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How do you delete a column by name in data.table?

...hough data.table is gradually moving away from using this argument so it's now discouraged where you can avoid it; showing here so you know the option exists in case you really do need it: # Method 5a (like Method 3) df3[, !"foo", with=FALSE] # Method 5b (like Method 4) df3[, !grep("^foo$", names(...
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How to get the absolute coordinates of a view

... Now that's the kind of function I expected to find. Unfortunately, I must not be using it properly. I realise it was a known bug that getLocationOnScreen gives a null pointer exception in Android v1.5 (the platform I'm coding...
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How to remove k__BackingField from json when Deserialize

... Now I am wondering why I thought I needed [Serializable] in the first place. My Xml serialization works without and JSON works without it. – Rhyous Mar 3 '15 at 22:19 ...
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Test method is inconclusive: Test wasn't run. Error?

... Worked for me and I don't have to clear build for the tests now. Thanks Elias. – PhoenixPan Mar 18 '19 at 0:01 add a comment  |  ...
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EC2 instance has no public DNS

... The section containing VPCs is now called Networking. And to edit, you right-click on the VPC. – nasch May 20 '15 at 19:31 92 ...
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MSBuild doesn't copy references (DLL files) if using project dependencies in solution

...roject X includes code that references assembly A (e.g. A.SomeFunction()). Now, you create a new project Y which references project X. So the dependency chain looks like this: Y => X => A => B Visual Studio / MSBuild tries to be smart and only bring references over into project Y that it ...
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HTTP 404 Page Not Found in Web Api hosted in IIS 7.5

...fectly well when I tested it using the VS 2010 debugging dev server. But I now deployed it to IIS 7.5 and I am getting a HTTP 404 error when trying to access the application. ...
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Using multiple let-as within a if-statement in Swift

...and latitude or longitude as Double") } Update: This version of the code now works properly. share | improve this answer | follow | ...
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Where am I wrong about my project and these Javascript Frameworks?

... meteor is all the rage nowadays (the most starred full-stack JavaScript framework on GitHub and Meteorpedia is a wiki engine written in Meteor. The launch video will get you hooked by 1:28. It's agnostic with regards to the UI, and has been teste...
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keytool error Keystore was tampered with, or password was incorrect

...r description I assume you are on windows machine and your home is abc So Now : Cause When you run this command keytool -genkey -alias tomcat -keyalg RSA because you are not specifying an explicit keystore it will try to generate (and in your case as you are getting exception so to update) key...