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Abstract class in Java

...class must implement. Provide a common interface which allows the subclass to be interchanged with all other subclasses. Here's an example: abstract public class AbstractClass { abstract public void abstractMethod(); public void implementedMethod() { System.out.print("implementedMethod()"...
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SSL certificate rejected trying to access GitHub over HTTPS behind firewall

I'm stuck behind a firewall so have to use HTTPS to access my GitHub repository. I'm using cygwin 1.7.7 on Windows XP. 30 A...
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What is the command to truncate a SQL Server log file?

I need to empty an LDF file before sending to a colleague. How do I force SQL Server to truncate the log? 7 Answers ...
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How to “pretty” format JSON output in Ruby on Rails

I would like my JSON output in Ruby on Rails to be "pretty" or nicely formatted. 18 Answers ...
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How to initialize a List to a given size (as opposed to capacity)?

... I can't say I need this very often - could you give more details as to why you want this? I'd probably put it as a static method in a helper class: public static class Lists { public static List<T> RepeatedDefault<T>(int count) { return Repeated(default(T), count)...
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How to test Spring Data repositories?

I want a repository (say, UserRepository ) created with the help of Spring Data. I am new to spring-data (but not to spring) and I use this tutorial . My choice of technologies for dealing with the database is JPA 2.1 and Hibernate. The problem is that I am clueless as to how to write unit tests f...
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I just discovered why all ASP.Net websites are slow, and I am trying to work out what to do about it

... /> I'm curious, what do you think "a ThreadSafe collection" would do to become thread-safe, if it doesn't use locks? Edit: I should probably explain by what I mean by "opt out of most of this lock". Any number of read-only-session or no-session pages can be processed for a given session at th...
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Traits vs. interfaces

I've been trying to study up on PHP lately, and I find myself getting hung up on traits. I understand the concept of horizontal code reuse and not wanting to necessarily inherit from an abstract class. What I don't understand is: What is the crucial difference between using traits versus interfaces?...
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How is AngularJS different from jQuery

... While Angular 1 was a framework, Angular 2 is a platform. (ref) To developers, Angular2 provides some features beyond showing data on screen. For example, using angular2 cli tool can help you "pre-compile" your code and generate necessary javascript code (tree-shaking) to shrink the downl...
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How can I auto-elevate my batch file, so that it requests from UAC administrator rights if required?

I want my batch file to only run elevated. If not elevated, provide an option for the user to relaunch batch as elevated. 1...