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In JavaScript, why is “0” equal to false, but when tested by 'if' it is not false by itself?
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From now on, if someone says that he never uses strict comparison operators, I will face him with these tables and make him cry. Still not sure if I grasp the concept of NaN though. I mean, typeof NaN // number but NaN === NaN //...
Unicode Processing in C++
...ng so new at present.
EDIT: To clarify, C++11 is Unicode aware in that it now has support for Unicode literals and Unicode strings. However, the standard library has only limited support for Unicode processing and conversion. For your current needs this may be enough. However, if you need to do a l...
Select2 dropdown but allow new values by user?
...taken from an answer on the select2 mailing list, but cannot find the link now)
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Extracting the last n characters from a string in R
...r had been remade using stringi as a backend, so should work with NAs etc. now.
– m-dz
Jul 11 '16 at 10:09
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How to disable postback on an asp Button (System.Web.UI.WebControls.Button)
... Yeaaaaaaaaaa. no. 4 Years later and I stand behind this even more now. Just don't do any of that.
– Piotr Kula
Apr 10 '19 at 13:47
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Create an array with same element repeated multiple times
...always better to avoid growing arrays by appending when possible. If you know the final size, use it.
– Tom Karzes
Aug 8 '16 at 20:01
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How can I load storyboard programmatically from class?
... storyboard programmatically. Project was started developing with xib, and now it's very hard to nest all xib files in storyboard. So I was looking a way to do it in code, like with alloc, init, push for viewControllers. In my case I have only one controller in storyboard: UITableViewController ,...
Prevent contenteditable adding on ENTER - Chrome
...lank line(on the top of "Type some stuff"), and press enter. The cursor is now just before the "Type", not on the new blank line.
– Andrew
Dec 6 '13 at 11:23
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UIButton won't go to Aspect Fit in iPhone
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Yeah tried that, but now can't get the button to refit to the image
– marty
Aug 11 '10 at 21:34
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Drop unused factor levels in a subsetted data frame
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It is a known issue, and one possible remedy is provided by drop.levels() in the gdata package where your example becomes
> drop.levels(subdf)
letters numbers
1 a 1
2 b 2
3 c 3
> levels(dro...