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authorDivay Prakash <divayprakash@users.noreply.github.com>2020-02-09 22:17:35 +0530
committerGitHub <noreply@github.com>2020-02-09 22:17:35 +0530
commitccb727ebd36bf080d07a9e536a11fac61243d90c (patch)
tree18a5dd1d2c6c22e17f3a2a76b9d2cc3decc25819
parent59b1ba43e0dff252a562ae9822627045eef7d050 (diff)
parent3869472f749e74f554eda136654ec9d098cf0fb7 (diff)
Merge pull request #3848 from petrroll/patch-1
[go/en] Clarify safety of taking local variable address.
-rw-r--r--go.html.markdown3
1 files changed, 2 insertions, 1 deletions
diff --git a/go.html.markdown b/go.html.markdown
index 49f1ade4..ec812f20 100644
--- a/go.html.markdown
+++ b/go.html.markdown
@@ -168,10 +168,11 @@ func learnNamedReturns(x, y int) (z int) {
// 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.
+// Unlike in C/Cpp taking and returning an address of a local varible is also safe.
func learnMemory() (p, q *int) {
// Named return values p and q have type pointer to int.
p = new(int) // Built-in function new allocates memory.
- // The allocated int is initialized to 0, p is no longer nil.
+ // The allocated int slice is initialized to 0, p is no longer nil.
s := make([]int, 20) // Allocate 20 ints as a single block of memory.
s[3] = 7 // Assign one of them.
r := -2 // Declare another local variable.