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How to implement a rule engine?
...t generating code on the fly was possible even before the Expression trees API was introduced, using Reflection.Emit. The method LambdaExpression.Compile() uses Reflection.Emit under the covers (you can see this using ILSpy).
...
IllegalStateException: Can not perform this action after onSaveInstanceState with ViewPager
...d onSaveInstanceState(Bundle outState) {
//No call for super(). Bug on API Level > 11.
}
Don't make the call to super() on the saveInstanceState method. This was messing things up...
This is a known bug in the support package.
If you need to save the instance and add something to your ou...
What is managed or unmanaged code in programming?
...e library code needs to call into unmanaged code (for example, native code APIs, such as Win32). Because this means going outside the security perimeter for managed code, due caution is required.
Here is some other complimentary explication about Managed code:
Code that is executed by the CLR.
C...
Glorified classes in the Java language
Some classes in the standard Java API are treated slightly different from other classes. I'm talking about those classes that couldn't be implemented without special support from the compiler and/or JVM.
...
CListCtrl 扩展风格设置方法：SetExtendedStyle和ModifyStyleEx 区别 - C++...
...因此它就不能通过ModifyStyleEx做设定。比较起ModifyStyle，该API即可设定普通窗口的风格，比如WS_CHILD,WS_VISIBLE。也可.设定控件的普通风格，对listctrl，就有LVS_REPORT,LVS_OWNERDRAWFIXED等等，这就是为什么在创建子控件时我们可以把WS_CHILD,...
Integrated Markdown WYSIWYG text editor
... to do is implement this interface http://nightly-v4.ckeditor.com/ckeditor_api/#!/api/CKEDITOR.dataProcessor. If you check BBCode plugin's code you'll see some hacks and tricks, because unfortunately current CKEditor's architecture isn't ready (yet) to create such a data processor. However, I believ...
Difference between the 'controller', 'link' and 'compile' functions when defining a directive
...ctive, hence the tabs directive needs to define a controller method (think API) that the pane directive can access/call. For a more in-depth explanation of the tabs and pane directives, and why the tabs directive creates a function on its controller using this (rather than on $scope), please see 't...
OAuth 2.0: Benefits and use cases — why?
...n that will expire. Google is using a 5 minute expiration on their OAuth 2 APIs.
So aside from the refresh tokens, OAuth 2 simplifies all the communications between the client, server, and content provider. And the refresh tokens only exist to provide security when content is being accessed unencry...
Sending emails in Node.js? [closed]
...var emailService = new alphamail.EmailService()
.setServiceUrl('http://api.amail.io/v1/')
.setApiToken('YOUR-ACCOUNT-API-TOKEN-HERE');
var person = {
id: 1234,
userName: "jdoe75",
name: {
first: "John",
last: "Doe"
},
dateOfBirth: 1975
};
emailService.qu...
What’s the difference between ScalaTest and Scala Specs unit test frameworks?
...). So basically in ScalaTest I try to provide more functionality with less API.
Another general design attitude difference between specs and ScalaTest
involves implicit conversions. By default you get only one implicit conversion when you use ScalaTest, which is the one that puts the === operator o...