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How can I remove all objects but one from the workspace in R?
...ghtly different question - I needed to be able to delete all objects in R (including functions) except a handful of vectors.
One way to do this:
rm(list=ls()[! ls() %in% c("a","c")])
Where the vectors that I want to keep are named 'a' and 'c'.
Hope this helps anyone searching for the same solut...
Can you have a within a ?
...f tags inside them? which makes it completely clear.
HTML5 specification (including the most current draft of HTML 5.3 dated November 16, 2017) changes terminology, but it's still perfectly valid to place span inside another span.
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Protected methods in Objective-C
... but you will get a warning from the compiler, if that method isn't in any included interface.
– Kaiserludi
Jun 19 '13 at 17:37
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UIRefreshControl - beginRefreshing not working when UITableViewController is inside UINavigationCont
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This is by far the most elegant way to do it. Including Colin Basnett's comment for better functionality. it can be used across the whole project by defining it once!
– JoeGalind
Aug 14 '16 at 4:12
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UITapGestureRecognizer tap on self.view but ignore subviews
...eceive:). With this code, a tap on a subview of the ViewController's view (including imageView) won't trigger the printHello(_:) method.
import UIKit
class ViewController: UIViewController, UIGestureRecognizerDelegate {
override func viewDidLoad() {
super.viewDidLoad()
let ta...
What's the fastest way to delete a large folder in Windows?
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/f - Force (i.e. delete files even if they're read only)
/s - Recursive / Include Subfolders (this definition from SS64, as technet simply states "specified files", which isn't helpful).
/q - Quiet (i.e. do not prompt user for confirmation)
Documentation for rmdir here. Parameters are:
/s - Re...
SQL Server principal “dbo” does not exist,
...QL authentication
KB913423 - You cannot run a statement or a module that includes the EXECUTE AS clause after you restore a database in SQL Server 2005
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How to check for null in Twig?
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@STTLCU He's including if var is not null.
– crmpicco
Oct 30 '15 at 16:04
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Auto-indent in Notepad++
... can get it from the ZIP 5.9.0 version. Some of the later versions did not include this DLL. notepad-plus-plus.org/download/v5.9.0.html
– Fostah
Mar 9 '12 at 18:31
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How can I delay a method call for 1 second?
...t to use the dispatch_after you should be looking for the snippet which is included inside the Code Snippet Library at the right bottom (where you can select the UI elements).
So you just need to call this snippet by writing dispatch in code:
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