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How can I calculate an md5 checksum of a directory?
I need to calculate a summary md5 checksum for all files of a particular type ( *.py for example) placed under a directory and all sub-directories.
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Install dependencies globally and locally using package.json
Using npm we can install the modules globally using -g option. How can we do this in the package.json file?
6 Answers
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Obtain form input fields using jQuery?
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$('#myForm').submit(function() {
// get all the inputs into an array.
var $inputs = $('#myForm :input');
// not sure if you wanted this, but I thought I'd add it.
// get an associative array of just the values.
var values = {};
$inputs.each(fun...
Update Git branches from master
...his approach. When I run git log --graph, the graph show the master is actually merged to the topic branch. Will this cause any problem in the long run? I thought the best practice is always merge the topic branch back to master. Please comment.
– Patrick
Nov 1...
Why is lock(this) {…} bad?
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It is bad form to use this in lock statements because it is generally out of your control who else might be locking on that object.
In order to properly plan parallel operations, special care should be taken to consider possible deadlock situations, and having an unknown number of lock en...
You have already activated X, but your Gemfile requires Y
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Using bundle exec is the right way to do this.
Basically what's happening is that you've updated rake to 0.9.2 which now conflicts with the version specified in your Gemfile. Previously the latest version of rake you had matched the version in your Gemfile, so you didn't get a...
Javascript array search and remove string?
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I'm actually updating this thread with a more recent 1-line solution:
let arr = ['A', 'B', 'C'];
arr = arr.filter(e => e !== 'B'); // will return ['A', 'C']
The idea is basically to filter the array by selecting all elements d...
EC2 Instance Cloning
Is it possible to clone a EC2 instance data and all?
7 Answers
7
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What exactly do the Vagrant commands do?
...produces the information that you may need.
vagrant gem is used to install Vagrant plugins via the RubyGems
system. In fact, vagrant gem is just a frontend to the actual gem
interface, with the difference being that Vagrant sets up a custom
directory where gems are installed so that they a...
Matching a space in regex
...X is the physical tab character (and each is preceded by a single space in all those examples).
These will work in every* regex engine I've ever seen (some of which don't even have the one-or-more "+" character, ugh).
If you know you'll be using one of the more modern regex engines, "\s" and its v...