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What should every JavaScript programmer know? [closed]
... often hiding the sometimes-ugly details of how JavaScript and the DOM actually work from you. If your aim is to be able to say “I know JavaScript”, then investing a lot of time in a framework is opposed to that.
Here are some JavaScript language features that you should know to grok what it's ...
Java enum - why use toString instead of name
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It really depends on what you want to do with the returned value:
If you need to get the exact name used to declare the enum constant, you should use name() as toString may have been overriden
If you want to print the enum const...
How do I run a Node.js application as its own process?
.../bin
Environment=NODE_ENV=production
WorkingDirectory=/var/www/myapp
[Install]
WantedBy=multi-user.target
Note if you're new to Unix: /var/www/myapp/app.js should have #!/usr/bin/env node on the very first line.
Copy your service file into the /etc/systemd/system folder.
Tell systemd about the ...
CSS3 box-sizing: margin-box; Why not?
Why don't we have box-sizing: margin-box; ? Usually when we put box-sizing: border-box; in our style sheets we really mean the former.
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get CSS rule's percentage value in jQuery
...n also confirm it works for me where the other answers don't get the originally assigned percentage value.
– EricP
Nov 12 '13 at 4:14
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How to request Google to re-crawl my website? [closed]
... you can follow the directions to submit a sitemap.
Your second (and generally slower) option is, as seanbreeden pointed out, submitting here: http://www.google.com/addurl/
Update 2019:
Login to - Google Search Console
Add a site and verify it with the available methods.
After verification from ...
How can I remove duplicate rows?
.../02/18/not-exists-vs-not-in Out of the 3 I think NOT EXISTS performs best. All three will generate a plan with a self join though that can be avoided.
– Martin Smith
Jan 14 '11 at 9:17
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What is the difference between null and undefined in JavaScript?
...he typeof operator returns 'object' for a value that is null. This was actually an error in the original JavaScript implementation that was then copied in ECMAScript. Today, it is rationalized that null is considered a placeholder for an object, even though, technically, it is a primitive value."
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convert String to DateTime
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DateTime.strptime allows you to specify the format and convert a String to a DateTime.
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Private pages for a private Github repo
... support ticket against Github and got a response confirming the fact that ALL pages are public. I've now requested them to add a note to help.github.com/pages.
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