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Window vs Page vs UserControl for WPF navigation?

...a page inside your Window. It is mostly used for web-based systems like an XBAP, where you have a single browser window and different pages can be hosted in that window. It can also be used in Navigation Applications like sellmeadog said. A UserControl is a reusable user-created control that you ca...
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Checking for NULL pointer in C/C++ [closed]

... In my experience, tests of the form if (ptr) or if (!ptr) are preferred. They do not depend on the definition of the symbol NULL. They do not expose the opportunity for the accidental assignment. And they are clear and succinct. E...
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AngularJS performs an OPTIONS HTTP request for a cross-origin resource

...hich delivers my template files is on a different domain and therefore the XHR request that angular performs must be cross-domain. I've added the appropriate CORS header to my server for the HTTP request to make this work, but it doesn't seem to work. The problem is that when I inspect the HTTP requ...
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Error installing mysql2: Failed to build gem native extension

...d other distributions using yum: sudo yum install mysql-devel On Mac OS X with Homebrew: brew install mysql share | improve this answer | follow | ...
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Meaning of 'const' last in a function declaration of a class?

...o in the const version. If you change the method declaration in the above example to the code below you will get some errors. void Foo() { counter++; //this works std::cout << "Foo" << std::endl; } void Foo() const { counter++; //this wil...
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ASP.NET MVC 5 - Identity. How to get current ApplicationUser

...e current ApplicationUser. That introduces a new dependency of having an extra context for starters, but going forward the user database tables change (3 times in the past 2 years) but the API is consistent. For example the users table is now called AspNetUsers in Identity Framework, and the names ...
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How do I remove files saying “old mode 100755 new mode 100644” from unstaged changes in Git?

... That looks like unix file permissions modes to me (755=rwxr-xr-x, 644=rw-r--r--) - the old mode included the +x (executable) flag, the new mode doesn't. This msysgit issue's replies suggests setting core.filemode to false in order to get rid o...
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Coroutine vs Continuation vs Generator

...rning, but when called will return (yield) a value and then suspend their execution. When they're called again, they will start up from where they last suspended execution and do their thing again. A generator is essentially a cut down (asymmetric) coroutine. The difference between a coroutine and ...
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How can I check if character in a string is a letter? (Python)

...supper , but can you check whether or not that character is a letter? For Example: 6 Answers ...
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How to change facet labels?

... related... if you want the panel label to be a bquote() expression (e.g., levels(x$measurements) <- c(bquote(Area ~~ (cm^2)), bquote(Length ~~ (cm)))) it will not appear in mathematical expression. How would one show expressions as facet labels? – Brian D ...