runtime

Can I count on this ASP.NET event log source always being registered?

江枫思渺然 提交于 2019-12-06 13:30:22
Unhandled exceptions cause ASP.NET-based applications to unexpectedly quit in the .NET Framework 2.0 makes me think that an event log source named with the following convention will always be registered on any box where the .NET Framework has been installed: "ASP.NET X.Y.Z.0" Where X, Y, and Z are the major, minor, and build numbers from the .NET runtime. Is it safe to assume that the installation of the .NET Framework will always create this event log source? This event log source is installed by ASP.NET as part of ASP.NET Health Monitoring . In particular, it is written to by the

Runtime SQL Query Builder

浪子不回头ぞ 提交于 2019-12-06 13:16:28
My question is similar to Is there any good dynamic SQL builder library in Java? However one important point taken from above thread: Querydsl and jOOQ seem to be the most popular and mature choices however there's one thing to be aware of: Both rely on the concept of code generation , where meta classes are generated for database tables and fields. This facilitates a nice, clean DSL but it faces a problem when trying to create queries for databases that are only known at runtime . Is there any way to create the queries at runtime besides just using plain JDBC + String concatenation? What I'm

ArcGIS Runtime SDK for WPF学习笔记(一)

混江龙づ霸主 提交于 2019-12-06 12:28:30
  本节主要讲解如何安装ArcGIS Runtime SDK,以及移除注释与水印。   附上 ArcGIS Runtime SDK for .NET 的官方操作手册网址: https://developers.arcgis.com/net/latest/wpf/guide/install-the-sdk.htm 一、项目添加 ArcGIS Runtime SDK 引用 。    鼠标右键点击项目,选择“管理NuGet程序包”。   在“浏览”中输入“Esri”,在列表中选中“Esri.ArcGISRuntime.WPF”进行安装。 二、在View中使用地图。   在界面中添加引用 xmlns:esri="http://schemas.esri.com/arcgis/runtime/2013" 后,就可以直接使用地图控件了。 1 <esri:MapView> 2 <esri:Map> 3 <!-- 用法一 --> 4 <!--<esri:ArcGISTiledLayer Source="http://services.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer" />--> 5 6 <!-- 用法二 --> 7 <esri:Map.Basemap> 8 <esri:Basemap> 9 <esri

Xcode 运行objc_msgSend 提示objc_msgsend()Too many arguments to function call, expected 0

瘦欲@ 提交于 2019-12-06 12:15:29
今天在研究runtime相关的东西,关于消息的部分. 消息是通过objc_msgSend()这个runtime方法来实现的。这个方法需要一个target,selector,还有一些参数。理论上来说,编译器只是把消息分发变成objc_msgSend来执行。比如下面这两行代码是等价的。 [array insertObject:foo atIndex:5]; objc_msgSend(array, @selector(insertObject:atIndex:), foo, 5); 但是自己尝试写了一下demo 运行的时候发现,提示 百思不得其解,因为源码里面查询,是看得到相关参数设定的 最后查找了一些资料,发现是此功能被disable 掉了,这里有两种方法可以恢复。 第一种 更改Xcode build setting 第二种 通过参数传递直接强转msgsend 这里通过(void *)送入三个参数,你可以根据自己参数类型强转原本是void()的函数方法 来源: https://www.cnblogs.com/xiaoqiangink/p/11982594.html

How functions are resolved by compiler?

此生再无相见时 提交于 2019-12-06 11:56:27
问题 How it is determined whether the below call is bound at compile time or at runtime? object.member_fn;//object is either base class or derived class object p->member_fn;//p is either base class or derived class pointer EDITED: #include <iostream> using namespace std; class Base { public: Base(){ cout<<"Constructor: Base"<<endl;} ~Base(){ cout<<"Destructor : Base"<<endl;} }; class Derived: public Base { //Doing a lot of jobs by extending the functionality public: Derived(){ cout<<"Constructor:

Java Process cannot get the InputStream through Runtime.getRunTime().exec()

守給你的承諾、 提交于 2019-12-06 11:44:42
问题 try { String str; Process process = Runtime.getRuntime().exec("bash /home/abhishek/workspace/Pro/run"); InputStream isout = process.getInputStream(); InputStreamReader isoutr = new InputStreamReader(isout); BufferedReader brout = new BufferedReader(isoutr); while ((str = brout.readLine()) != null) { System.out.println(str); } } catch (IOException e) { e.printStackTrace(); } The Code has issues with getting the InputStream from the Process, because if I run the Shell script from my Terminal it

Difference between O(m+n) and O(mn)?

霸气de小男生 提交于 2019-12-06 11:19:56
问题 I was trying to find the complexities of an algorithm via different approaches. Mathematically I came across one O(m+n) and another O(mn) approach. However I am unable to grasp or say visualize this. It's not like I look at them and get the "Ahh! That's what's going on" feeling! Can someone explain this using their own examples or any other tool? 回答1: My recommendation for finding intuition is thought experiments as follows: First, realize that m and n are two different measurements of the

@babel/preset-env 与@babel/plugin-transform-runtime 使用及场景区别

北战南征 提交于 2019-12-06 11:09:00
之前在用babel 的时候有个地方一直挺晕的,`@babel/preset-env` 和 `@babel/plugin-transform-runtime`都具有转换语法的能力, 并且都能实现按需 `polyfill` ,但是网上又找不到比较明确的答案, 趁这次尝试 roullp 的时候试了试. 如果我们什么都不做, 没有为babel 编写参数及配置, 那babel 并没有那么大的威力, 它什么都不会做, 正是因为各个预设插件的灵活组合、赋能, 让 babel 充满魅力, 创造奇迹 首先是 @babel/preset-env ## @babel/preset-env 这是一个我们很常用的预设, 几乎所有的教程和框架里都会让你配置它, 它的出现取代了 `preset-es20**` 系列的babel 预设, 你再也不需要繁杂的兼容配置了。 每出一个新提案就加一个? 太蠢了。 有了它, 我们就可以拥有全部, 并且! 它还可以做到按需加载我们需要的 polyfill。 就是这么神奇。 但是吧, 它也不是那么自动化的, 如果你要是不会配置,很有可能就没有用起它的功能 不管怎么养, 首先试一下,眼见为实 首先创建一个 `index.js `,内容如下, 很简单 ```js function test() { new Promise() } test() const arr = [1,2,3

@babel/preset-env 与@babel/plugin-transform-runtime 使用及场景区别

余生长醉 提交于 2019-12-06 11:08:53
之前在用babel 的时候有个地方一直挺晕的, @babel/preset-env 和 @babel/plugin-transform-runtime 都具有转换语法的能力, 并且都能实现按需 polyfill ,但是网上又找不到比较明确的答案, 趁这次尝试 roullp 的时候试了试. 如果我们什么都不做, 没有为babel 编写参数及配置, 那babel 并没有那么大的威力, 它什么都不会做, 正是因为各个预设插件的灵活组合、赋能, 让 babel 充满魅力, 创造奇迹 首先是 @babel/preset-env @babel/preset-env 这是一个我们很常用的预设, 几乎所有的教程和框架里都会让你配置它, 它的出现取代了 preset-es20** 系列的babel 预设, 你再也不需要繁杂的兼容配置了。 每出一个新提案就加一个? 太蠢了。 有了它, 我们就可以拥有全部, 并且! 它还可以做到按需加载我们需要的 polyfill。 就是这么神奇。 但是吧, 它也不是那么自动化的, 如果你要是不会配置,很有可能就没有用起它的功能 不管怎么养, 首先试一下,眼见为实 首先创建一个 index.js ,内容如下, 很简单 function test() { new Promise() } test() const arr = [1,2,3,4].map(item =>