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Sanitizing strings to make them URL and filename safe?

...you assumed the latter?). \w matches the underscore character. You specifically include it for files which leads to the assumption that you don't want them in URLs, but in the code you have URLs will be permitted to include an underscore. The inclusion of "foreign UTF-8" seems to be locale-dependen...
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Why do we need virtual functions in C++?

... rats, all without virtual. Let's change it a little now so that eat() is called via an intermediate function (a trivial function just for this example): // This can go at the top of the main.cpp file void func(Animal *xyz) { xyz->eat(); } Now our main function is: Animal *animal = new Anima...
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RESTful call in Java

I am going to make a RESTful call in Java. However, I don't know how to make the call. Do I need to use the URLConnection or others? Can anyone help me. thank you. ...
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How do I create a right click context menu in Java Swing?

... You are probably manually calling setVisible(true) on the menu. That can cause some nasty buggy behavior in the menu. The show(Component, int x, int x) method handles all of the things you need to happen, (Highlighting things on mouseover and clos...
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What does middleware and app.use actually mean in Expressjs?

...stack = middleware(); Then you can add layers to the middleware stack by calling .use // express app.use(express.static(..)); // middleware stack.use(function(data, next) { next(); }); A layer in the middleware stack is a function, which takes n parameters (2 for express, req & res) and a...
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What is the difference between the remap, noremap, nnoremap and vnoremap mapping commands in Vim?

...p, etc. don't work in all modes, exactly, just all the common ones (specifically, normal mode, visual mode, select mode, and operator-pending mode). If you want a mapping to work in insert, command-line, or lang-arg mode, you need to use :map!, etc. (Source: vimdoc.sourceforge.net/htmldoc/map.html#m...
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Pass arguments to Constructor in VBA

...Implement a public initiation subroutine in each of your custom classes. I call it InitiateProperties throughout all my classes. This method has to accept the arguments you would like to send to the constructor. 2.- Create a module called factory, and create a public function with the word "Create"...
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Why is __init__() always called after __new__()?

...a new instance. __new__ is the first step of instance creation. It's called first, and is responsible for returning a new instance of your class. In contrast, __init__ doesn't return anything; it's only responsible for initializing the instance after it's been created. In g...
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String comparison in Python: is vs. == [duplicate]

...x==y is also True. Not always. NaN is a counterexample. But usually, identity (is) implies equality (==). The converse is not true: Two distinct objects can have the same value. Also, is it generally considered better to just use '==' by default, even when comparing int or Boolean value...
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How do I work with a git repository within another repository?

...ce to the version of the media files? So for example if you have a project called example.com, do you need know which style.css it used 2 weeks ago, or the latest is always (or mostly) the best? If you don't need to know that, the solution is easy: create a repository for the media files and one ...