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Unable to create/open lock file: /data/mongod.lock errno:13 Permission denied
...tp://d36cz9buwru1tt.cloudfront.net/AWS_NoSQL_MongoDB.pdf
Mongodb path in /etc/mongodb.conf was set to /var/lib/mongodb (primary install location and working). When I changed to /data/db (EBS volume) I was getting 'errno:13 Permission denied'.
First I ran sudo service mongodb stop.
Then I used ls ...
What is the difference between service, directive and module?
... wire up a number of other things, such as directives, services, constants etc. Modules can be injected into other modules giving you a high level of reuse.
When writing an angular app, you would have a top-level module which is your application code (without templates).
Services are mainly a way...
Java packages com and org
... by non-profit organizations or for open source code, such as apache, w3c, etc.
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Some font-size's rendered larger on Safari (iPhone)
...Ems are scalable in nature, so 2em would equal 24pt, .5em would equal 6pt, etc. Ems are becoming increasingly popular in web documents due to scalability and their mobile-device-friendly nature.
Pixels (px): Pixels are fixed-size units that are used in screen media (i.e. to be read on the computer s...
View's getWidth() and getHeight() returns 0
...unnable. This basically queues your code after the view's measure, layout, etc. as stated by Romain Guy:
The UI event queue will process events in order. After
setContentView() is invoked, the event queue will contain a message
asking for a relayout, so anything you post to the queue will happen
af...
How do I set default values for functions parameters in Matlab?
...ault'
end
end
There are a few fancier things you can do with isempty, etc., and you might want to look at Matlab central for some packages that bundle these sorts of things.
You might have a look at varargin, nargchk, etc. They're useful functions for this sort of thing. varargs allow you to ...
What is the difference between JavaScript and ECMAScript?
... between JavaScript and ECMAScript versions, e.g. ES5 corresponds to JS1.5 etc. ah I found it: en.wikipedia.org/wiki/JavaScript#Versions
– Sam Joseph
Oct 6 '12 at 17:35
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What is the best django model field to use to represent a US dollar amount?
... show it to the final user in the representation that you want (BTC, mBTC, etc)
– jion
Jan 21 '18 at 6:01
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gradle build fails on lint task
... // if true, show all locations for an error, do not truncate lists, etc.
showAll true
// Fallback lint configuration (default severities, etc.)
lintConfig file("default-lint.xml")
// if true, generate a text report of issues (false by default)
textRepor...
Is there a way for multiple processes to share a listening socket?
...annot bind(); just the original parent process would call bind(), listen() etc, the child processes would just process requests by accept(), send(), recv() etc.
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