictly verboten
        • Minimize the scope of each transaction
        • Readers may retry
        • Write skew
    • Vars
      • Defining Vars
        • Private vars
        • Docstrings
        • Constants
      • Dynamic Scope
      • Vars Are Not Variables
      • Forward Declarations
    • Agents
      • Dealing with Errors in Agent Actions
        • Agent error handlers and modes
      • I/O, Transactions, and Nested Sends
        • Persisting reference states with an agent-based write-behind log
        • Using agents to parallelize workloads
    • Using Javas Concurrency Primitives
      • Locking
    • Final Thoughts
• II. Building Abstractions
  • 5. Macros
    • What Is a Macro?
      • What Macros Are Not
      • What Can Macros Do that Functions Cannot?
      • Macros Versus Ruby eval
    • Writing Your First Macro
    • Debugging Macros
      • Macroexpansion
    • Syntax
      • quote Versus syntax-quote
      • unquote and unquote-splicing
    • When to Use Macros
    • Hygiene
      • Gensyms to the Rescue
      • Letting the User Pick Names
      • Double Evaluation
    • Common Macro Idioms and Patterns
    • The Implicit Arguments: &env and &form
      • &env
      • &form
        • Producing useful macro error messages
        • Preserving user-provided type hints
      • Testing Contextual Macros
    • In Detail: -> and ->>
    • Final Thoughts
  • 6. Datatypes and Protocols
    • Protocols
    • Extending to Existing Types
    • Defining Your Own Types
      • Records
        • Constructors and factory functions
        • When to use maps or records
      • Types
    • Implementing Protocols
      • Inline Implementation
        • Inline implementations of Java interfaces
        • Defining anonymous types with reify
      • Reusing Implementations
    • Protocol Introspection
    • Protocol Dispatch Edge Cases
    • Participating in Clojures Collection Abstractions
    • Final Thoughts
  • 7. Multimethods
    • Multimethods Basics
    • Toward Hierarchies
    • Hierarchies
      • Independent Hierarchies
    • Making It Really Multiple!
    • A Few More Things
      • Multiple Inheritance
      • Introspecting Multimethods
      • type Versus class; or, the Revenge of the Map
      • The Range of Dispatch Functions Is Unlimited
    • Final Thoughts
• III. Tools, Platform, and Projects
  • 8. Organizing and Building Clojure Projects
    • Project Geography
      • Defining and Using Namespaces
        • Namespaces and files
        • A classpath primer
      • Location, Location, Location
      • The Functional Organization of Clojure Codebases
        • Basic project organization principles
    • Build
      • Ahead-of-Time Compilation
      • Dependency Management
      • The Maven Dependency Management Model
        • Artifacts and coordinates
        • Repositories
        • Dependencies
      • Build Tools and Configuration Patterns
        • Maven
        • Leiningen
        • AOT compilation configuration
        • Building mixed-source projects
    • Final Thoughts
  • 9. Java and JVM Interoperability
    • The JVM Is Clojures Foundation
    • Using Java Classes, Methods, and Fields
    • Handy Interop Utilities
    • Exceptions and Error Handling
      • Escaping Checked Exceptions
      • with-open, finallys Lament
    • Type Hinting for Performance
    • Arrays
    • Defining Classes and Implementing Interfaces
      • Instances of Anonymous Classes: proxy
      • Defining Named Classes
        • gen-class
      • Annotations
        • Producing annotated JUnit tests
        • Implementing JAX-RS web service endpoints
    • Using Clojure from Java
      • Using deftype and defrecord Classes
      • Implementing Protocol Interfaces
    • Collaborating Partners
  • 10. REPL-Oriented Programming
    • Interactive Development
      • The Persistent, Evolving Environment
    • Tooling
      • The Bare REPL
        • Introspecting namespaces
      • Eclipse
      • Emacs
        • clojure-mode and paredit
        • inferior-lisp
        • SLIME
    • Debugging, Monitoring, and Patching Production in the REPL
      • Special Considerations for Deployed REPLs
    • Limitations to Redefining Constructs
    • In Summary
• IV. Practicums
  • 11. Numerics and Mathematics
    • Clojure Numerics
      • Clojure Prefers 64-bit (or Larger) Representations
      • Clojure Has a Mixed Numerics Model
      • Rationals
      • The Rules of Numeric Contagion
    • Clojure Mathematics
      • Bounded Versus Arbitrary Precision
      • Unchecked Ops
      • Scale and Rounding Modes for Arbitrary-Precision Decimals Ops
    • Equality and Equivalence
      • Object Identity (identical?)
      • Reference Equality (=)
      • Numeric Equivalence (==)
        • Equivalence can preserve your sanity
    • Optimizing Numeric Performance
      • Declare Functions to Take and Return Primitives
        • Type errors and warnings
      • Use Primitive Arrays Judiciously
        • The mechanics of primitive arrays
        • Automating type hinting of multidimensional array operations
    • Visualizing the Mandelbrot Set in Clojure
  • 12. Design Patterns
    • Dependency Injection
    • Strategy Pattern
    • Chain of Responsibility
    • Aspect-Oriented Programming
    • Final Thoughts
  • 13. Testing
    • Immutable Values and Pure Functions
      • Mocking
    • clojure.test
      • Defining Tests
      • Test Suites
      • Fixtures
    • Growing an HTML DSL
    • Relying upon Assertions
      • Preconditions and Postconditions
  • 14. Using Relational Databases
    • clojure.java.jdbc
      • with-query-results Explained
      • Transactions
      • Connection Pooling
    • Korma
      • Prelude
      • Queries
      • Why Bother with a DSL?
    • Hibernate
      • Setup
      • Persisting Data
      • Running Queries
      • Removing Boilerplate
    • Final Thoughts
  • 15. Using Nonrelational Databases
    • Getting Set Up with CouchDB and Clutch
    • Basic CRUD Operations
    • Views
      • A Simple (JavaScript) View
      • Views in Clojure
    • _changes: Abusing CouchDB as a Message Queue
    • la Carte Message Queues
    • Final Thoughts
  • 16. Clojure and the Web
    • The Clojure Stack
    • The Foundation: Ring
      • Requests and Responses
      • Adapters
      • Handlers
      • Middleware
    • Routing Requests with Compojure
    • Templating
      • Enlive: Selector-Based HTML Transformation
        • Testing the waters
        • Selectors
        • Iterating and branching
        • Putting everything together
    • Final Thoughts
  • 17. Deploying Clojure Web Applications
    • Java and Clojure Web Architecture
      • Web Application Packaging
        • Building .war files with Maven
        • Building .war files with Leiningen
    • Running Web Apps Locally
    • Web Application Deployment
      • Deploying Clojure Apps to Amazons Elastic Beanstalk
    • Going Beyond Simple Web Application Deployment
• V. Miscellanea
  • 18. Choosing Clojure Type Definition Forms Wisely
  • 19. Introducing Clojure into Your Workplace
    • Just the Facts
    • Emphasize Productivity
    • Emphasize Community
    • Be Prudent
  • 20. Whats Next?
    • (dissoc Clojure JVM)
      • ClojureCLR
      • ClojureScript
    • 4Clojure
    • Overtone
    • core.logic
    • Pallet
    • Avout
    • Clojure on Heroku
• Index
• About the Authors
• Colophon
• Copyright

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