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What does threadsafe mean?
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answered Jan 9 '10 at 15:51
Gregory PakoszGregory Pakosz
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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...
Android EditText delete(backspace) key event
...anampullan
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The cause of “bad magic number” error when loading a workspace and how to avoid it?
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Laurenz Albe
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answered Feb 2 '14 at 0:57
Chris SHChris SH...
Django DB Settings 'Improperly Configured' Error
... Pavel AnossovPavel Anossov
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How to use glyphicons in bootstrap 3.0
...dy used glyphicons in bootstrap 2.3 but now I have upgraded to bootstrap 3.0. Now, I am unable to use the icon property.
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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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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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