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What's the best way to do “application settings” in Android? [closed]
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150
Many applications may provide a way to capture user preferences on the settings of a specific ap...
Subset of rows containing NA (missing) values in a chosen column of a data frame
....na() instead. This should do it:
new_DF <- DF[rowSums(is.na(DF)) > 0,]
or in case you want to check a particular column, you can also use
new_DF <- DF[is.na(DF$Var),]
In case you have NA character values, first run
Df[Df=='NA'] <- NA
to replace them with missing values.
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How do I wait for an asynchronously dispatched block to finish?
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304
Trying to use a dispatch_semaphore. It should look something like this:
dispatch_semaphore_t s...
UIRefreshControl on UICollectionView only works if the collection fills the height of the container
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LarryLarry
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Count immediate child div elements using jQuery
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answered Oct 30 '08 at 15:49
Garry ShutlerGarry Shutler
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No line-break after a hyphen
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590
Try using the non-breaking hyphen &#8209;. I've replaced the dash with that character in you...
Javascript: How to detect if browser window is scrolled to bottom?
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answered Feb 25 '12 at 0:03
mVChrmVChr
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Subscript and Superscript a String in Android
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160
((TextView)findViewById(R.id.text)).setText(Html.fromHtml("X<sup>2</sup>"));
or
C...
Calc of max, or max of calc in CSS
... them.
Therefore the original example can be written as:
max-width: max(500px, 100% - 80px);
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What are the benefits of learning Vim? [closed]
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I've been using vi and vim also for some 20 years, and I'm still learning new things.
David Rayner's Best of Vim Tips site is an excellent list, though it's probably more useful once you have some familiarity with vim.
I also want to mention the ViEmu site which ha...