var currying = function(fn) {
    // fn 指官员消化老婆的手段
    var args = [].slice.call(arguments, 1);
    // args 指的是那个合法老婆
    return function() {
        // 已经有的老婆和新搞定的老婆们合成一体，方便控制
        var newArgs = args.concat([].slice.call(arguments));
        // 这些老婆们用 fn 这个手段消化利用，完成韦小宝前辈的壮举并返回
        return fn.apply(null, newArgs);
    };
};

// 下为官员如何搞定7个老婆的测试
// 获得合法老婆
var getWife = currying(function() {
    var allWife = [].slice.call(arguments);
    // allwife 就是所有的老婆的，包括暗渡陈仓进来的老婆
    console.log(allWife.join(";"));
}, "合法老婆");

// 获得其他6个老婆
getWife("大老婆","小老婆","俏老婆","刁蛮老婆","乖老婆","送上门老婆");

// 换一批老婆
getWife("超越韦小宝的老婆");

var smallKenan = function(action) {
    var bigKenan = function(doing) {
        var result = "";
        if (action === "take drugs") {
            if (doing === "bathWithGirlFriend") {
                result = "尖叫，新一，你这个色狼，然后一巴掌，脸煮熟了~";
            } else if (doing === "pointOutKiller") {
                result = "新一，这个案子就交给你的，快点找出谁是凶手吧~";
            }
        } else {
            if (doing === "bathWithGirlFriend") {
                result = "来吧，柯南，一起洗澡吧~";
            } else if (doing === "pointOutKiller") {
                result = "小孩子家，滚一边去！";
            }
        }
        console.log(result);
        return arguments.callee; // 等同于return bigKenan
    };
    return bigKenan;
};

// 小柯南吃药了，然后和毛利兰洗澡，凶案现场指证犯人；结果是……
smallKenan("take drugs")("bathWithGirlFriend")("pointOutKiller");

var addEvent = function(el, type, fn, capture) {
    if (window.addEventListener) {
        el.addEventListener(type, function(e) {
            fn.call(el, e);
        }, capture);
    } else if (window.attachEvent) {
        el.attachEvent("on" + type, function(e) {
            fn.call(el, e);
        });
    } 
};

var addEvent = (function(){
    if (window.addEventListener) {
        return function(el, sType, fn, capture) {
            el.addEventListener(sType, function(e) {
                fn.call(el, e);
            }, (capture));
        };
    } else if (window.attachEvent) {
        return function(el, sType, fn, capture) {
            el.attachEvent("on" + sType, function(e) {
                fn.call(el, e);
            });
        };
    }
})();

var fishWeight = 0;
var addWeight = function(weight) {
    fishWeight += weight;
};

addWeight(2.3);
addWeight(6.5);
addWeight(1.2);
addWeight(2.5);

console.log(fishWeight);   // 12.5

var curryWeight = function(fn) {
    var _fishWeight = [];
    return function() {
        if (arguments.length === 0) {
            return fn.apply(null, _fishWeight);
        } else {
            _fishWeight = _fishWeight.concat([].slice.call(arguments));
        }
    }
};
var fishWeight = 0;
var addWeight = curryWeight(function() {
    var i=0; len = arguments.length;
    for (i; i<len; i+=1) {
        fishWeight += arguments[i];
    }
});

addWeight(2.3);
addWeight(6.5);
addWeight(1.2);
addWeight(2.5);
addWeight();    //  这里才计算

console.log(fishWeight);    // 12.5

var averageWeight = 0;
var addWeight = curryWeight(function() {
    var i=0; len = arguments.length;
    for (i; i<len; i+=1) {
        averageWeight += arguments[i]/len;
    }
});

addWeight(2.3);
addWeight(6.5);
addWeight(1.2);
addWeight(2.5);
addWeight();    //  这里才计算

console.log(averageWeight);    // 3.125

addWeight(2.3, 6.5);
addWeight(1.2, 2.5);

var obj = {
    "name": "currying" 
},
fun = function() {
    console.log(this.name);
}.bind(obj);

fun(); // currying

if (!function() {}.bind) {
    Function.prototype.bind = function(context) {
        var self = this
            , args = Array.prototype.slice.call(arguments);
            
        return function() {
            return self.apply(context, args.slice(1));    
        }
    };
}