Learning C++ Functional Programming (2017) [Anggoro] [9781787281974]

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Cover Copyright Credits About the Author About the Reviewer www.PacktPub.com Customer Feedback Table of Contents Preface Chapter 1: Diving into Modern C++ Getting closer with several new features in modern C++ Defining the data type automatically using the auto keyword Querying the type of an expression using the decltype keyword Pointing to a null pointer Returning an iterator using non-member begin() and end() function Iterating over collections using range-based for loops Leveraging the use of C++ language with the C++ Standard Libraries Placing any objects in the container Using algorithms Simplifying the function notation using a Lambda expression Using the Lambda expression for a tiny function Using the Lambda expression for multiline functions Returning a value from the Lambda expression Capturing a value to the Lambda expression Preparing the value using initialization captures Writing a generic Lambda expression to be used many times with many different data types Avoiding manual memory management with smart pointers Replacing a raw pointer using unique_ptr Sharing objects using shared_ptr Tracking the objects using a weak_ptr pointer Storing many different data types using tuples Unpacking tuples values Returning a tuple value type Summary Chapter 2: Manipulating Functions in Functional Programming Applying the first-class function in all functions Passing a function as another function's parameter Assigning a function to a variable Storing a function in the container Creating a new function from the existing functions at runtime Getting acquainted with three functional techniques in the higher-order function Executing each element list using map Extracting data using filter Combining all elements of a list using fold Avoiding the side effect with pure function Reducing a multiple arguments function with currying Summary Chapter 3: Applying Immutable State to the Function Understanding the essential part from immutable object Modifying a local variable Modifying a variable passed into a function Preventing the modification of a value Applying the first-class function and the pure function to the immutable object Developing the immutable object Starting with a mutable object Refactoring a mutable object into an immutable one Enumerating the benefits of being immutable Summary Chapter 4: Repeating Method Invocation Using Recursive Algorithm Repeating the function invocation recursively Performing the iteration procedure to repeat the process Performing the recursion procedure to repeat the process Recurring the immutable function Getting closer to tail recursion Getting acquainted with functional, procedural, and backtracking recursion Expecting results from functional recursion Running a task recursively in procedural recursion Backtracking recursion Summary Chapter 5: Procrastinating the Execution Process Using Lazy Evaluation Evaluating the expression Running the expression immediately with strict evaluation Delaying the expression with non-strict evaluation The basic concept of lazy evaluation Delaying the process Caching the value using the memoization technique Optimizing the code using the memoization technique Lazy evaluation in action Designing Chunk and Row classes Concatenating several rows Iterating each Row class' element Generating the infinite integer row Generating an infinite prime numbers row Refactoring eager evaluation to lazy evaluation Summary Chapter 6: Optimizing Code with Metaprogramming Introduction to metaprogramming Preprocessing the code using a macro Dissecting template metaprogramming in the Standard Library Building the template metaprogramming Adding a value to the variable in the template Mapping a function to the input parameters Choosing the correct process based on the condition Repeating the process recursively Selecting a type in compile-time Flow control with template metaprogramming Deciding the next process by the current condition Selecting the correct statement Looping the process Executing the code in compile-time Getting a compile-time constant Generating the class using a compile-time class generation Benefits and drawbacks of metaprogramming Summary Chapter 7: Running Parallel Execution Using Concurrency Concurrency in C++ Processing a single threading code Processing a multithreading code Synchronizing the threads using mutex Avoiding synchronization issues Unlocking the variable automatically Avoiding deadlock using recursive mutex Understanding the thread processing in a Windows operating system Working with handle Refactoring to a unique handle Triggering an event Calling an event from a thread Summary Chapter 8: Creating and Debugging Application in Functional Approach Preparing an imperative class Refactoring the imperative class to become a functional class Passing a function as a parameter Adding a base class Transforming the class to become pure Filtering the condition and implementing a Lambda expression Implementing recursion and memoization techniques to the Customer class Debugging the code Starting the debugging tool Continuing and stepping the debugging process Setting and deleting the breakpoint Printing the object value Summary Index