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How do I get the object if it exists, or None if it does not exist?
...irst()
Now go variable could be either the object you want or None
Ref: https://docs.djangoproject.com/en/1.8/ref/models/querysets/#django.db.models.query.QuerySet.first
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Installing in Homebrew errors
...wn will not work:
sudo chown -R $(whoami) $(brew --prefix)/*
Link:
https://github.com/Homebrew/brew/issues/3228
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How to make gradient background in android
...o newly created drawable gradient
btn.setBackground(gd);
Refer from here
https://android--code.blogspot.in/2015/01/android-button-gradient-color.html
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Android Studio Checkout Github Error “CreateProcess=2” (Windows)
...
Steps:
1) Download git for windows https://git-scm.com/downloads
2) Install downloaded git with default setup
3) From Android Studio close if any project is open then Click on Configure -> Settings -> Version Control -> Git
4) Change Path to Gi...
Is there a job scheduler library for node.js? [closed]
...
I am using kue: https://github.com/learnboost/kue . It is pretty nice.
The official features and my comments:
delayed jobs.
If you want to let the job run at a specific time, calculate the milliseconds between that time and now. Call jo...
Simulate limited bandwidth from within Chrome?
...Xcode:
Go to the Apple Download Center and search for Hardware IO Tools
https://developer.apple.com/downloads/index.action
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Trigger a keypress/keydown/keyup event in JS/jQuery?
... cents. I've been working on mouse click simulation when using this site: https://www.youtube.com/tv. You can open any video and try run this code. It performs switch to next video.
function triggerEvent(el, type, keyCode) {
if ('createEvent' in document) {
// modern browsers, IE9+...
Can I read the hash portion of the URL on my server-side application (PHP, Ruby, Python, etc.)?
...ost:8000/hello?foo=bar#this-is-not-sent-to-server
python -c "import SimpleHTTPServer;SimpleHTTPServer.test()"
Serving HTTP on 0.0.0.0 port 8000 ...
localhost - - [02/Jun/2009 12:48:47] code 404, message File not found
localhost - - [02/Jun/2009 12:48:47] "GET /hello?foo=bar HTTP/1.1" 404 -
The se...
How do you check if a certain index exists in a table?
...s syntax is available since SQL Server 2016. Documentation for IF EXISTS:
https://blogs.msdn.microsoft.com/sqlserverstorageengine/2015/11/03/drop-if-exists-new-thing-in-sql-server-2016/
In case you deal with a primery key instead, then use this:
ALTER TABLE [TableName] DROP CONSTRAINT IF EXISTS [...
Auto reloading a Sails.js app on code changes?
...ers (views do not require reloading):
npm install sails-hook-autoreload
https://www.npmjs.com/package/sails-hook-autoreload
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