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What does -save-dev mean in npm install grunt --save-dev
...uch modules should only be needed when developing the app (eg grunt, mocha etc).
According to the package.json docs
Edit: Attempt at visualising what npm install does:
yourproject
dependency installed
dependency installed
dependency installed
devDependency NOT installed
devDependency NOT ...
Difference between malloc and calloc?
...e client process. This works same way memory mapped files, virtual memory, etc. work.. it uses paging.
Here is one optimization story about the topic:
http://blogs.fau.de/hager/2007/05/08/benchmarking-fun-with-calloc-and-zero-pages/
...
HttpURLConnection timeout settings
...
HttpURLConnection has a setConnectTimeout method.
Just set the timeout to 5000 milliseconds, and then catch java.net.SocketTimeoutException
Your code should look something like this:
try {
HttpURLConnection.setFollowRedirects(false);
HttpU...
How do I start a program with arguments when debugging?
... {
Console.SetOut(sw); // this makes any Console.Writes etc go to sw
Program.Main(new[] { "argument" });
var result = sw.ToString();
Assert.AreEqual("expected", result);
}
}
}
This way you can, in an automated way, test multiple...
How to open every file in a folder?
...rent directory using os.listdir:
import os
for filename in os.listdir(os.getcwd()):
with open(os.path.join(os.cwd(), filename), 'r') as f: # open in readonly mode
# do your stuff
Glob
Or you can list only some files, depending on the file pattern using the glob module:
import glob
for ...
Current time formatting with Javascript
...d you will see that you can extract all the bits (date, month, year, hour, etc).
http://www.w3schools.com/jsref/jsref_obj_date.asp
For something like Fri 23:00 1 Feb 2013 the code is like:
date = new Date();
weekdayNames = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
monthNames = ["...
Why is #!/usr/bin/env bash superior to #!/bin/bash?
...h_installed_on_this_system="$(\
awk -F'/' '$NF == "bash"{print}' "/etc/shells"\
)"
for bash in $all_bash_installed_on_this_system
do
versinfo="$( $bash -c 'echo ${BASH_VERSINFO}' )"
[ "${versinfo}" -eq "${DESIRED_VERSION}" ] && { found=1 ; break;}
...
What does “./bin/www” do in Express 4.x?
...
Ultimately, you could have different scripts like test, stop, or restart, etc. Having this structure allows you to have different startup configurations, without cramming everything into app.js.
The correct way to start your Express app is:
npm start
To deploy an Express 4.x app to Heroku, add...
How to change the name of a Django app?
...step is deployed through all active checkouts (CI, other devs, production, etc) before the next step is tackled, it worked perfectly -- no problems with the existing historical migrations. Do the steps in order, and propagate the changes everywhere before moving to the following step.
...
Mediator Vs Observer Object-Oriented Design Patterns
...ter themselves and receive notifications upon events, e. g. ButtonListener etc.
Both of these patterns allow for lesser coupling, but are quite different.
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