not-for-me

// 스칼라의 문법인 케이스 클래스와 패턴 매칭 코드로 살펴보기
// regular, non-encapsulated data structures 가 필요할 때 케이스 클래스 사용
// Programming In Scala 15장 예제 코드로 구성 됨

abstract class Expr
case class Var(name: String) extends Expr
case class Number(num: Double) extends Expr
case class UnOp(operator: String, arg: Expr) extends Expr
case class BinOp(operator: String, left: Expr, right: Expr) extends Expr

not-for-me

case class Dummy(a: Int, b: Double)

val obj1 = Dummy(1, 10.0)
val obj2 = Dummy(2, 20.0)
val obj3 = Dummy(1, 10.0)

obj1 == obj2
obj1 equals obj2

obj1 == obj3

not-for-me

public class EqualTest{
     public static void main(String []args){
         new EqualTest().test();
     }
     private void test() {
        Dummy obj1 = new Dummy(1, 10.0);
        Dummy obj2 = new Dummy(2, 20.0);
        Dummy obj3 = new Dummy(1, 10.0);
        
        System.out.println("obj1 == obj2: " + (obj1 == obj2) + " / obj1.equals(obj2): " + obj1.equals(obj2) );

not-for-me

int _twoExponential(int exponent, int acc) {
  if ( exponent == 0 ) {
    return acc;
  }
  
  acc *= 2;
  return _twoExponential(--exponent, acc);
}

int exponential(int num) {

not-for-me

package nfm.ex06

/**
 * Programming In Scala 2/e List 6.5 코드
 * 분수 Class
 * @param n 분자
 * @param d 분모
 */

/* 스칼라에 있는 문법: Class에서 기본 생성자 선언 가능

not-for-me

float tempC;
int reading;
int tempPin = 0;
void setup()
{
  Serial.begin(9600);
  analogReference(INTERNAL);
}
void loop()
{

not-for-me

//Arduino Sample Code for SHT1x Humidity and Temperature Sensor
//www.DFRobot.com
//Version 1.0
 
#include <SHT1x.h>
 
// Specify data and clock connections and instantiate SHT1x object
#define dataPin  10
#define clockPin 11
SHT1x sht1x(dataPin, clockPin);

not-for-me

# coding: utf-8

from xlwt import Workbook

book = Workbook()
sheet1 = book.add_sheet(u'Ex Sheet1')
sheet2 = book.add_sheet(u'Ex Sheet2')

sheet1.write(0,0, u'Name')
sheet1.write(0,1, u'Sex')

not-for-me

# coding: utf-8

from xlrd import open_workbook

wb = open_workbook('simple.xls')
for sheet in wb.sheets():
	print(u'Sheet:' + sheet.name)

print("Number of Sheets: " + str(wb.nsheets))

not-for-me

  def factorial(n: Int): Int = {
    def loop(acc: Int, n: Int): Int =
      if (n == 0) acc
      else loop(acc*n, n-1)
    loop(1, n)
  }