# HG changeset patch
# User fahad
# Date 1415449177 0
# Node ID 6b8e3d232361798c33d8923a71fd89c6cd44ef15
# Parent  4f8a9ed0f26daf4b90e3c70390405c77546f5197
Test changes through linux

diff -r 4f8a9ed0f26d -r 6b8e3d232361 Fahad/Scala/Chapter5.sc
--- a/Fahad/Scala/Chapter5.sc	Thu Nov 06 20:08:39 2014 +0000
+++ b/Fahad/Scala/Chapter5.sc	Sat Nov 08 12:19:37 2014 +0000
@@ -1,37 +1,38 @@
+
 package greeter
-
+
 object Chapter5 {
-  println("Welcome to the Scala worksheet")       //> Welcome to the Scala worksheet
-
+  println("Welcome to the Scala worksheet")       //> Welcome to the Scala worksheet
+
   /////////////////////////////////////////////////////////////////////////////
   //   CHAPTER 5: FIRST-CLASS FUNCTIONS
-
+
   /*
   // Write a function to sumall integers between two given numbers a and b
   def sumInts(a: Int, b: Int): Int =
     if (a > b) 0 else a + sumInts(a + 1, b)
-
+
   sumInts(1, 5)
-
+
   //Write a function to sum the squares of all integers between two given numbers a and b
   def square(x: Int): Int = x * x
   def sumSquares(a: Int, b: Int): Int =
     if (a > b) 0 else square(a) + sumSquares(a + 1, b)
-
+
   square(5)
-
+
   //Write a function to sum the powers 2n of all integers n between two given numbers a and b:
   def powerOfTwo(x: Int): Int = if (x == 0) 1 else 2 * powerOfTwo(x - 1)
   def sumPowersOfTwo(a: Int, b: Int): Int =
     if (a > b) 0 else powerOfTwo(a) + sumPowersOfTwo(a + 1, b)
-
+
   sumPowersOfTwo(2, 4)
   */
-
+
   /*
   def sum(f: Int => Int, a: Int, b: Int): Int =
     if (a > b) 0 else f(a) + sum(f, a + 1, b)
-
+
   //def sumInts(a: Int, b: Int): Int = sum(id, a, b)
   //def sumInts(a: Int, b: Int): Int = sum((x: Int) => x, a, b)
   def sumInts(a: Int, b: Int): Int = sum(x => x, a, b)
@@ -44,29 +45,29 @@
 	def square(x: Int): Int = x * x
 	*/
 	def powerOfTwo(x: Int): Int = if (x == 0) 1 else 2 * powerOfTwo(x - 1)
-                                                  //> powerOfTwo: (x: Int)Int
-  
-
+                                                  //> powerOfTwo: (x: Int)Int
+  
+
   // 5.2: Currying
-
+
   def sum(f: Int => Int): (Int, Int) => Int = {
     def sumF(a: Int, b: Int): Int =
       if (a > b) 0 else f(a) + sumF(a + 1, b)
     sumF
-  }                                               //> sum: (f: Int => Int)(Int, Int) => Int
-
-  def sumInts = sum(x => x)                       //> sumInts: => (Int, Int) => Int
-  def sumSquares = sum(x => x * x)                //> sumSquares: => (Int, Int) => Int
-  def sumPowersOfTwo = sum(powerOfTwo)            //> sumPowersOfTwo: => (Int, Int) => Int
-  
-  sumSquares(1,10) + sumPowersOfTwo(10,20)        //> res0: Int = 2096513
-  sum(x => x * x)(2,4)                            //> res1: Int = 29
+  }                                               //> sum: (f: Int => Int)(Int, Int) => Int
+
+  def sumInts = sum(x => x)                       //> sumInts: => (Int, Int) => Int
+  def sumSquares = sum(x => x * x)                //> sumSquares: => (Int, Int) => Int
+  def sumPowersOfTwo = sum(powerOfTwo)            //> sumPowersOfTwo: => (Int, Int) => Int
+  
+  sumSquares(1,10) + sumPowersOfTwo(10,20)        //> res0: Int = 2096513
+  sum(x => x * x)(2,4)                            //> res1: Int = 29
 
 	// 5.3: Finding Fixed Points of Functions
 	
-	val tolerance = 0.001                     //> tolerance  : Double = 0.001
+	val tolerance = 0.001                     //> tolerance  : Double = 0.001
 	def isCloseEnough(x: Double, y: Double) = Math.abs((x-y) / x) < tolerance
-                                                  //> isCloseEnough: (x: Double, y: Double)Boolean
+                                                  //> isCloseEnough: (x: Double, y: Double)Boolean
 	def fixedPoint(f: Double => Double)(firstGuess: Double) = {
 		def iterate(guess: Double): Double = {
 			val next = f(guess)
@@ -74,7 +75,7 @@
 			else iterate(next)
 		}
 		iterate(firstGuess)
-	}                                         //> fixedPoint: (f: Double => Double)(firstGuess: Double)Double
+	}                                         //> fixedPoint: (f: Double => Double)(firstGuess: Double)Double
 	
 	
 	
@@ -102,5 +103,5 @@
 	
 	
 	
-	
-}
\ No newline at end of file
+	
+}