From e5d8895c8e837ac8fd0b7272195d0d99afbf589b Mon Sep 17 00:00:00 2001 From: Sam Zaydel Date: Sun, 22 Jun 2014 06:20:12 -0700 Subject: [PATCH] Should have more detail about named return values. There was not a section about named return values, and it feels like it is a valuable and important enough thing to learn early on. If nothing else, when looking at someone else's code this may be a point of confusion. --- go.html.markdown | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/go.html.markdown b/go.html.markdown index bb6b04eb..2e68a25c 100644 --- a/go.html.markdown +++ b/go.html.markdown @@ -116,6 +116,16 @@ can include line breaks.` // Same string type. learnFlowControl() // Back in the flow. } +// It is possible, unlike in many other languages for functions on go +// to have named return values. +// We just have to assign a name to the type being returned in the function +// declaration line. This allows us to easily return from multiple points +// in a function as well as to only use the return keyword, without anything further. +func learnNamedReturns(x, y int) (z int) { + z = x * y + return // z is implicit here, because we named it earlier. +} + // Go is fully garbage collected. It has pointers but no pointer arithmetic. // You can make a mistake with a nil pointer, but not by incrementing a pointer. func learnMemory() (p, q *int) {