diff options
author | Geoff Liu <cangming.liu@gmail.com> | 2014-11-11 17:42:28 -0800 |
---|---|---|
committer | Geoff Liu <cangming.liu@gmail.com> | 2014-11-11 17:42:28 -0800 |
commit | 1761ec868a2aedc1d7ed6bc3d4879c0662050923 (patch) | |
tree | 8a579b87524d0be9f0ed116731a6d90768ced393 /scala.html.markdown | |
parent | e784f52d33475b0cba059a0c07ad01b0e63578a9 (diff) | |
parent | ad951f2615175b917b7410e667ef91d119468c5a (diff) |
Merge
Diffstat (limited to 'scala.html.markdown')
-rw-r--r-- | scala.html.markdown | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/scala.html.markdown b/scala.html.markdown index c8932c86..6112faa6 100644 --- a/scala.html.markdown +++ b/scala.html.markdown @@ -204,6 +204,7 @@ def showNumbersInRange(a:Int, b:Int):Unit = { if (a < b) showNumbersInRange(a + 1, b) } +showNumbersInRange(1,14) // Conditionals @@ -218,9 +219,6 @@ 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 } - ################################################# ## 4. Data Structures @@ -292,7 +290,8 @@ d._2 And now we will explain what these are. */ -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 @@ -300,6 +299,11 @@ 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. @@ -388,6 +392,7 @@ 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, phoneNumber:String) List( Person(name = "Dom", age = 23), Person(name = "Bob", age = 30) @@ -396,6 +401,7 @@ List( // Scala a foreach method defined on certain collections that takes a type // returning Unit (a void method) +val aListOfNumbers = List(1, 2, 3, 4, 10, 20, 100) aListOfNumbers foreach (x => println(x)) aListOfNumbers foreach println |