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NPM cannot install dependencies - Attempt to unlock something which hasn't been locked

I've been trying to run an npm install on my package.json file, but I'm having a lot of trouble. It keeps saying "Error: Attempt to unlock XXX, which hasn't been locked" on all my dependences. Here's one of them: ...
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Run a callback only if an attribute has changed in Rails

...ttps://github.com/rails/rails/commit/16ae3db5a5c6a08383b974ae6c96faac5b4a3c81 Here is a blog post on these changes: https://www.ombulabs.com/blog/rails/upgrades/active-record-5-1-api-changes.html Here is the summary I made for myself on the changes to ActiveRecord::Dirty in Rails 5.1+: ActiveReco...
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How to check whether an array is empty using PHP?

... 81 Some decent answers, but just thought I'd expand a bit to explain more clearly when PHP determi...
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Check if value already exists within list of dictionaries?

... Mark ByersMark Byers 683k155155 gold badges14681468 silver badges13881388 bronze badges ...
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Redirecting to a relative URL in JavaScript

I have a problem: I want to redirect via JavaScript to a directory above. My code: 7 Answers ...
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Where to find extensions installed folder for Google Chrome on Mac?

I can not find them under ~/Library/Application Support/Google/Chrome/; Where are they? 5 Answers ...
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Create aar file in Android Studio

I'd like to create an aar file for my library in Android Studio, i would've gone with a jar option but my library has resources. ...
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What does “error: option --single-version-externally-managed not recognized” indicate?

I seem to have suddenly started encounter the error error: option --single-version-externally-managed not recognized when pip install ing varions packages (including PyObjC and astropy ). I've never seen this error before, but it's now also showing up on travis-ci builds for which nothing has...
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Print a file's last modified date in Bash

I can't seem to find how to print out the date of a file. I'm so far able to print out all the files in a directory, but I need to print out the dates with it. ...
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Best way to load module/class from lib folder in Rails 3?

....3.9, there is a setting in config/application.rb in which you can specify directories that contain files you want autoloaded. From application.rb: # Custom directories with classes and modules you want to be autoloadable. # config.autoload_paths += %W(#{config.root}/extras) ...