chapter 8  functional programming in scala

... 8TOP-DOWN STEPWISE REFINEMENT of the main principles of structured programming Another principle of structured programming is top-down, stepwise refinement Develop a class-averaging program that ... print the average else Trang 14THE FINAL C++ PROGRAM Final step: After coding, we come to the following C++ program #include <iostream.h> #include <iomanip.h> int main() ... to be performed This results in the following first refinement First Refinement: Initialize variables Input, sum and count the exam grades Calculate and print the class average Here

Ngày tải lên: 29/03/2017, 18:16

... List Transforming a List Finding Elements Reusing Lambda Expressions Using Lexical Scoping and Closures Picking an Element Reducing a Collection to a Single Value Joining Elements Recap 19 ... Separating Concerns Using Lambda Expressions Delegating Using Lambda Expressions Decorating Using Lambda Expressions A Peek into the default Methods Creating Fluent Interfaces Using Lambda ... Being Lazy Delayed Initialization Lazy Evaluations Leveraging the Laziness of Streams Creating Infinite, Lazy Collections Recap 105 105 110 113 117 121 Optimizing Recursions Using

Ngày tải lên: 12/03/2019, 16:38

... describing g(x) = x + 2 Here’s how to define f.g (read f of g) by using Func<>: Func<Func<int,int>,Func<int,int>,int,int> fog = (f1,g1,x) => f1.Invoke(g1.Invoke(x)); In ... Trang 1Shelve in.NETUser level: principles Thinking in LINQ addresses the differences between these two by providing a set of succinct recipes arranged in several groups, including: • Basic and ... this for you To think of it another way, functional programming is programming using functions but without worrying about the internal state of the variables Functional programming allows programmers

Ngày tải lên: 05/11/2019, 14:30

... Shut Down Point P < Minimum AVC $71 < $74 Trang 15Output Determination in Pure Competition in the Short Run Should this firm produce? Yes, if price is equal to, or greater than, minimum average ... Firm: Marginal Revenue – Marginal Cost Approach (Price = $131) (1) Total Product (Output) (2) Average Fixed Cost (AFC) (3) Average Variable Costs (AVC) (4) Average Total Cost (ATC) (5) Marginal Cost ... (TR) Break-Even Point (Normal Profit) Break-Even Point (Normal Profit) Maximum Economic Profit $299 Total Economic Profit $299 P=$131 Total Cost, (TC) Trang 10The Profit-Maximizing Output for a

Ngày tải lên: 04/02/2020, 12:20

... TỬ Programming Engineering in Mechatronics Giảng viên: TS Nguyễn Thành Hùng Đơn vị: Bộ môn Cơ điện tử, Viện Cơ khí Hà Nội, 2020 Chapter II Modular programming in C++ • Structured programming ... parts): Function definition The basics of functions ❖ Defining, calling and declaring functions The basics of functions ❖ Defining, calling and declaring functions • The steps of calling a function ... can be redefined again, even with a different content It can be undefined by using the #undef directive Original source code Substituted code int main() { #define MACRO(x) (x) + int a = MACRO(12);

Ngày tải lên: 15/02/2022, 19:02

... functions❖ Defining, calling and declaring functions • C++ Standard Library provides us many useful predefined functions Trang 8The basics of functions❖ Defining, calling and declaring functions ... Trang 46❖ Defining, calling and declaring functions❖ The return value of functions ❖ Parametrizing functions ❖ Programming with functions The basics of functions Trang 47❖ Programming with functions▪ ... Inline functions ❖ Overloading (redefining) function names ❖ Function templates Trang 63❖ Inline functionsHow to use functions on a more professional level? Trang 65❖ Overloading (redefining)

Ngày tải lên: 11/03/2022, 15:21

... 3Linear programming problemsA linear programming problemis a problem of maximizing or minimizing a linear function subject to linear constraints The constraints may be equalities or inequalities ... 8: Linear ProgrammingNguyen Thi Minh Tam ntmtam.vnua@gmail.com December 17, 2020 Trang 21 8.1 Graphical solution of linear programming problems2 8.2 Application of linear programming Trang 3Linear ... of linear programmingLinear programming is a vital tool for business managers who need to allocate finite resources such as labour, machine time or raw materials to maximise profits or minimise

Ngày tải lên: 21/05/2022, 09:58

... expression) Intuitively, each patternPkis matched to every element ofLk, thus determining a bindingB; if substituting all bound values makes all conditions evaluate to true, the value obtained by ... for Internetcommunication apps: • WhatsApp’s communication services are written in Erlang • Facebook Chat (in the past) Trang 11Why Erlang?We’ve faced many challenges in meeting the ever-growing ... • Integers: arbitrary-size integers with the usual operations • Atoms: roughly corresponding to identifiers • Floats: 64-bit floating point numbers • References: globally unique symbols • Binaries:

Ngày tải lên: 01/06/2024, 14:27

... provides a different definition by explaining consumer behaviour as: " the study of the buying units and the exchange processes involved in acquiring, consuming, and disposing of goods, services, ... consumers display in searching for, purchasing, using, evaluating, and disposing of products, services, and ideas.” Schiffman & Kanuk (1997) elaborate on the definition by explaining that consumer ... In addition, after more than 10 years of construction, Vietnam has opened the first high-speed train line in Hanoi in 2021 and the first metro line in HCMC is expected to open in 2023 According

Ngày tải lên: 23/07/2024, 21:56

... ScalaExamples/src/main/scala/com/mblinn/mbfpp/oo/tinyweb/stepthree/HttpData.scala package com.mblinn.mbfpp.oo.tinyweb.stepthree case class HttpRequest(headers: Map[String, String], body: String, path: String) ... handling the case when we can’t find a controller for a particular request The code for the Scala TinyWeb is below: ScalaExamples/src/main/scala/com/mblinn/mbfpp/oo/tinyweb/stepfour/Tinyweb.scala ... containing "Friendly Greetings:", as the following code shows: public String renderView(Map<String, List<String>> model) { List<String> greetings = model.get("greetings");

Ngày tải lên: 12/03/2019, 14:23

... ScalaExamples/src/main/scala/com/mblinn/mbfpp/oo/tinyweb/stepthree/HttpData.scala package com.mblinn.mbfpp.oo.tinyweb.stepthree case class HttpRequest(headers: Map[String, String], body: String, path: String) ... handling the case when we can’t find a controller for a particular request The code for the Scala TinyWeb is below: ScalaExamples/src/main/scala/com/mblinn/mbfpp/oo/tinyweb/stepfour/Tinyweb.scala ... containing "Friendly Greetings:", as the following code shows: public String renderView(Map<String, List<String>> model) { List<String> greetings = model.get("greetings");

Ngày tải lên: 05/11/2019, 14:29

... 21Same name with different argument listsExample: Lesson 8.5 Microwave_instruction ( ) ;Microwave_instruction (int); Microwave_instruction (int, int); ... 7      private_members;      public:       public_members;}; Trang 8Listed as in ordinary declarations – Type and identifier in sequence Class definition does NOT reserve memory for class members – Memory reserved when class declared ... 10Those not included inside class definition – Require class name and scope resolution operator  (::) to immediately precede function name } Trang 11– Declaration of objects of a particular class  (instances)

Ngày tải lên: 30/01/2020, 02:18

... drinking As for Baisemeaux, no longer touching anything that was on the table, he again took up the order and examined it in every way This investigation, under ordinary circumstances, would have made ... burning behind the door This flickering glare prevented the sight from resting steadily on any object It multiplied tenfold the changing forms and shadows of the place by its wavering uncertainty ... not move an inch, nor articulate a sound Nothing could be heard in that large chamber but the buzzing of a little moth which was fluttering about the candles Aramis, without even deigning to look

Ngày tải lên: 03/07/2014, 09:20

... type Int => Int, which indicates that f expects an Int and will also return an Int (The type of a function expecting an Int and a String and returning an Int would be written as (Int,String) => Int.) ... factorial(n: Int): Int = { def go(n: Int, acc: Int): Int = if (n

Ngày tải lên: 01/08/2014, 17:15

... comfortable doing all of these things: * Manipulating path information from the command line * Filtering lists using filter instead of list comprehensions * Mapping lists using map instead of list ... which you studied in depth in Chapter 13, Unit Testing 16.2 Finding the path When running Python scripts from the command line, it is sometimes useful to know where the currently running script is ... appeared in the original You could accomplish the same thing using list comprehensions, as you saw in Section 4.5, “Filtering Lists” You could also accomplish the same thing with a for loop Depending...

Ngày tải lên: 24/10/2013, 09:15

... Oriented Programming Summary CHAPTER 2: PUTTING FUNCTIONAL PROGRAMMING INTO A MODERN CONTEXT Managing Side Effects Agile Programming Methodologies Declarative Programming Functional Programming Is ... tch calcLines :: Int -> Int -> String calcLines line maxp = let ch = (ord ‘A’) + line in let l = (calcLine ch line maxp) ++ “\n” in if line == maxp then l else l ++ (calcLines (line+1) maxp) ++ ... www.it-ebooks.info Putting Functional Programming into a Modern Context WHAT’ S IN THIS CHAPTER? ➤ Managing side effects ➤ Agile programming methodologies ➤ Declarative programming ➤ Functional programming...

Ngày tải lên: 28/04/2014, 16:01

... professional looking GUIs Containers – Top level containers  Containers are the windows that can hold other windows or GUI components • JFrame, JPanel, Box,…  In a GUI, there is a main window, top-level ... Event-handling options • Handling events • Handling events interfaces • Handling events • Handling events classes with separate listeners by implementing with named inner classes with anonymous inner ... 1.02 • Easy building of simple-looking interfaces • GUIs depend on the platform program is running on  Swing • GUI library added to Java starting in Java 1.1 • Professional looking GUIs that follow...

Ngày tải lên: 13/05/2014, 10:43

... commonly used commands in a program 44 Toolbars – Constructors and Methods       JToolBar() JToolBar(String titleString) JToolBar(int orientation) JToolBar(String titleString, int orientation) ... returns the item at the specified index  int getSelectedIndex() • returns the position of selected item  void setSelectedIndex(int index) • sets the selected index  Object getSelectedItem() • returns ... Constructors • JTextArea(int rows, int cols) – constructs a new text area with number of rows and columns • JTextArea(String text, int rows, int cols) – constructs a new text area with an initial text Example:...

Ngày tải lên: 13/05/2014, 10:43

... (Prasad) ScalaMulti 34 Closures scala> val inc = 10 inc: Int = 10 scala> def incre(x: Int) = x + inc incre: (Int)Int scala> def app(y: Int, g: (Int=>Int)) = g(y) app: (Int,(Int) => Int)Int scala> ... (Prasad) ScalaMulti 32 Curried Functions scala> def add(x: Int, y: Int) = x + y add: (Int,Int)Int scala> add(1,3) res0: Int = scala> def addc(x: Int)(y: Int) = x + y addc: (Int)(Int)Int scala> ... res1: Int = CS3180 (Prasad) ScalaMulti 33 Partial Application scala> def addc(x: Int)(y: Int) = x + y addc: (Int)(Int)Int scala> val z = addc(1) _ z: (Int) => Int = scala> z(3) res2: Int...

Ngày tải lên: 24/10/2014, 13:47

... however, as D's income declines relative to R's income, the slope of the indifference curve becomes shallower, indicating that D is willing to sacrifice less income to increase R's income by an ... house can be bought in Six Mile (with much more land) for $100,000 The engineer you are interested in hiring is earning $100,000 a year in Six Mile In your interviews with the engineer, she tells ... maximizes utility by not donating any income to R At point A, the constraint is steeper than the indifference curve, resulting in a corner solution D does not donate any income increase to R: the first...

Ngày tải lên: 17/12/2013, 15:18