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Fastest way to replace NAs in a large data.table
...er, too
identical(a_gdata, dt1)
[1] TRUE
I wish I did it that way to start with!
EDIT2 (over 1 year later, now)
There is also set(). This can be faster if there are a lot of column being looped through, as it avoids the (small) overhead of calling [,:=,] in a loop. set is a loopable :=. See ...
How do I enter RGB values into Interface Builder?
...because you might tab to the Hex box, which resets to sRGB and you have to start all over again.
– bcr
Jul 6 '15 at 2:49
1
...
How to organize a node app that uses sequelize?
...
I started using Sequelize in Express.js app. Soon enough ran into issues of the nature you're describing. Maybe I did not quite understand Sequelize, but to me doing things more than just selecting from one table wasn't really ...
How to fix corrupted git repository?
... file changes thanks to the OS notifications). This is bad because it will start to upload changes as soon as you are doing a change, and then download the change, so it might erase the latest changes you were just doing. A solution to fix this issue is to set the changes monitoring delay to 5 minut...
Expand/collapse section in UITableView in iOS
...ions.plist (i've tested this with 30 entries in the root dictionary) - Now start the app and open the first play - after that you scroll down until you see an arrow which is pointing down (i think this comes from dequeueReusableHeaderFooterViewWithIdentifier) - click that arrow and scroll back to th...
Is it possible for git-merge to ignore line-ending differences?
...nflict for 'a.txt':
{local}: modified
{remote}: modified
Hit return to start merge resolution tool (diffmerge):
At this point (Hitting "return"), DiffMerge or KDiff3 will open, and you will see for yourself what lines are actually merged, and what lines are ignored.
Warning: the result file wil...
What's the purpose of git-mv?
...icit with your intention and to avoid some errors.
Consider this example. Starting with an empty repo,
git init
echo "First" >a
echo "Second" >b
git add *
git commit -m "initial commit"
mv a c
mv b a
git status
Result:
# On branch master
# Changes not staged for commit:
# (use "git add/...
Difference between malloc and calloc?
...or equivalent). Usually this kind of allocation is used for larger chunks, starting at 256k or so. I don't know of any implementations that do the comparison against zero before writing zero aside from my own.
– R.. GitHub STOP HELPING ICE
Jan 5 '11 at 15:57
...
HttpURLConnection timeout settings
...REQUEST_TIMEOUT);
Looper.loop();
}
};
timeout.start();
}
abstract protected Result doInBackgroundImpl(Params... params);
}
A Sample for this
public class AsyncTaskWithTimerSample extends AsyncTaskWithTimer<Void, Void, Void> {
@Override
protected void o...
Troubleshooting “The use statement with non-compound name … has no effect”
...he use statement, because its arguments are always seen as absolute (i.e., starting from the global namespace). 2) use Blog; is not necessarily useless: for example, from a file namespaced as Blog\Util\CLI, it would enable you to write Blog\Entry::method() instead of \Blog\Entry::method(). Not that ...