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Merge pull request #3942 from panaali/patch-2

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[scala/en] - clarify `return` keyword usage
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Max Schumacher 2020-07-07 15:30:16 +02:00 committed by GitHub
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@ -252,7 +252,7 @@ weirdSum(2, 4) // => 16
// The return keyword exists in Scala, but it only returns from the inner-most
// 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:
// It has no effect on anonymous functions. For example here you may expect foo(7) should return 17 but it returns 7:
def foo(x: Int): Int = {
val anonFunc: Int => Int = { z =>
if (z > 5)
@ -260,9 +260,10 @@ def foo(x: Int): Int = {
else
z + 2 // This line is the return value of anonFunc
}
anonFunc(x) // This line is the return value of foo
anonFunc(x) + 10 // This line is the return value of foo
}
foo(7) // => 7
/////////////////////////////////////////////////
// 3. Flow Control