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-rw-r--r--scala.html.markdown15
1 files changed, 11 insertions, 4 deletions
diff --git a/scala.html.markdown b/scala.html.markdown
index 5a0cc0ff..775956cb 100644
--- a/scala.html.markdown
+++ b/scala.html.markdown
@@ -189,6 +189,8 @@ sSquared.reduce (_+_)
// The filter function takes a predicate (a function from A -> Boolean) and
// selects all elements which satisfy the predicate
List(1, 2, 3) filter (_ > 2) // List(3)
+
+case class Person(name: String, age: Int)
List(
Person(name = "Dom", age = 23),
Person(name = "Bob", age = 30)
@@ -197,6 +199,7 @@ List(
// Scala a foreach method defined on certain collections that takes a type
// returning Unit (a void method)
+val aListOfNumbers = Set(1,2,3,45,234)
aListOfNumbers foreach (x => println(x))
aListOfNumbers foreach println
@@ -255,6 +258,7 @@ def showNumbersInRange(a:Int, b:Int):Unit = {
if (a < b)
showNumbersInRange(a + 1, b)
}
+showNumbersInRange(1,14)
@@ -270,15 +274,13 @@ if (x == 11) println ("yeah") else println("nay")
println(if (x == 10) "yeah" else "nope")
val text = if (x == 10) "yeah" else "nope"
-var i = 0
-while (i < 10) { println("i " + i); i+=1 }
-
// Object oriented features
// Classname is Dog
-class Dog {
+class Dog(br: String) {
+ var breed: String = br
//A method called bark, returning a String
def bark: String = {
// the body of the method
@@ -286,6 +288,11 @@ class Dog {
}
}
+val mydog = new Dog("greyhound")
+println(mydog.breed) // => "greyhound"
+println(mydog.bark) // => "Woof, woof!"
+
+
// Classes can contain nearly any other construct, including other classes,
// functions, methods, objects, case classes, traits etc.