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Force SSL/https using .htaccess and mod_rewrite

...that expose stuff that should be protected. When this directive is present all requests are denied which are not using SSL. This will not do a redirect to https though. To redirect, try the following with mod_rewrite in your .htaccess file RewriteEngine On RewriteCond %{HTTPS} !=on RewriteRule ^ ...
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What is “:-!!” in C code?

...sizeof(struct { int: -!!(e); })) (e): Compute expression e. !!(e): Logically negate twice: 0 if e == 0; otherwise 1. -!!(e): Numerically negate the expression from step 2: 0 if it was 0; otherwise -1. struct{int: -!!(0);} --> struct{int: 0;}: If it was zero, then we declare a struct with an an...
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Fixed size queue which automatically dequeues old values upon new enques

...ur own queue, just use the inherited one. If you do as you do, you can actually do nothing else with the queue values, all other functions but your new Enqueue will still call the original queue. In other words, although this answer is marked as accepted, it's completely and utterly broken. ...
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What is the difference between 'my' and 'our' in Perl?

... On the other hand, our variables are package variables, and thus automatically: global variables definitely not private not necessarily new can be accessed outside the package (or lexical scope) with the qualified namespace, as $package_name::variable. Declaring a variable with our allows you...
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Event system in Python

...r methods', which is a simple implementation of the Observer pattern. Basically, the handler methods (callables) are stored in an array and are each called when the event 'fires'. Publish-Subscribe The disadvantage of Observer event systems is that you can only register the handlers on the actual Ev...
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ASP.NET Identity's default Password Hasher - How does it work and is it secure?

...ff using decimal numbers is A LOT more intuitive (we have 10 fingers after all - at least most of us), so declaring a number of something using hexadecimals seems like an unnecessary code obfuscation. – Andrew Cyrul Apr 13 '17 at 9:27 ...
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WebView and HTML5

...ient object. @Override public void onShowCustomView(View view, CustomViewCallback callback) { super.onShowCustomView(view, callback); if (view instanceof FrameLayout){ FrameLayout frame = (FrameLayout) view; if (frame.getFocusedChild() instanceof VideoView){ Vide...
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Comma in C/C++ macro

...his is also a problem for square brackets and braces, even though those usually occur as balanced pairs.) You can enclose the macro argument in parentheses: FOO((std::map<int, int>), map_var); The problem is then that the parameter remains parenthesized inside the macro expansion, which pr...
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How to implement an abstract class in ruby?

I know there is no concept of abstract class in ruby. But if at all it needs to be implemented, how to go about it? I tried something like... ...
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Encoding an image file with base64

... here is an update after you have edited your original question. First of all, remember to use raw strings (prefix the string with 'r') when using path delimiters on Windows, to prevent accidentally hitting an escape character. Second, PIL's Image.open either accepts a filename, or a file-like (tha...