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Insert/Update Many to Many Entity Framework . How do I do it?

I'm using EF4 and new to it. I have a many to many in my project and cannot seem to work out how to insert or update. I have build a small project just to see how it should be coded. ...
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Is it safe to delete a NULL pointer?

...elete performs the check anyway, so checking it on your side adds overhead and looks uglier. A very good practice is setting the pointer to NULL after delete (helps avoiding double deletion and other similar memory corruption problems). I'd also love if delete by default was setting the parameter t...
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How do I do a multi-line string in node.js?

... node v4 and current versions of node As of ES6 (and so versions of Node greater than v4), a new "template literal" intrinsic type was added to Javascript (denoted by back-ticks "`") which can also be used to construct multi-line str...
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How do I pass values to the constructor on my wcf service?

... need to implement a combination of custom ServiceHostFactory, ServiceHost and IInstanceProvider. Given a service with this constructor signature: public MyService(IDependency dep) Here's an example that can spin up MyService: public class MyServiceHostFactory : ServiceHostFactory { private...
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How do I check if a list is empty?

... Playing devil's advocate. I don't understand why this idiom is considered pythonic. 'Explicit is better then implicit', correct? This check doesn't seem very explicit about what is is checking. – James McMahon Nov 22 '11 at 6:1...
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How to set a cookie for another domain

Say I have a website called a.com , and when a specific page of this site is loaded, say page link, I like to set a cookie for another site called b.com , then redirect the user to b.com . ...
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How do I add a simple onClick event handler to a canvas element?

... images) that are drawn have no representation besides the pixels they use and their colour. Therefore, to get a click event on a canvas element (shape), you need to capture click events on the canvas HTML element and use some math to determine which element was clicked, provided you are storing th...
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Overloading and overriding

What is the difference between overloading and overriding. 12 Answers 12 ...
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Should I avoid the use of set(Preferred|Maximum|Minimum)Size methods in Java Swing?

...ity between systems with different screen resolution.) Some (incomplete, and unfortunately the links are broken due to migration of SwingLabs to java.net) technical reasons are for instance mentioned in the Rules (hehe) or in the link @bendicott found in his/her comment to my answer. Socially, pos...
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How can I let a table's body scroll but keep its head fixed in place?

...zontal scroll). You'll have two horizontal scrollbars; one for the header and one for the data. – vol7ron Aug 18 '11 at 21:41 4 ...