字节编程题：实现一个add方法 #103

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1. sisterAn

   added

   字节

   on Sep 4, 2020
2. kexiaofu commented on Sep 4, 2020

   

   kexiaofu

   on Sep 4, 2020

   More actions

   先来抛砖，希望可以引玉

   function add() {
     const args = Array.prototype.slice.apply(arguments);
     const self = this;
     this.nums = [...args];
     function _add() {
       const _args = Array.prototype.slice.apply(arguments);
       this.nums.push(..._args);
       return _add; 
     }
     _add.value = function() {
       return self.nums.reduce((acc, cur) => acc += cur, 0);
     }
     return _add;
   }

   考验的是闭包和this
3. oxyzhg commented on Sep 4, 2020

   

   oxyzhg

   on Sep 4, 2020

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   function add(...args) {
     const nums = [...args];
   
     function addFn(...args1) {
       nums.push(...args1);
       return addFn;
     }
   
     addFn.value = () => {
       const sum = nums.reduce((s, n) => s + n, 0);
       console.log(sum);
       return sum;
     };
   
     return addFn;
   }
4. m7yue commented on Sep 4, 2020

   

   m7yue

   on Sep 4, 2020

   More actions

   思路都差不多

   const add = (...args) => {
       const _add = (...args1) => {
           return add(...args, ...args1)
       }
       _add.value = () => args.reduce((t, e) => t+e)
   
       return _add
   }
   add(1)(2,3)(4).value()

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5. feng9017 commented on Jan 4, 2021

   

   feng9017

   on Jan 4, 2021

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   function add(...params) {
       const result = add.bind(null, ...params);
       result.value = () => params.reduce((accumulator, cur) => accumulator + cur);
   
       return result;
   }
   
6. z253573760 commented on Feb 2, 2021

   

   z253573760

   on Feb 2, 2021

   More actions

   function add(...args) {
     const _add = (..._args) => {
       args.push(..._args);
       return _add;
     };
     _add.value = () => args.reduce((a, b) => a + b, 0);
     return _add;
   }
   
   const res = add(1)(2, 3)(4).value(); //10
   console.log(res);
   
7. dlrandy commented on Jun 8, 2021

   

   dlrandy

   on Jun 8, 2021

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   function add(...params) {
   let args = [...params];
   function innerAdd(...p) {
   args = args.concat(p);
   return innerAdd;
   }
   function value() {
   return args.reduce((s, n) => s + n , 0)
   }
   innerAdd.value = value;

   return innerAdd;
   }
8. xllpiupiu commented on Oct 1, 2021

   

   xllpiupiu

   on Oct 1, 2021

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   /**
    * 函数柯里化实现add(1)(1,2)(3)等
    * https://blog.csdn.net/weixin_30498807/article/details/102319249
    */
   // let obj = {
   //     name:'hell',
   //     toString:function() {
   //         console.log('调用了toString')
   //         return '22'
   //     },
   //     valueOf:function() {
   //         console.log('调用了obj.valueOf');
   //         return '00'
   //     }
   // }
   // console.log(obj+"3")
   function test() {
       console.log(1);
   }
   test.toString = function () {
       console.log('调用了valueOf方法');
       return 2;
   }
   function add() {
       var arr = Array.prototype.slice.call(arguments)
       const _adder = function () {
           arr.push(...arguments)
           return _adder;
       }
       _adder.valueOf = function () {
           return arr.reduce((a, b) => a + b);
       }
       return _adder;
   }
   let res = add(1)(2)(3, 4);
   console.log(add(1)(2, 3).valueOf())
   console.log(res+0)
9. liu-mengwei commented on Dec 6, 2022

   

   liu-mengwei

   on Dec 6, 2022

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   function add(...args1) {
   let _add = function (...args2) {
   return add(...args1, ...args2);
   };

   _add.value = function () {
   let sum = 0;
   for (let num of args1) {
   sum += num;
   }
   return sum;
   };

   return _add;
   }