Created
July 15, 2012 21:09
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go defer func
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| package main | |
| import ( | |
| "fmt" | |
| ) | |
| func f() (ret int) { | |
| defer func() { | |
| ret++ | |
| }() | |
| return 1 | |
| } | |
| func main() { | |
| fmt.Println(f()) | |
| } |
return doesn't actually return a value, it just ends the function's regular execution and sets the return values. those values can still be changed by a deferred function call, as your code demonstrates.
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This prints 2.
Problem: if defer() runs after 1 is returned, changing ret var after return 1 is returned, main() should print 1..