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edit function/tail call

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Ruan Yifeng 2015-04-10 11:55:54 +08:00
parent aba2df6647
commit afb572c243
1 changed files with 8 additions and 8 deletions
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16
docs/function.md
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@ -680,7 +680,7 @@ function f(x){
// 情况二
function f(x){
return g(x)+1;
return g(x) + 1;
}
```
@ -690,7 +690,7 @@ function f(x){
```javascript
function f(x) {
if (x>0) {
if (x > 0) {
return m(x)
}
return n(x);
@ -711,7 +711,7 @@ function f(x) {
function f(x) {
let m = 1;
let n = 2;
return g(m+n);
return g(m + n);
}
// 等同于
@ -736,7 +736,7 @@ g(3);
```javascript
function factorial(n) {
if (n === 1) return 1;
return n * factorial(n-1);
return n * factorial(n - 1);
}
factorial(5) // 120
@ -749,7 +749,7 @@ factorial(5) // 120
```javascript
function factorial(n, total) {
if (n === 1) return total;
return factorial(n-1, n * total);
return factorial(n - 1, n * total);
}
factorial(5, 1) // 120
@ -766,7 +766,7 @@ factorial(5, 1) // 120
```javascript
function tailFactorial(n, total) {
if (n === 1) return total;
return tailFactorial(n-1, n * total);
return tailFactorial(n - 1, n * total);
}
function factorial(n) {
@ -790,7 +790,7 @@ function currying(fn, n) {
function tailFactorial(n, total) {
if (n === 1) return total;
return tailFactorial(n-1, n * total);
return tailFactorial(n - 1, n * total);
}
const factorial = currying(tailFactorial, 1);
@ -805,7 +805,7 @@ factorial(5) // 120
```javascript
function factorial(n, total = 1) {
if (n === 1) return total;
return factorial(n-1, n * total);
return factorial(n - 1, n * total);
}
factorial(5) // 120