添加一个不够稳健但是很特色的函数

js/高阶函数 curry.js

@@ -5,6 +5,9 @@
 // fn(5)
 // fn()
 // console.log(1,2,3,4,5)
+function isFunction(fn) {
+    return Object.prototype.toString.call(fn)=== '[object Function]';
+}
 
 
 let fn = _curry(console.log,'test');
@@ -26,4 +29,99 @@ function _curry(fn){
             return fn(...params,...arguments);
         }
     }
-}
+}
+console.log('\n--------------------------------\n');
+/**
+ * @returns {(function(): (*))|*}
+ */
+ function curry(){
+    let _arguments = Array.from(arguments);
+    let runLength = null;
+    let fn = null;
+    let params = [..._arguments];
+    let cb =  function (){
+        let __arguments = Array.from(arguments);
+        params.push(...__arguments);
+        // 本次函数的参数
+        // 历史函数的参数
+        // 参数数量是否至少两个. 一般需要三个
+        if(fn){
+            // 空值执行
+            if(__arguments.length<1 || (runLength && runLength <= params.length)){
+                return fn(...params);
+            }
+            return cb;
+        }
+        // console.log(params);
+        // 从输入中提取要执行的函数
+        if(typeof params[0] === 'number' && isFunction(params[1])){
+            runLength = params[0];
+            fn = params[1];
+            params = params.splice(2);
+        }else if(isFunction(params[0])){
+            runLength = null;
+            fn = params[0];
+            params = params.splice(1);
+            if(fn.length){
+                console.log(fn.length);
+                runLength = fn.length;
+            }
+        }else if(typeof params[0] === 'number'){
+            runLength = params[0];
+            params = params.splice(1);
+        }else{
+            throw {message:'first param must function or number'}
+        }
+        // console.log(params);
+        if(fn){
+            if( runLength && runLength <= params.length){
+                console.log('?');
+                
+                return fn(...params);
+            }
+        }
+        return cb;
+    }
+    return cb;
+}
+
+
+function curry2(func) {
+    return function curried(...args) {
+      if (args.length >= func.length) {
+        return func.apply(this, args);
+      } else {
+        return function(...args2) {
+          return curried.apply(this, args.concat(args2));
+        }
+      }
+    };
+}
+
+let c1 = function (event,msg){
+    console.log(`event:${event} say ${msg}`)
+}
+let c2 = function (f1,f2,f3,f4){
+    console.log(`1: ${f1}\n2: ${f2}\n3: ${f3}\n4: ${f4}`)
+}
+let c5 =function(){
+    console.log(...arguments);
+}
+
+let fn1 = curry(c1);
+let r1 = fn1('text')('你好');
+console.log('--------');
+let fn2 = curry(4);
+let r2 = fn2(c2)('a','b')('c','d');
+console.log('--------');
+let fn3 = curry(4,c2,'fn3 1','fn3 2');
+let r3 = fn3('tes')('你好','9999999');
+console.log('--------');
+let fn4 = curry(2,console.log);
+let r4 = fn4('fn4');
+console.log('--------');
+let fn5 = curry(c5);
+let r5 = fn5('text555')('你好---')();
+console.log('--------');
+
+