Monday, October 10, 2016

R - getting list of libraries installed


to get a list of installed packages in your R, just use the following command :-

installed.packages()

You can also list core libraries by using the following command

installed.packages(priority = "base")

"base"  must be lower case. 

Thursday, October 06, 2016

Reading css specification



As long as I can remember, i don't really read html / css specifications. Maybe I should get into that habit.

Think today is a good start, as i have the know-how to read css specification. was trying to figure out if min-width is applicable to table.

Found the answer here.


Hopefully no more TLDR thingie ! :)

Wednesday, October 05, 2016

OpenCover code coverage for .Net Core


I know there are many post out there getting code coverage for .dotnetcore. I'm using opencover to address this needs.

In case, you do no want to use opencover and wanted to stick with vs2015 code coverage, you can try to copy Microsoft.VisualStudio.CodeCoverage.Shim.dll from C:\Program Files (x86)\Microsoft Visual Studio 14.0\Team Tools\Dynamic Code Coverage Tools\coreclr\ and drop it into your project "bin\Debug\netcoreapp1.0" folder.  Please note : you need to be on VS2015 Enterprise to do this. 

To get started, I guess we need to add OpenCover and ReportGenerator for our test projects, as shown in diagram below :-



When nuget packge gets restored, we will have some binaries downloaded to our machine and we going to use this to generate some statistics. I think the biggest issue is to getting those command lines work.

In dotnetcore, we run test project using "dotnet test" (assuming you are in the test project folder - if not please go there)  So we add this on top of OpenCover, as illustrated in command line below :-

C:\Users\jeremy\.nuget\packages\OpenCover\4.6.519\tools\OpenCover.Console.exe -target:"dotnet.exe" -targetargs:" test ""


There will be huge chunks of information being generated. So we need reportgenerator to help us do some summary.  If you can just run the following command :-


C:\Users\jeremy\.nuget\packages\ReportGenerator\2.4.5\tools\ReportGenerator.exe -reports:opencover_results.xml -targetdir:coverage  

A sample of the report looks like this. Yeap my project is current a mess. :)




Github source to be added soon.