f program— introducing functional programming

... gentlemen, is functional programming: • The definition of an abstraction for “existence” in the guise of a function • The definition of an abstraction for “truthiness” built from existing functions ... depth Before I get into the definition and details of JavaScript’s support for first-class functions, let me take a brief moment to elucidate how the other three models differ from functional programming ... intention of using JavaScript beyond the confines of these pages A Roadmap for Functional JavaScript Here is an outline of the topics covered in Functional JavaScript: Chapter 1, Introducing Functional...

Ngày tải lên: 11/05/2017, 13:49

... #light let rec fib x = match x with | -> | -> | x -> fib (x - 1) + fib (x - 2) printfn "(fib 2) = %i" (fib 2) printfn "(fib 6) = %i" (fib 6) printfn "(fib 11) = %i" (fib 11) The results of this example, ... rule definition printfn "(myOr true false) = %b" (myOr true false) printfn "(myOr false false) = %b" (myOr false false) printfn "(myAnd (true, false)) = %b" (myAnd (true, false)) printfn "(myAnd ... types from non -F# libraries in Chapter Defining Types The type system in F# provides a number of features for defining custom types All of F# ’s type definitions fall into two categories The first...

Ngày tải lên: 05/10/2013, 10:20

... mapped that function onto the entire list From one filename, you can get a module name; from a list of filenames, you can get a list of module names Instead of filter, you could have used a for loop ... from the list passed to filter for which the function passed to filter returns true Got all that? It's not as difficult as it sounds Example 16.7 Introducing filter >>> def odd(n): return n % ... re.compile("test\.py$", re.IGNORECASE) files = [f for f in files if test.search (f) ] 1 This will accomplish exactly the same result as using the filter function Which way is more expressive? That's...

Ngày tải lên: 24/10/2013, 09:15

... of Contents Preface Welcome to Functional Programming for Java Developers Why should a Java developer learn about functional programming (FP)? After all, hasn’t functional programming been safely ... Functional Programming for Java Developers Functional Programming for Java Developers Dean Wampler Beijing • Cambridge • Farnham • Köln • Sebastopol • Tokyo Functional Programming for Java ... to Work Faster and Faster Functional Programming Is a Return to Simplicity 2 What Is Functional Programming? The Basic Principles of Functional Programming...

Ngày tải lên: 17/02/2014, 11:20

... www.it-ebooks.info PROFESSIONAL Functional Programming in C# CLASSIC PROGRAMMING TECHNIQUES FOR MODERN PROJECTS Oliver Sturm www.it-ebooks.info Professional Functional Programming in C#: Classic Programming ... solutions from the functional realm by themselves The ideas of functional programming often provide very natural solutions, and the fact that you can arrive there from different directions reinforces ... of imperative programming, www.it-ebooks.info ❘ CHAPTER A LOOK AT FUNCTIONAL PROGRAMMING HISTORY where program state often influences return values of functions Both functional and imperative programming...

Ngày tải lên: 28/04/2014, 16:01

... of diff: roughDiff fineDiff superDiff 2.4.3 = = = flexDiff 0.01 flexDiff 0.0001 flexDiff 0.000001 Home-made square root In Gofer the function sqrt is built in to calculate the square root of ... danger of forgetting one) Even more flexible it would be, to define the value of h as a parameter of diff: flexDiff h f x = (f (x+h) - f x) / h By defining h as the first parameter of flexDiff, this function ... The definition in Gofer could be: diff :: diff f = where (Float->Float) -> (Float->Float) f f x = (f (x+h) - f x) / h h = 0.0001 Due to the Currying mechanism the second pair of parentheses in...

Ngày tải lên: 29/06/2014, 08:20

... TO FUNCTIONAL PROGRAMMING What is functional programming? Getting Started Functional data structures Handling errors without exceptions Strictness and laziness Purely functional state PART 2: FUNCTIONAL ... result of evaluating e, without affecting the observable behavior of p A function f is pure if the expression f( x) is referentially transparent for all referentially transparent x.1 Footnote ... premise of functional programming Functional programming (FP) is based on a simple premise with far-reaching implications: We construct our programs using only pure functions In other words, functions...

Ngày tải lên: 01/08/2014, 17:15

... of many competing design criteria Each system must meet a completely different set of requirements, any or all of which can affect the compromises and tradeoffs made during the development of ... All of the core language features are the same as C, but C++ adds new functionality for better data abstraction and a more objectoriented style of programming These new features are very helpful ... of program efficiency Ada is also an object-oriented language, though it is substantially different than C++ Ada was originally designed by the U.S Department of Defense for the development of...

Ngày tải lên: 05/08/2014, 10:21

... benefit of making your application software more portable If the memory map ever changes-for example, if the 128 KB of RAM is moved-you need only change the affected lines of the boardspecific ... control and status registers for each of the on-chip peripherals are located at fixed offsets from the PCB base address The exact offset of each register can be found in a table in the 80188EB ... range FFC00h to FFFFFh-and that no other memory or I/O devices are present This is the processor's "fetal position," and it implies that the hw_init routine must be located at address FFC00h...

Ngày tải lên: 05/08/2014, 10:21

... (polynomial) Initial 0xFFFF 0x0000 0xFFFFFFFF remainder Final XOR 0x0000 0x0000 0xFFFFFFFF value The code that follows can be used to compute any CRC formula that has a similar set of parameters.[3] ... sizeof(datum); (offset & addressMask) != 0; offset

Ngày tải lên: 05/08/2014, 10:21

... "tgt188eb.h" /* * Features of the AMD 2 9F0 10 Flash memory device */ #define FLASH_SIZE 0x20000 #define FLASH_BLOCK_SIZE 0x04000 #define UNLOCK1_OFFSET #define UNLOCK2_OFFSET #define COMMAND_OFFSET 0x5555 ... flashBase = FLASH_BASE; unsigned int offset; for (offset = 0; offset < nBytes; offset++) { /* * Issue the command sequence for byte program */ flashBase[UNLOCK1_OFFSET] = FLASH_CMD_UNLOCK1; flashBase[UNLOCK2_OFFSET] ... flashBase[UNLOCK2_OFFSET] = FLASH_CMD_UNLOCK2; flashBase[COMMAND_OFFSET] = FLASH_CMD_ERASE_SETUP; flashBase[UNLOCK1_OFFSET] = FLASH_CMD_UNLOCK1; flashBase[UNLOCK2_OFFSET] = FLASH_CMD_UNLOCK2; *sectorAddress = FLASH_CMD_SECTOR_ERASE;...

Ngày tải lên: 05/08/2014, 10:21

... many different services possible And it is frequently the case that the only real difference between two implementations is the name of the function or method This problem has persisted for several ... programmers All but the most trivial of embedded programs will benefit from the inclusion of an operating system This can range from a small kernel written by you to a full-featured commercial operating ... multiple software tasks simultaneously on a single processor Each such task is a piece of the software that can be separated from and run independently of the rest A set of embedded software requirements...

Ngày tải lên: 05/08/2014, 10:21

... char * // Transmit Buffer Size // Receive Buffer Size getchar(); gets(char *s); private: int channel; CircBuf * CircBuf * pTxQueue; pRxQueue; // Transmit Buffer // Receive Buffer }; Note the private ... that of the flashRed function So, the only thing left for us to discuss is the makeup of the serial port driver We'll start with a description of a generalized serial ports interface and then finish ... discuss the process of selecting the commercial operating system that best fits the needs of your project Commercial operating systems form a continuum of functionality, performance, and price...

Ngày tải lên: 05/08/2014, 10:21

... with the actual function call and is most effective when the inline function is called frequently but contains only a few lines of code Inline functions provide a perfect example of how execution ... a subset of the functionality yourself with significantly less code For example, the standard C library's sprintf routine is notoriously large Much of this bulk is located within the floating-point ... But if you don't need to format and display floating-point values ( %f or %d ), you could write your own integer-only version of sprintf and save several kilobytes of code space In fact, a few...

Ngày tải lên: 05/08/2014, 10:21

... type of embedded software development described here processor family A set of related processors, usually successive generations from the same manufacturer For example, Intel's 80x86 family ... consists of a set of function calls, or software interrupts, and a periodic clock tick The operating system is responsible for deciding which task should be using the processor at a given time and for ... with the help of a device programmer embedded system A combination of computer hardware and software, and perhaps additional mechanical or other parts, designed to perform a specific function Contrast...

Ngày tải lên: 05/08/2014, 10:21

... packed full of information about hardware design and embedded system development that every embedded software engineer should understand to be effective Brown, John Forrest Embedded Systems Programming ... Ritchie The C Programming Language Englewood Cliffs, N.J.: Prentice-Hall, 1988 A concise explanation of C's syntax and semantics direct from the founding fathers A necessary component of any programmer's ... for embedded systems discussion This one tends to focus more heavily on real-time scheduling issues, however, so not all of the information is relevant A list of FAQs from this group can be found...

Ngày tải lên: 05/08/2014, 10:21

... competition for ML and Haskell? ◦ (Note: Java has many but not all of the above features) A brief history of fun in C#  C# 1.0: ◦ First-class functions (delegates), created only from named methods ... Unification/constraint-based type inference ◦ True laziness Closures might surprise you  Guess the output var funs = new Func[5]; // Array of functions of type int→int for (int i = 0; i

Ngày tải lên: 23/10/2014, 15:20

... 120];; No Side Effects & Referential Transparency COMS W4115 - PLT Columbia University 17 April 24, 2013 Benefits of Functional Programming No Side Effects Examples: Side Effect: • • • a function or ... University April 24, 2013 Outline I II III IV What is Functional Programming? Lambda Calculus' Influence on Functional Programming Benefits of Functional Programming OCaml in Action: An Entire Interpreter ... 15 April 24, 2013 Outline I II III IV What is Functional Programming? Lambda Calculus' Influence on Functional Programming Benefits of Functional Programming OCaml in Action: An Entire Interpreter...

Ngày tải lên: 24/10/2014, 22:24

... weeks for key programming- language concepts – Focus on the universal foundations Today: Staff introduction; course mechanics Why and how to study programming languages Caml and functional- programming ... weeks for key programming- language concepts – Focus on the universal foundations Today: Staff introduction; course mechanics Why and how to study programming languages Caml and functional- programming ... code-file available and useful Then use our new language to learn – Functional programming – Idioms using higher-order functions – Benefits of not mutating variables Then use Caml to define other...

Ngày tải lên: 24/10/2014, 22:27