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init関数のふしぎ #golang ref: https://qiita.com/tenntenn/items/7c70e3451ac783999b4f
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| package main | |
| import ( | |
| "fmt" | |
| ) | |
| func init() { | |
| fmt.Println("hello, init") | |
| } | |
| func main() { | |
| fmt.Println("Hello, main") | |
| } |
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| package main | |
| import ( | |
| "fmt" | |
| ) | |
| func init() { | |
| fmt.Println("hello, init") | |
| } | |
| func main() { | |
| fmt.Println("Hello, main") | |
| } |
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| package main | |
| import ( | |
| "fmt" | |
| ) | |
| var msg = message() | |
| func message() string { | |
| return "Hello" | |
| } | |
| func init() { | |
| fmt.Print(msg) | |
| } | |
| func main() { | |
| fmt.Println(", playground") | |
| } |
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| package main | |
| import ( | |
| "fmt" | |
| ) | |
| var msg = message() | |
| func message() string { | |
| return "Hello" | |
| } | |
| func init() { | |
| fmt.Print(msg) | |
| } | |
| func main() { | |
| fmt.Println(", playground") | |
| } |
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| package main | |
| import ( | |
| "fmt" | |
| ) | |
| func init() { | |
| fmt.Print("hello") | |
| } | |
| func init() { | |
| fmt.Println(", init") | |
| } | |
| func main() { | |
| } |
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| package main | |
| import ( | |
| "fmt" | |
| ) | |
| func init() { | |
| fmt.Print("hello") | |
| } | |
| func init() { | |
| fmt.Println(", init") | |
| } | |
| func main() { | |
| } |
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| package main | |
| import ( | |
| "fmt" | |
| "runtime" | |
| ) | |
| func init() { | |
| var pcs [1]uintptr | |
| runtime.Callers(1, pcs[:]) | |
| fn := runtime.FuncForPC(pcs[0]) | |
| fmt.Println(fn.Name()) | |
| } | |
| func init() { | |
| var pcs [1]uintptr | |
| runtime.Callers(1, pcs[:]) | |
| fn := runtime.FuncForPC(pcs[0]) | |
| fmt.Println(fn.Name()) | |
| } | |
| func main() { | |
| var pcs [1]uintptr | |
| runtime.Callers(1, pcs[:]) | |
| fn := runtime.FuncForPC(pcs[0]) | |
| fmt.Println(fn.Name()) | |
| } |
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| package main | |
| import ( | |
| "fmt" | |
| "runtime" | |
| ) | |
| func init() { | |
| var pcs [1]uintptr | |
| runtime.Callers(1, pcs[:]) | |
| fn := runtime.FuncForPC(pcs[0]) | |
| fmt.Println(fn.Name()) | |
| } | |
| func init() { | |
| var pcs [1]uintptr | |
| runtime.Callers(1, pcs[:]) | |
| fn := runtime.FuncForPC(pcs[0]) | |
| fmt.Println(fn.Name()) | |
| } | |
| func main() { | |
| var pcs [1]uintptr | |
| runtime.Callers(1, pcs[:]) | |
| fn := runtime.FuncForPC(pcs[0]) | |
| fmt.Println(fn.Name()) | |
| } |
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| main.init.1 | |
| main.init.2 | |
| main.main |
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| package main | |
| import "fmt" | |
| func init() { | |
| fmt.Println("hoge") | |
| } | |
| func main() { | |
| init() | |
| } |
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| package main | |
| import "fmt" | |
| func init() { | |
| fmt.Println("hoge") | |
| } | |
| func main() { | |
| init() | |
| } |
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| tmp/sandbox671239315/main.go:10: undefined: init |
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