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support FragmentPagerAdapter holds reference to old fragments
... with a tag that is unknown to you. This is by design; you are discouraged from messing with the fragments that the view pager is managing. You should be performing all your actions within a fragment, communicating with the activity, and requesting to switch to a particular page, if necessary.
Now,...
Omit rows containing specific column of NA
... put it into a function thusly:
DF <- data.frame(x = c(1, 2, 3), y = c(0, 10, NA), z=c(NA, 33, 22))
completeFun <- function(data, desiredCols) {
completeVec <- complete.cases(data[, desiredCols])
return(data[completeVec, ])
}
completeFun(DF, "y")
# x y z
# 1 1 0 NA
# 2 2 10 33
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Delete file from internal storage
...ontext.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.fromFile(file)));
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What is the difference between FragmentPagerAdapter and FragmentStatePagerAdapter?
...apter. However, the last page still gets redrawn when I swipe across to it from the first page. To solve this, I have used viewPager.setOffscreenPageLimit(2).
– ban-geoengineering
Jul 27 '18 at 16:56
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Is modern C++ becoming more prevalent? [closed]
... getting started with the language seem to be taught these concepts almost from day 1.
18 Answers
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How to convert a currency string to a double with jQuery or Javascript?
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Remove all non dot / digits:
var currency = "-$4,400.50";
var number = Number(currency.replace(/[^0-9.-]+/g,""));
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Getting rid of \n when using .readlines() [duplicate]
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The url proposed from @bfrederix is broken. Here an archive.org copy web.archive.org/web/20160215030807/http://axialcorps.com/2013/…
– Paolo Melchiorre
Oct 24 '18 at 9:45
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How do I get the directory from a file's full path?
What is the simplest way to get the directory that a file is in? I'm using this to set a working directory.
12 Answers
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Resetting remote to a certain commit
... There's a nice explanation of your options for doing this in this answer from Jakub Narębski. Which one is most convenient depends on how many commits you want to revert, and which method makes most sense to you.
Since from your question it's clear that you have already used git reset --hard to...