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Speed up the loop operation in R
... accumulates something. (simple operation). The data.frame has roughly 850K rows. My PC is still working (about 10h now) and I have no idea about the runtime.
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How to have an auto incrementing version number (Visual Studio)? [duplicate]
...bute to end with an asterisk, for example:
[assembly: AssemblyVersion("2.10.*")]
Visual studio will increment the final number for you according to these rules (thanks galets, I had that completely wrong!)
To reference this version in code, so you can display it to the user, you use reflection. ...
What are the details of “Objective-C Literals” mentioned in the Xcode 4.4 release notes?
...key"]
[Edit 2]
The new ObjC literals were discussed in multiple WWDC 2012 sessions. I intentionally didn't remove the the filenames and the time of each slide so you can find them for yourself if you feel like. They are essentially the same thing as stated in this post, but there are also a fe...
Is “double hashing” a password less secure than just hashing it once?
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270
Hashing a password once is insecure
No, multiple hashes are not less secure; they are an essent...
Converting a string to a date in JavaScript
...omputations as UTC.
To parse a date as UTC, append a Z - e.g.: new Date('2011-04-11T10:20:30Z').
To display a date in UTC, use .toUTCString(),
to display a date in user's local time, use .toString().
More info on MDN | Date and this answer.
For old Internet Explorer compatibility (IE versions le...
Is there a way to check if a file is in use?
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answered Jun 2 '09 at 1:20
ChrisWChrisW
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Difference in months between two dates
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The quest for the Excel custom function tooltip
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+25
I've post...
javascript toISOString() ignores timezone offset [duplicate]
...llowing works as well:
var tzoffset = (new Date()).getTimezoneOffset() * 60000; //offset in milliseconds
var localISOTime = (new Date(Date.now() - tzoffset)).toISOString().slice(0, -1);
// => '2015-01-26T06:40:36.181'
The slice(0, -1) gets rid of the trailing Z which represents Zulu timezone a...
Difference between this and self in JavaScript
...ll({}); // true false false
You can find window.self defined in the W3C 2006 working draft for the Window Object here.
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