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How to delete multiple values from a vector?
...LSE FALSE
> a [! a %in% remove]
[1] 10 7 1 6 4 8 9
Note that this will silently remove incomparables (stuff like NA or Inf) as well (while it will keep duplicate values in a as long as they are not listed in remove).
If a can contain incomparables, but remove will not, we can use matc...
What do the makefile symbols $@ and $< mean?
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$@ is the name of the target being generated, and $< the first prerequisite (usually a source file). You can find a list of all these special variables in the GNU Make manual.
For example, consider the following declaration:
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What's the difference between `on` and `live` or `bind`?
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on() is an attempt to merge most of jQuery's event binding functions into one. This has the added bonus of tidying up the inefficiencies with live vs delegate. In future versions of jQuery, these methods will be removed and only...
Android Studio Editor Font Sizing
Is there any way to make the editor text larger in Android Studio?
10 Answers
10
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sed edit file in place
I am trying to find out if it is possible to edit a file in a single sed command without manually streaming the edited content into a new file and then renaming the new file to the original file name. I tried the -i option but my Solaris system said that -i is an illegal option. Is there a d...
What is ActiveMQ used for - can we apply messaging concept using a Database?
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It is used to reliably communicate between two distributed processes.
Yes, you could store messages in a Database to communicate between two processes, but, as soon as the message is received you'd have to DELETE the message,...
Detect Retina Display
...provides an easy way to check if the currentDevice has an high-resolution display (retina) ?
14 Answers
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Difference between __getattr__ vs __getattribute__
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A key difference between __getattr__ and __getattribute__ is that __getattr__ is only invoked if the attribute wasn't found the usual ways. It's good for implementing a fallback for missing attributes, and is probably the one of two you want.
__getattribute__ is invoked before loo...
Jelly Bean DatePickerDialog — is there a way to cancel?
...to moderators: Today (July 15), I've noticed that someone already faced this problem here . But I'm not sure if it's appropriate to close this as a duplicate, since i think I provided a much better explanation of the issue. I'm not sure if I should edit the other question and paste this content th...
Is there a native jQuery function to switch elements?
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I've found an interesting way to solve this using only jQuery:
$("#element1").before($("#element2"));
or
$("#element1").after($("#element2"));
:)
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