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How to generate a number of most distinctive colors in R?
...the colorBrewer package (and website). If you want diverging colours, then select diverging on the site. For example,
library(colorBrewer)
brewer.pal(7, "BrBG")
The I want hue web site gives lots of nice palettes. Again, just select the palette that you need. For example, you can get the rgb col...
req.body empty on posts
...
In Postman of the 3 options available for content type select "X-www-form-urlencoded" and it should work.
Also to get rid of error message replace:
app.use(bodyParser.urlencoded())
With:
app.use(bodyParser.urlencoded({
extended: true
}));
See https://github.com/expressjs/body...
How can I delete a service in Windows?
...hing for the command prompt on your start menu and then right-clicking and selecting "Run as administrator". Note to PowerShell users: sc is aliased to set-content. So sc delete service will actually create a file called delete with the content service. To do this in Powershell, use sc.exe delete se...
Zooming MKMapView to fit annotation pins?
...
I've also found this useful for selecting annotations outside the current visible map area. By default, MapView doesn't select non-visible annotations. Call showAnnotations with an array of your non-visible annotation(s), prior to calling selectAnnotation, ...
SQL : BETWEEN vs =
...tion.
Use an alternative longer syntax where BETWEEN doesn't work e.g.
Select EventId,EventName from EventMaster
where EventDate >= '10/15/2009' and EventDate < '10/18/2009'
(Note < rather than <= in second condition.)
...
How to change credentials for SVN repository in Eclipse?
...clipse. Another developer added an SVN repository with his credentials and selected 'Save password'. Now every time I do anything with SVN his cached credentials are used. How can I change them to mine?
...
How can I find an element by CSS class with XPath?
...
This selector should work but will be more efficient if you replace it with your suited markup:
//*[contains(@class, 'Test')]
Or, since we know the sought element is a div:
//div[contains(@class, 'Test')]
But since this will...
How do you change Background for a Button MouseOver in WPF?
...), you can use the Visual Studio XAML Designer:
While editing your XAML, select the "Design" tab.
In the "Design" tab, find the button for which you want to disable the effect.
Right-click that button, and choose "Edit Template/Edit a Copy...". Select in the prompt you get where you want the new t...
How to recognize swipe in all 4 directions
...ad()
let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(respondToSwipeGesture))
swipeRight.direction = .right
self.view.addGestureRecognizer(swipeRight)
let swipeDown = UISwipeGestureRecognizer(target: self, action: #selector(respondToSwipeGesture))
swipe...
Search stops working for “Entire Solution”
...ing, for example Windows notepad, and monitor messages (I suggest that you select only keyboard messages). Press Ctrl+Break, releasing Ctrl first. Check the output from Spy++. You will see the sequence I shown in Details section.
I have tried two different keyboards on the same computer. Logitech K...