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package main
import "fmt"
func D(i int) int {
return i * i * i
}
func C(i int) int {
return D(i+10) + 20
}
func B(i int) int {
return i * D(i)
}
func A(i int) int {
d := 10 + B(i)
return d + C(i)
}
func second(i int) int {
if i > 0 {
return first(i - 1)
} else {
return 0
}
}
func first(n int) int {
if n <= 1 {
return n
} else {
return second(n - 3)
}
}
func callmed(i int) int {
return i * i * i
}
func callmee(i int) int {
return i + 20
}
func callme2(i int) int {
d := callmee(i) + 40
return d + callmed(i)
}
func callme(i int) int {
return 10 + callme2(i)
}
func F0() {
defer func() {
recover()
}()
F1()
}
func F1() {
F2()
}
func F2() {
F3()
}
func F3() {
F4()
}
func F4() {
panic("blah")
}
var intc, intd int
func swap() {
defer func() {
intc += 100
}()
temp := intc
intc = intd
intd = temp
}
func unnamedDefer() {
intc = -100
intd = 100
swap()
fmt.Println(intc, intd)
}
func formula(op string) func(int, int) int {
var calc func(int, int) int
if op == "add" {
calc = func(m int, n int) int {
res := m + n
return res
}
} else if op == "mul" {
calc = func(m int, n int) int {
res := m * n
return res
}
}
return calc
}
func op() int {
calc := formula("add")
res := calc(10, 20)
return res
}
func assign(bar func()) {
bar()
}
func testfunc() {
intc = 10
intd = 20
}
func dyn() {
intc = 0
intd = 0
assign(testfunc)
}
func outer() {
intc = 40
defer swap()
}
func nestDefer() {
defer outer()
}
func namedDeferLoop(n int) {
for i := 0; i < n; i++ {
defer testfunc()
}
temp := intc
intc = intd
intd = temp
}
func main() {
j := 0
j += A(2)
j += first(6)
j += callme(2)
fmt.Println(j)
unnamedDefer()
nestDefer()
namedDeferLoop(2)
F0()
ans := op()
fmt.Println(ans)
dyn()
}
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