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Flattening a shallow list in Python [duplicate]
Is there a simple way to flatten a list of iterables with a list comprehension, or failing that, what would you all consider to be the best way to flatten a shallow list like this, balancing performance and readability?
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How to change to an older version of Node.js
... Version Manager.
Use following command to get nvm
curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.34.0/install.sh | bash
You can find it at https://github.com/creationix/nvm
It allows you to easily install and manage multiple versions of node. Here's a snippet from the help:
Usa...
how to release localhost from Error: listen EADDRINUSE
i am testing a server written in nodejs on windows 7
and when i try to run the tester in the command line i get the following error
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Unpacking array into separate variables in JavaScript
This is a simple problem, and I've done it before. I just can't remember how, or what exactly it was called.
7 Answers
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throws Exception in finally blocks
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I usually do it like this:
try {
// Use the resource.
} catch( Exception ex ) {
// Problem with the resource.
} finally {
// Put away the resource.
closeQuietly( resource );
}
Elsewhere:
protected void closeQuietly( Resource r...
How do I partially update an object in MongoDB so the new object will overlay / merge with the exist
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If I understand the question correctly, you want to update a document with the contents of another document, but only the fields that are not already present, and completely ignore the fields that are already set (even if to another value).
There is no way to do that in a single command.
You h...
Fastest way to serialize and deserialize .NET objects
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Here's your model (with invented CT and TE) using protobuf-net (yet retaining the ability to use XmlSerializer, which can be useful - in particular for migration); I humbly submit (with lots of evidence if you need it) that this is the fastest (...
How to disable Crashlytics during development
...lytics.start() in an if statement that checks a debug flag. You could use either a custom flag or an approach like the ones proposed here: How to check if APK is signed or "debug build"?
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im...
Flatten an Array of Arrays in Swift
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edited Nov 6 '19 at 9:16
Nik Kov
9,02633 gold badges5252 silver badges8484 bronze badges
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How do short URLs services work?
... TinyURL or Metamark work?
Do they simply associate the tiny URL key with a [virtual?] web page which merely provide an "HTTP redirect" to the original URL? or is there more "magic" to it ?
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