diff options
Diffstat (limited to 'scala.html.markdown')
| -rw-r--r-- | scala.html.markdown | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/scala.html.markdown b/scala.html.markdown index 016e2b4f..7429ac9a 100644 --- a/scala.html.markdown +++ b/scala.html.markdown @@ -253,16 +253,20 @@ weirdSum(2, 4) // => 16 // def that surrounds it. // WARNING: Using return in Scala is error-prone and should be avoided. // It has no effect on anonymous functions. For example: -def foo(x: Int): Int = { - val anonFunc: Int => Int = { z => +def addTenButMaybeTwelve(x: Int): Int = { + val anonMaybeAddTwo: Int => Int = { z => if (z > 5) - return z // This line makes z the return value of foo! + return z // This line makes z the return value of addTenButMaybeTwelve! else - z + 2 // This line is the return value of anonFunc + z + 2 // This line is the return value of anonMaybeAddTwo } - anonFunc(x) // This line is the return value of foo + anonMaybeAddTwo(x) + 10 // This line is the return value of addTenButMaybeTwelve } +addTenButMaybeTwelve(2) // Returns 14 as expected: 2 <= 5, adds 12 +addTenButMaybeTwelve(7) // Returns 7: 7 > 5, return value set to z, so + // last line doesn't get called and 10 is not added + ///////////////////////////////////////////////// // 3. Flow Control @@ -716,7 +720,7 @@ import scala.collection.immutable.{Map => _, Set => _, _} // Java classes can also be imported. Scala syntax can be used import java.swing.{JFrame, JWindow} -// Your programs entry point is defined in an scala file using an object, with a +// Your programs entry point is defined in a scala file using an object, with a // single method, main: object Application { def main(args: Array[String]): Unit = { |