Your tasks Implement the functions marked with ??? in withProb.scala. （as shown in below） package withProb: /** * NOTE: The seed should be System.nanoTime or something similar * in order to get real pseudo-randomness but we fix it now * for the sake of repeatability. */ val rand = new scala.util.Random(2105) /** * Executes the given code with probability "prob". * For instance, * doWithProb(30.0) { Console.println("I'm feeling lucky!") } * shall print the text to the console with probability of 30 percent. * * Note that you have to modify the type of the "thenAction" parameter so that it admits code * to be passed in "call-by-name" evaluation mode. * Please see the course material and * http://docs.scala-lang.org/tour/automatic-closures.html */ def doWithProb(prob: Double)(thenAction: Unit): Unit = require(0.0 <= prob && prob <= 100.0) ??? end doWithProb /** * The expression * withProb(prob) {choice1} otherwise {choice2} * returns the value of the first choice code with probability prob and * the value of the second choice with probability 1-prob. * * For instance, * val x = 2 * val y = 3 * val z: Int = withProb(30.0) {x*y} otherwise {0} * shall return 6 with 30% probability and 0 with 70% probability. * * Observe that we can also write a statement like * withProb(70.0) { println("first action") } otherwise { println("second action") } * The return value is just ignored. * * Note that you have to modify the types of the choice1 and choice2 parameters so that they admit code * with correct return type to be passed in "call-by-name" evaluation mode. * Again, please see the course material and especially * http://docs.scala-lang.org/tour/automatic-closures.html * for help. */ def withProb[T](prob: Double)(choice1: Any): withProbElse[T] = require(0.0 <= prob && prob <= 100.0) ??? end withProb protected class withProbElse[T](prob: Double, choice1: Any): def otherwise(choice2: Any): T = ??? end otherwise

Your tasks Implement the functions marked with ??? in withProb.scala. （as shown in below） package withProb: /** * NOTE: The seed should be System.nanoTime or something similar * in order to get real pseudo-randomness but we fix it now * for the sake of repeatability. */ val rand = new scala.util.Random(2105) /** * Executes the given code with probability "prob". * For instance, * doWithProb(30.0) { Console.println("I'm feeling lucky!") } * shall print the text to the console with probability of 30 percent. * * Note that you have to modify the type of the "thenAction" parameter so that it admits code * to be passed in "call-by-name" evaluation mode. * Please see the course material and * http://docs.scala-lang.org/tour/automatic-closures.html */ def doWithProb(prob: Double)(thenAction: Unit): Unit = require(0.0 <= prob && prob <= 100.0) ??? end doWithProb /** * The expression * withProb(prob) {choice1} otherwise {choice2} * returns the value of the first choice code with probability prob and * the value of the second choice with probability 1-prob. * * For instance, * val x = 2 * val y = 3 * val z: Int = withProb(30.0) {xy} otherwise {0} shall return 6 with 30% probability and 0 with 70% probability. * * Observe that we can also write a statement like * withProb(70.0) { println("first action") } otherwise { println("second action") } * The return value is just ignored. * * Note that you have to modify the types of the choice1 and choice2 parameters so that they admit code * with correct return type to be passed in "call-by-name" evaluation mode. * Again, please see the course material and especially * http://docs.scala-lang.org/tour/automatic-closures.html * for help. */ def withProb[T](prob: Double)(choice1: Any): withProbElse[T] = require(0.0 <= prob && prob <= 100.0) ??? end withProb protected class withProbElse[T](prob: Double, choice1: Any): def otherwise(choice2: Any): T = ??? end otherwise

C++ for Engineers and Scientists

4th Edition

ISBN:9781133187844

Author:Bronson, Gary J.

Publisher:Bronson, Gary J.

Chapter5: Repetition Statements

Section5.5: A Closer Look: Loop Programming Techniques

Problem 12E: (Program) Write a program that tests the effectiveness of the rand() library function. Start by...

See similar textbooks

Your tasks

Implement the functions marked with ??? in withProb.scala. （as shown in below）

package withProb:

/**

* NOTE: The seed should be System.nanoTime or something similar

* in order to get real pseudo-randomness but we fix it now

* for the sake of repeatability.

val rand = new scala.util.Random(2105)

/**

* Executes the given code with probability "prob".

* For instance,

* doWithProb(30.0) { Console.println("I'm feeling lucky!") }

* shall print the text to the console with probability of 30 percent.

* Note that you have to modify the type of the "thenAction" parameter so that it admits code

* to be passed in "call-by-name" evaluation mode.

* Please see the course material and

* http://docs.scala-lang.org/tour/automatic-closures.html

def doWithProb(prob: Double)(thenAction: Unit): Unit =

require(0.0 <= prob && prob <= 100.0)

???

end doWithProb

/**

* The expression

* withProb(prob) {choice1} otherwise {choice2}

* returns the value of the first choice code with probability prob and

* the value of the second choice with probability 1-prob.

* For instance,

* val x = 2

* val y = 3

* val z: Int = withProb(30.0) {x*y} otherwise {0}

* shall return 6 with 30% probability and 0 with 70% probability.

* Observe that we can also write a statement like

* withProb(70.0) { println("first action") } otherwise { println("second action") }

* The return value is just ignored.

* Note that you have to modify the types of the choice1 and choice2 parameters so that they admit code

* with correct return type to be passed in "call-by-name" evaluation mode.

* Again, please see the course material and especially

* http://docs.scala-lang.org/tour/automatic-closures.html

* for help.

def withProb[T](prob: Double)(choice1: Any): withProbElse[T] =

require(0.0 <= prob && prob <= 100.0)

???

end withProb

protected class withProbElse[T](prob: Double, choice1: Any):

def otherwise(choice2: Any): T =

???

end otherwise

end withProbElse

Expert Solution

Step by step

Solved in 3 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.