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Commit bdb4b71

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feat: add js solution to lc problem: No.2666 (doocs#3340)
1 parent 32ac4a4 commit bdb4b71

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4 files changed

+85
-9
lines changed

4 files changed

+85
-9
lines changed

‎solution/2600-2699/2666.Allow One Function Call/README.md‎

Lines changed: 30 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -70,9 +70,10 @@ onceFn(4, 6, 8); // undefined, fn 没有被调用
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#### TypeScript
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```ts
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function once<T extends (...args: any[]) => any>(
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fn: T,
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): (...args: Parameters<T>) => ReturnType<T> | undefined {
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type JSONValue = null | boolean | number | string | JSONValue[] | { [key: string]: JSONValue };
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type OnceFn = (...args: JSONValue[]) => JSONValue | undefined;
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function once(fn: Function): OnceFn {
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let called = false;
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return function (...args) {
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if (!called) {
@@ -91,6 +92,32 @@ function once<T extends (...args: any[]) => any>(
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*/
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```
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#### JavaScript
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```js
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/**
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* @param {Function} fn
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* @return {Function}
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*/
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var once = function (fn) {
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let called = false;
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return function (...args) {
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if (!called) {
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called = true;
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return fn(...args);
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}
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};
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};
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/**
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* let fn = (a,b,c) => (a + b + c)
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* let onceFn = once(fn)
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*
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* onceFn(1,2,3); // 6
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* onceFn(2,3,6); // returns undefined without calling fn
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*/
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```
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<!-- tabs:end -->
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<!-- solution:end -->

‎solution/2600-2699/2666.Allow One Function Call/README_EN.md‎

Lines changed: 30 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -68,9 +68,10 @@ onceFn(4, 6, 8); // undefined, fn was not called
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#### TypeScript
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```ts
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function once<T extends (...args: any[]) => any>(
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fn: T,
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): (...args: Parameters<T>) => ReturnType<T> | undefined {
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type JSONValue = null | boolean | number | string | JSONValue[] | { [key: string]: JSONValue };
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type OnceFn = (...args: JSONValue[]) => JSONValue | undefined;
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function once(fn: Function): OnceFn {
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let called = false;
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return function (...args) {
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if (!called) {
@@ -89,6 +90,32 @@ function once<T extends (...args: any[]) => any>(
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*/
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```
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#### JavaScript
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```js
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/**
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* @param {Function} fn
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* @return {Function}
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*/
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var once = function (fn) {
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let called = false;
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return function (...args) {
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if (!called) {
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called = true;
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return fn(...args);
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}
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};
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};
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/**
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* let fn = (a,b,c) => (a + b + c)
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* let onceFn = once(fn)
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*
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* onceFn(1,2,3); // 6
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* onceFn(2,3,6); // returns undefined without calling fn
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*/
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```
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<!-- tabs:end -->
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<!-- solution:end -->
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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,21 @@
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/**
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* @param {Function} fn
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* @return {Function}
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*/
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var once = function (fn) {
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let called = false;
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return function (...args) {
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if (!called) {
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called = true;
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return fn(...args);
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}
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};
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};
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/**
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* let fn = (a,b,c) => (a + b + c)
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* let onceFn = once(fn)
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*
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* onceFn(1,2,3); // 6
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* onceFn(2,3,6); // returns undefined without calling fn
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*/

‎solution/2600-2699/2666.Allow One Function Call/Solution.ts‎

Lines changed: 4 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,7 @@
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function once<T extends (...args: any[]) => any>(
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fn: T,
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): (...args: Parameters<T>) => ReturnType<T> | undefined {
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type JSONValue = null | boolean | number | string | JSONValue[] | { [key: string]: JSONValue };
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type OnceFn = (...args: JSONValue[]) => JSONValue | undefined;
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function once(fn: Function): OnceFn {
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let called = false;
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return function (...args) {
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if (!called) {

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