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Convert column classes in data.table
...m 0.0459 2.0113 0.5186 -0.8348 -0.2185 ...
$ val2: num -0.0688 0.6544 0.267 -0.1322 -0.4893 ...
- attr(*, ".internal.selfref")=<externalptr>
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How to check if a process id (PID) exists
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267
The best way is:
if ps -p $PID > /dev/null
then
echo "$PID is running"
# Do somethin...
How to set UICollectionViewDelegateFlowLayout?
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Just self.collectionView.delegate = self;. Note that UICollectionViewDelegateFlowLayout inheri...
Get the current first responder without using a private API
...any come here with a question in mind that this answer answers :) At least 267 (at the moment) of them...
– Rok Jarc
May 8 '13 at 17:02
1
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Add an already existing directory to a directory in Solution Explorer
...3-9474-1A3956D46DE8}") = "NewFolder1", "NewFolder1", "{73ED84FC-F250-4CCC-B267-34CEB67F2883}"
EndProject
Delete from "Project" to "EndProject" ONLY for the specific Project/Folder you're having trouble with.
You may get a message in VS2012 that says your solution has been modified by an external s...
How to disable word-wrap in Xcode 4 editor?
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267
Go to Xcode Preferences -> Text Editing -> Indentation and deselect Line wrapping.
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Check difference in seconds between two times
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267
Assuming dateTime1 and dateTime2 are DateTime values:
var diffInSeconds = (dateTime1 - dateTi...
How can I find which tables reference a given table in Oracle SQL Developer?
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No. There is no such option available from Oracle SQL Developer.
You have to execute a query...
Force browser to download image files on click
...e.src = "https://is3-ssl.mzstatic.com/image/thumb/Music62/v4/4b/f6/a2/4bf6a267-5a59-be4f-6947-d803849c6a7d/source/200x200bb.jpg";
// get file name - you might need to modify this if your image url doesn't contain a file extension otherwise you can set the file name manually
var fileName = image.sr...
Can we have functions inside functions in C++?
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For all intents and purposes, C++ supports this via lambdas:1
int main() {
auto f = []() ...