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What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?

...ch should help beginners (and intermediate) programmers to recognize and challenge their unwarranted assumptions in C, C++ and their platforms. ...
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Django, creating a custom 500/404 error page

... for some reason request.user appears fine in the 404 template, but not at all in the 500 template (and they are almost identical) -- posted question on this here: stackoverflow.com/questions/26043211/… – Gravity Grave Sep 25 '14 at 16:13 ...
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How to use C++ in Go

In the new Go language, how do I call C++ code? In other words, how can I wrap my C++ classes and use them in Go? 12 Answ...
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Is it expensive to use try-catch blocks even if an exception is never thrown?

... try has almost no expense at all. Instead of doing the work of setting up the try at runtime, the code's metadata is structured at compile time such that when an exception is thrown, it now does a relatively expensive operation of walking up the stack an...
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how to get GET and POST variables with JQuery?

... There's a plugin for jQuery to get GET params called .getUrlParams For POST the only solution is echoing the POST into a javascript variable using PHP, like Moran suggested. share | ...
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What is a regular expression which will match a valid domain name without a subdomain?

... This should match all cases I think: ^([a-z0-9])(([a-z0-9-]{1,61})?[a-z0-9]{1})?(\.[a-z0-9](([a-z0-9-]{1,61})?[a-z0-9]{1})?)?(\.[a-zA-Z]{2,4})+$ – transilvlad May 16 '13 at 16:38 ...
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Good example of livelock?

...ontinue; } // Spouse wasn't hungry, so finally eat spoon.use(); isHungry = false; System.out.printf( "%s: I am stuffed, my darling %s!%n", name, spouse.getName());...
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Unit Testing AngularJS directive with templateUrl

... You're correct that it's related to ngMock. The ngMock module is automatically loaded for every Angular test, and it initializes the mock $httpBackend to handle any use of the $http service, which includes template fetching. The template system tries to load the template through $http and it become...
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Rails layouts per action?

...th this is that you cannot access objects such as current_user to conditionally determine the layout – Andrew K Dec 14 '14 at 5:25 ...
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How to verify if a file exists in a batch file?

... Reminder: IF, EXIST, ELSE, REM, DEL, etc. all work in lowercase as well! – Terra Ashley Jul 19 '16 at 23:57 1 ...