@@ -6573,6 +6572,48 @@ for cond { S() } is the same as for ; cond ; { S() }
for { S() } is the same as for true { S() }
++Each iteration has its own separate declared variable (or variables) +[Go 1.22]. +The variable used by the first iteration is declared by the init statement. +The variable used by each subsequent iteration is declared implicitly before +executing the post statement and initialized to the value of the previous +iteration's variable at that moment. +
+ +
+var prints []func()
+for i := 0; i < 5; i++ {
+ prints = append(prints, func() { println(i) })
+ i++
+}
+for _, p := range prints {
+ p()
+}
+
+
++prints +
+ ++0 +3 +5 ++ +
+Prior to [Go 1.22], iterations share one set of variables +instead of having their own separate variables. +In that case, the example above prints +
+ ++6 +6 +6 ++
range clause
@@ -6677,9 +6718,10 @@ The iteration variables may be declared by the "range" clause using a form of
short variable declaration
(:=).
In this case their types are set to the types of the respective iteration values
-and their scope is the block of the "for"
-statement; they are re-used in each iteration.
-If the iteration variables are declared outside the "for" statement,
+and their scope is the block of the "for" statement;
+each iteration has its own separate variables [Go 1.22]
+(see also "for" statements with a ForClause).
+If the iteration variables are declared outside the “for” statement,
after execution their values will be those of the last iteration.