Added solutions for chapter 1, exercise 1 to 5 and chapter 2 exercise 1 to 3

[Mironor]

Given #5 here are some solutions to the exercises solved so far (for ch1 and some of ch2) just to show that there is some progress in the 'exercise' package.
I will submit solutions to following chapters as soon as they are solved.

[Mironor]

Actually, blocked by this line (ch. 2 ex. 4):

Then, implement a producer thread that transfers a range of numbers 0 until 15 to the consumer thread that prints them.

It looks like it's something simple, but I only found Producer/Consumer implementations with Akka so far. Can you give some hint to the problem, please?

[axel22]

Nice.
We should also add the alternative solution g(f(x)).

[axel22]

I recommend that we keep the exercises for each chapter in separate packages, just like the chapter examples:

package org.learningconcurrency
package exercises
package ch1

The exercises themselves should be in separate files, for example Ex1.scala, Ex2.scala, and so on. This will allow easily finding them, and will unclutter the code, as Ex1.scala can contain multiple solutions for that exercise.

[axel22]

(I can also do the refactoring to separate files for you, if you want)

[axel22]

Then, implement a producer thread that transfers a range of numbers 0 until 15 to the consumer thread that prints them.

It looks like it's something simple, but I only found Producer/Consumer implementations with Akka so far. Can you give some hint to the problem, please?

Sure! The producer/consumer pattern is not specific to Akka and the actor model. It is a more general pattern in which one computation produces some values, and another computation takes those values and does something with them. Here, the consumer depends on the values created by the producer, and cannot proceed until they become available.

In this exercise, you need to:

• create a SyncVar
• create a thread that repetitively puts values into the SyncVar after getting true from isEmpty
• create a thread that repetitively does the opposite

Which one is the consumer, and which is the producer here?

[Mironor]

Thanks for taking time reviewing the solutions!

I just updated the PR with regards to your comments. If you could refactor the code with separate files, it would be great, this way I could see what exact file structure you have in mind.

[Mironor]

Just saw the hint on the exercise 4, that's exactly what I was looking for, thanks!

[axel22]

You're welcome, and thank you for contributing! :)

Here's the structure I meant:

c0a4981