FirstSteps01Expressions.sc

package day01session01.first_steps

/*
 * This file is part of the "Scala Hack Session".
 *
 * Scala Hack Session is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Scala Hack Session is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Scala Hack Session.  If not, see <http://www.gnu.org/licenses/>.
 *
 * =================================================================================
 *
 */
object FirstSteps01Expressions {

  //This println function respectively method prints out the given parameter.
  //The output is on the right starting with "> ...."
  //Also note that a ";" at the end of the line is not required. Details: http://java.dzone.com/articles/scala-wonderland-semicolons
  println("Welcome Hacker! You have entered Level 1 of Scala Hack Session")
                                                  //> Welcome Hacker! You have entered Level 1 of Scala Hack Session

                                                  
  //try and print "Hello, World"
  
  //now print a number like 1. Note: do not use "1", just 1
  //Enter your code in the next line
  //NOTE: don't be confused about the "???". As a result a NotImplementedError is shown.
  //Below there are more ??? without an error. The reason is the that worksheets are processed top-down.
  //once you have replaced the first "???" the IDE parses the output and then the next ??? shows an error.
  ???                                             //> scala.NotImplementedError: an implementation is missing
                                                  //| 	at scala.Predef$.$qmark$qmark$qmark(Predef.scala:252)
                                                  //| 	at day01session01.first_steps.FirstSteps01Expressions$$anonfun$main$1.ap
                                                  //| ply$mcV$sp(day01session01.first_steps.FirstSteps01Expressions.scala:37)
                                                  //| 	at org.scalaide.worksheet.runtime.library.WorksheetSupport$$anonfun$$exe
                                                  //| cute$1.apply$mcV$sp(WorksheetSupport.scala:76)
                                                  //| 	at org.scalaide.worksheet.runtime.library.WorksheetSupport$.redirected(W
                                                  //| orksheetSupport.scala:65)
                                                  //| 	at org.scalaide.worksheet.runtime.library.WorksheetSupport$.$execute(Wor
                                                  //| ksheetSupport.scala:75)
                                                  //| 	at day01session01.first_steps.FirstSteps01Expressions$.main(day01session
                                                  //| 01.first_steps.FirstSteps01Expressions.scala:22)
                                                  //| 	at day01session01.first_steps.FirstSteps01Expressions.main(day01session0
                                                  //| 1.first_steps.FirstSteps01Expressions.scala)
  //====================== Arithmetic Expressions

  //Try adding two values like 40 and 2
  ???

  //next, add 1.5 to 2.5:
  ???

  //try with more operands like: 5 times 8 plus 2
  ???
  //what if you put the plus in front? 2 plus 5 times 8?
  ???
  //what about using brackets? (2 + 5) * 8
  ???
  //what is the result of 15 modulo 4 multiplied with 2?
  ???
}