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The Definitive C Book Guide and List

This question attempts to collect a community-maintained list of quality books on the c programming language, targeted at various skill levels. ...
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Why does jQuery or a DOM method such as getElementById not find the element?

... you were trying to find wasn’t in the DOM when your script ran. The position of your DOM-reliant script can have a profound effect upon its behavior. Browsers parse HTML documents from top to bottom. Elements are added to the DOM and scripts are (generally) executed as they're encountered. This ...
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In Git, how can I write the current commit hash to a file in the same commit

I'm trying to do a fancy stuff here with Git hooks, but I don't really know how to do it (or if it's possible). 7 Answers ...
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Ruby on Rails: how to render a string as HTML?

... UPDATE For security reason, it is recommended to use sanitize instead of html_safe. Link What's happening is that, as a security measure, Rails is escaping your string for you because it might have malicious code embedded in it. But if yo...
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When to use static vs instantiated classes

PHP is my first programming language. I can't quite wrap my head around when to use static classes vs instantiated objects. ...
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Why is a pure virtual function initialized by 0?

...dn't think he could get another keyword, such as "pure" past the C++ community at the time the feature was being implemented. This is described in his book, The Design & Evolution of C++, section 13.2.3: The curious =0 syntax was chosen ... because at the time I saw no chance of getting ...
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How do I run a node.js app as a background service?

... Copying my own answer from How do I run a Node.js application as its own process? 2015 answer: nearly every Linux distro comes with systemd, which means forever, monit, PM2, etc are no longer necessary - your OS already handles these tasks. Make a myapp.service file (replacing 'myapp' w...
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FileSystemWatcher vs polling to watch for file changes

...e system watcher fail in production and test environments. I now consider it a convenience, but I do not consider it reliable. My pattern has been to watch for changes with the files system watcher, but poll occasionally to catch missing file changes. Edit: If you have a UI, you can also give y...
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How do I fix PyDev “Undefined variable from import” errors?

...a settings object. I import that in module b and assign an attribute with: 13 Answers ...
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Why do you use typedef when declaring an enum in C++?

I haven't written any C++ in years and now I'm trying to get back into it. I then ran across this and thought about giving up: ...