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What are namespaces?

...espacing does for functions and classes what scope does for variables. It allows you to use the same function or class name in different parts of the same program without causing a name collision. In simple terms, think of a namespace as a person's surname. If there are two people named "John" yo...
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Strings as Primary Keys in SQL Database [closed]

... Technically yes, but if a string makes sense to be the primary key then you should probably use it. This all depends on the size of the table you're making it for and the length of the string that is going to be the primary key (lo...
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How to find path of active app.config file?

... Try this AppDomain.CurrentDomain.SetupInformation.ConfigurationFile share | improve this answer | follow ...
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App Inventor 2 如何连接MySQL数据库(阿里云数据库) · App Inventor 2 中文网

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HC-05/BLE 蓝牙通信数据乱码?接收到的中文乱码?乱码的原理及解决思路 · ...

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App Inventor 2 Markdown 自研拓展:Markdown 格式渲染、转换为HTML、生成...

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App Inventor 2 模拟器不能正常朗读文本的解决方法 · App Inventor 2 中文网

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How to add local .jar file dependency to build.gradle file?

... If you really need to take that .jar from a local directory, Add next to your module gradle (Not the app gradle file): repositories { flatDir { dirs 'libs' } } dependencies { implementation name: 'gson-2.2.4' } ...
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What exactly is Heroku?

I just started learning Ruby on rails and I was wondering what Heroku really is? I know that its a cloud that helps us to avoid using servers? When do we actually use it? ...
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How do I set up a simple delegate to communicate between two view controllers?

...he parent view controller's implementation, implement the delegate methods appropriately. RootViewController.m #import "RootViewController.h" @implementation RootViewController - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { ChildViewController *...