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Why is a C++ Vector called a Vector?
The question's pretty self-explanatory really. I know vaguely about vectors in maths, but I don't really see the link to C++ vectors.
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Is !important bad for performance?
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From: http://taligarsiel.com/Projects/howbrowserswork1.htm#CSS_parsing
Now, you can easily see, in such as case with the Object Model described above, the parser can mark the rules affected by the !important easily, without much of a subsequent cost. Performance degradation is not a good argumen...
Java: Date from unix timestamp
...ent the
specified number of milliseconds since
the standard base time known as "the
epoch", namely January 1, 1970,
00:00:00 GMT.
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How can I disable logging of asset pipeline (sprockets) messages in Ruby on Rails 3.1?
... end
alias_method_chain :call, :quiet_assets
end
end
Updated: It now works for Ruby on Rails 3.2 too (previous attempt fixes before_dispatch, and now we're going for the root rack call instead)
Update: A proper Rack middleware solution (instead of fragile alias_method_chain) from @macour...
How can I access my localhost from my Android device?
...hanks, this was for great help for me. The issue for me was that I didn't know that the local apache server could be addressed via the ip 10.0.2.2. ... I tries lots of other ip-adresses, like the one show by ipconfig etc. But again, thanks alot!
– Vidar Vestnes
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Link and execute external JavaScript file hosted on GitHub
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There is a good workaround for this, now, by using jsdelivr.net.
Steps:
Find your link on GitHub, and click to the "Raw" version.
Copy the URL.
Change raw.githubusercontent.com to cdn.jsdelivr.net
Insert /gh/ before your username.
Remove the branch name.
(Opt...
how to solve “ruby installation is missing psych” error?
...ven though it was successfully installed, it complained about libyaml. and now every time i wanna install a gem (say rails) this warning shows up:
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Does my application “contain encryption”?
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[UPDATE: Using HTTPS is now exempt from the ERN as of late September, 2016]
https://stackoverflow.com/a/40919650/4976373
Unfortunately, I believe that your app "contains encryption" in terms of US BIS even if you just use HTTPS (if your app is no...
Node.js check if file exists
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Anyone reading this now (Node.js v0.12.x) keep in mind that fs.exists and fs.existsSync have also been deprecated. The best way to check file existence is fs.stat, as demoed above.
– Antrikshy
Mar 29 '15 at...
How to convert floats to human-readable fractions?
...t;(double)0x7FFFFFFF) break; // AF: representation failure
}
/* now remaining x is between 0 and 1/ai */
/* approx as either 0 or 1/m where m is max that will fit in maxden */
/* first try zero */
printf("%ld/%ld, error = %e\n", m[0][0], m[1][0],
startx - ((double) ...