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How do I run a node.js app as a background service?
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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...
Ruby on Rails: how to render a string as HTML?
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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...
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...
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 ...
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:
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Is if(items != null) superfluous before foreach(T item in items)?
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You still need to check if (items != null) otherwise you will get NullReferenceException. However you can do something like this:
List<string> items = null;
foreach (var item in items ?? new List<string>())
{
item.Dump();
}
but you...
float:left; vs display:inline; vs display:inline-block; vs display:table-cell;
...asked about:
float:left;
I dislike floats because of the need to have additional markup to clear the float. As far as I'm concerned, the whole float concept was poorly designed in the CSS specs. Nothing we can do about that now though. But the important thing is it does work, and it works in all b...
Why Doesn't C# Allow Static Methods to Implement an Interface?
...d on an interface should be there to specify the contract for interacting with an object. Static methods do not allow you to interact with an object - if you find yourself in the position where your implementation could be made static, you may need to ask yourself if that method really belongs in t...
Using Kafka as a (CQRS) Eventstore. Good idea?
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Kafka is meant to be a messaging system which has many similarities to an event store however to quote their intro:
The Kafka cluster retains all published messages—whether or not they
have been consumed—for a configurable period of time. For example if
the retention is set ...