removed controversial performance info, fixed recursion info and typos

This commit is contained in:
Pavel Kazlou 2015-10-31 16:12:18 +03:00
parent e56bc6cbca
commit b336e81086

View File

@ -231,7 +231,7 @@ r foreach println
(5 to 1 by -1) foreach (println)
// A while loops
// A while loop
var i = 0
while (i < 10) { println("i " + i); i += 1 }
@ -239,17 +239,18 @@ while (i < 10) { println("i " + i); i += 1 } // Yes, again. What happened? Why
i // Show the value of i. Note that while is a loop in the classical sense -
// it executes sequentially while changing the loop variable. while is very
// fast, faster that Java loops, but using the combinators and
// comprehensions above is easier to understand and parallelize
// fast, but using the combinators and comprehensions above is easier
// to understand and parallelize
// A do while loop
// A do-while loop
i = 0
do {
println("i is still less than 10")
i += 1
} while (i < 10)
// Tail recursion is an idiomatic way of doing recurring things in Scala.
// Recursion is the idiomatic way of repeating an action in Scala (as in most
// other functional languages).
// Recursive functions need an explicit return type, the compiler can't infer it.
// Here it's Unit.
def showNumbersInRange(a: Int, b: Int): Unit = {