英文:
How do I make this Fibonacci sequence generator more elegant?
问题
以下是你提供的代码的中文翻译：
package main
import "fmt"
func fib_seq() func() int {
n0, n1 := 0, 1
return func() int {
result := n0
n0, n1 = n1, n0 + n1
return result
}
}
func main() {
f := fib_seq()
for i := 0; i < 10; i++ {
fmt.Println(f())
}
}
这是一个生成斐波那契数列的程序。result 的定义是不需要的（但是必要的）。
我想知道在 return 之后是否有一种方法可以执行 x, y = y, x + y？
英文:
package main
import "fmt"
func fib_seq() func() int {
n0, n1 := 0, 1
return func() int {
result := n0
n0, n1 = n1, n0 + n1
return result
}
}
func main() {
f := fib_seq()
for i := 0; i < 10; i++ {
fmt.Println(f())
}
}
This is my Fibonacci sequence generator. The definition of result is unwanted (but necessary).
I wonder is there a way to execute x, y = y, x + y after return?
答案1
得分: 3
你可能想要看一下defer：
func fib_seq() func() int {
n0, n1 := 0, 1
return func() int {
defer func() {
n0, n1 = n1, n0 + n1
}()
return n0
}
}
英文:
You may want to take a look at defer:
func fib_seq() func() int {
n0, n1 := 0, 1
return func() int {
defer func() {
n0, n1 = n1, n0 + n1
}()
return n0
}
}
答案2
得分: 2
命名返回。但是你已经有了足够可读的内容。
func fib_seq() func() int {
n0, n1 := 0, 1
return func() (r int) {
r, n0, n1 = n0, n1, n0 + n1
return
}
}
英文:
Named return. But what you have is already readable enough.
func fib_seq() func() int {
n0, n1 := 0, 1
return func() (r int) {
r, n0, n1 = n0, n1, n0 + n1
return
}
}
答案3
得分: 0
个人而言，我更喜欢以下的代码（为了可读性）：
type fib struct{ n0, n1 int }
func (f *fib) next() int {
defer func() {
f.n0, f.n1 = f.n1, f.n0+f.n1
}()
return f.n0
}
func main() {
fib := &fib{0, 1}
for i := 0; i < 10; i++ {
fmt.Println(fib.next())
}
}
请注意，我只提供了代码的翻译部分，不包括其他内容。
英文:
Personally, I'd prefer the following (for readability):
type fib struct{ n0, n1 int }
func (f *fib) next() int {
defer func() {
f.n0, f.n1 = f.n1, f.n0+f.n1
}()
return f.n0
}
func main() {
fib := &fib{0, 1}
for i := 0; i < 10; i++ {
fmt.Println(fib.next())
}
}
答案4
得分: 0
“优雅”对不同的人来说有不同的含义。对一些人来说，它可能意味着“简洁”，对其他人来说可能意味着“简单”或“易读”。
这是我的理解：
public class Fibonacci {
private static int x;
private static int y;
private static int z;
public static void main(String[] args) {
x = 0;
y = 1;
z = 0;
System.out.println(x);
System.out.println(y);
while (z < 100) {
z = x + y;
System.out.println(z);
x = y;
y = z;
}
}
}
如你所见，我更注重代码的可读性而非复杂性 
英文:
"Elegant" means different things to different people. To some it may mean "conciseness," and to others it may mean "simplicity," or "readability."
Here is my take on it:
public class Fibonacci {
private static int x;
private static int y;
private static int z;
public static void main(String[] args) {
x = 0;
y = 1;
z = 0;
System.out.println(x);
System.out.println(y);
while (z < 100) {
z = x + y;
System.out.println(z);
x = y;
y = z;
}
}
}
As you can see, I favor readability over sophistication
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