• 启动MongoDB后出现“sync_file_range Function not implemented”错误（mongodb failed to start）
• An operation is not implemented: not implemented
• angularjs ng-include 页面引入 controller 提示 “XXXController not a function , get undefined”
• AngularJS--[ng:areq] Argument 'xxCtrl' is not a function, got undefined！错误
• behavior planning——13. implement a cost function in C++

启动MongoDB后出现“sync_file_range Function not implemented”错误（mongodb failed to start）

在启动MongoDB之后，发生以下错误：

2016-05-20T03:31:42.434+0000 E STORAGE [thread1] WiredTiger (38) [1463715102:434079][82234:0x7ffff7a00700],file:index-1-1139538570121965129.wt,WT_SESSION.checkpoint: index-1-1139538570121965129.wt: handle-sync: sync_file_range: Function not implemented 2016-05-20T03:31:42.434+0000 E STORAGE [thread1] WiredTiger (38) [1463715102:434315][82234:0x7ffff7a00700],checkpoint-server: checkpoint server error: Function not implemented 2016-05-20T03:31:42.434+0000 E STORAGE [thread1] WiredTiger (-31804) [1463715102:434396][82234:0x7ffff7a00700],checkpoint-server: the process must exit and restart: WT_PANIC: WiredTiger library panic

我的环境是：

# lsb_release -a distributor ID: Ubuntu Description: Ubuntu 14.04.3 LTS Release: 14.04 Codename: trusty # uname -a Linux 531e9a66-bf7d-41db-921e-75c2fe6447c7 3.13.0 BrandZ virtual linux x86_64 x86_64 x86_64 GNU/Linux

帮帮我！ 非常感谢！

sql Server Compact Edition数据库部署策略

导入MysqL数据库的shell脚本 – 错误2002（HY000）：无法通过套接字“/var/run/MysqLd/MysqLd.sock”连接到本地MysqL服务器（2）

DB连接简单的文件，不能记住扩展名

实现高性能的分布式文件系统/数据库

使用命令行linux安装android sdk

C中的问题 – 如何擦除数据库结构中的数组

MysqL注入损害？

oracle 11g odbc驱动程序安装在Windows 7上与同名的odbc驱动程序已经存在

如果数据库最终依赖于操作系统，数据库如何保证持久性？

从远程数据库获取数据的Android应用程序

An operation is not implemented: not implemented

最近刚好有点时间，研究了下炒得火热的kotlin

在之前项目中新建了一个module专门用kotlin编程！

项目中数据层和基础库在common module中，都是java，继承了baseActivity和接口IBaseView后，习惯用AS的快捷键自动生成代码。

然后设置下标题栏

强迫症的我这是什么鬼，看了下解释，

父类明明调用了，这里居然无效，不管先运行看看。奈何直接奔掉了。

然后各种搜kotlin继承java抽象类种种，也没啥解决办法，坑啊，还是去看官方文档吧

kotlin TODO 官网描述地址:https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-t-o-d-o.html

Kotlin NotImplementedError 官网描述:https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-not-implemented-error/

然后只想说。CNM。

记得java里面是不用管直接写的，kotlin要删掉该行代码

OK，跑起来了！

解决办法：删除

TODO("not implemented") //To change body of created functions use File | Settings | File Templates.

angularjs ng-include 页面引入 controller 提示 “XXXController not a function , get undefined”

angualrjs 中 a.html 中利用 ng-include 指令引入 页面 b.html，b.html 页面引入 controller 时提示 “XXXController not a function, get undefined”, 该 XXXController 我在其他 html 文件中引用过，没有问题，但是在 b.html 中引用时提示上述错误。angular 版本是 1.5.6 ，XXXController 由 angular.module ("app").controller (''XXXController'')，并无全局作用域的问题。请问如何解决？

AngularJS--[ng:areq] Argument 'xxCtrl' is not a function, got undefined！错误

[ng:areq] Argument ''DemoCtrl'' is not a function,got undefined！

function setupModuleLoader(window) {
            ...
            function ensure(obj,name,factory) {
                return obj[name] || (obj[name] = factory());
            }
            var angular = ensure(window,''angular'',Object);
            return ensure(angular,''module'',function() {
                var modules = {};
                return function module(name,requires,configFn) {
                    var assertNotHasOwnProperty = function(name,context) {
                        if (name === ''hasOwnProperty'') {
                            throw ngminerr(''badname'',''hasOwnProperty is not a valid {0} name'',context);
                        }
                    };

                    assertNotHasOwnProperty(name,''module'');
                    if (requires && modules.hasOwnProperty(name)) {
                        modules[name] = null;
                    }
                    return ensure(modules,function() {
                        if (!requires) {
                            throw $injectorminerr(''nomod'',"Module ''{0}'' is not available! You either misspelled " +
                                "the module name or forgot to load it. If registering a module ensure that you " +
                                "specify the dependencies as the second argument.",name);
                        }
                        var invokeQueue = [];
                        var runBlocks = [];
                        var config = invokelater(''$injector'',''invoke'');
                        var moduleInstance = {
                            _invokeQueue: invokeQueue,_runBlocks: runBlocks,requires: requires,name: name,provider: invokelater(''$provide'',''provider''),factory: invokelater(''$provide'',''factory''),service: invokelater(''$provide'',''service''),value: invokelater(''$provide'',''value''),constant: invokelater(''$provide'',''constant'',''unshift''),animation: invokelater(''$animateProvider'',''register''),filter: invokelater(''$filterProvider'',controller: invokelater(''$controllerProvider'',directive: invokelater(''$compileProvider'',''directive''),config: config,run: function(block) {
                                runBlocks.push(block);
                                return this;
                            }
                        };
                        if (configFn) {
                            config(configFn);
                        }
                        return moduleInstance;

                        function invokelater(provider,method,insertMethod) {
                            return function() {
                                invokeQueue[insertMethod || ''push'']([provider,arguments]);
                                return moduleInstance;
                            };
                        }
                    });
                };
            });
        }

behavior planning——13. implement a cost function in C++

In the previous quizzes, you designed a cost function to choose a lane when trying to reach a goal in highway driving:

Here, Δ was the lateral distance between the goal lane and the final chosen lane, and Δ was the longitudinal distance from the vehicle to the goal.

In this quiz, we''d like you to implement the cost function in C++, but with one important change. The finite state machine we use for vehicle behavior also includes states for planning a lane change right or left (PLCR or PLCL), and the cost function should incorporate this information. We will provide the following four inputs to the function:

• Intended lane: the intended lane for the given behavior. For PLCR, PLCL, LCR, and LCL, this would be the one lane over from the current lane.
• Final lane: the immediate resulting lane of the given behavior. For LCR and LCL, this would be one lane over.
• The Δs distance to the goal.
• The goal lane.

Your task in the implementation will be to modify Δd in the equation above so that it satisifes:

• Δd is smaller as both intended lane and final lane are closer to the goal lane.
• The cost function provides different costs for each possible behavior: KL, PLCR/PLCL, LCR/LCL.
• The values produced by the cost function are in the range 0 to 1.

You can implement your solution in cost.cpp below.

 cost.cpp

float goal_distance_cost(int goal_lane, int intended_lane, int final_lane, float distance_to_goal) {
    /*
    The cost increases with both the distance of intended lane from the goal
    and the distance of the final lane from the goal. The cost of being out of the 
    goal lane also becomes larger as vehicle approaches the goal.
    */
    int delta_d = 2.0*goal_lane - intended_lane - final_lane;
    float cost = 1 - exp(-(abs(delta_d) / distance_to_goal));
    return cost;
}

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