I have a data frame containing a factor . When I create a subset of this dataframe using subset or another indexing function, a new data frame is created. However, the factor variable retains all of its original levels, even when/if they do not exist in the new dataframe. ...

I am trying to cross-compile a go app on OSX to build binaries for windows and linux. I have read everything what I could find on the net. Closest example that I have found has been published on (apart from many unfinished discussions on go-nuts mailing list): ...

I've installed and have been using the Anaconda Python distribution, and I have started using the Anaconda (Conda) environment. I can use the standard conda install... command to put packages from the distribution into my environments, but to use anything outside (i.e. Flask-WTF, flask-sqlalchem...

I've used recursion quite a lot on my many years of programming to solve simple problems, but I'm fully aware that sometimes you need iteration due to memory/speed problems. ...

I want to read and react to logcat logs within my application. 6 Answers 6 ...

I know I have already answered a similar question ( Running Batch File in background when windows boots up ), but this time I need to launch a batch: ...

My application, which uses an Oracle database, is going slow or appears to have stopped completely. 8 Answers ...

I was just reading some code and found that the person was using arr[-2] to access the 2nd element before the arr , like so: ...

MFC Grid control 2.27MFC-Grid-control-2-27MFC Grid control是一款开源的轻量级的MFC表格控件，使用比较广泛，可快速做出各种定制界面的表格。 Download Grid Control Source and Demo - 311.9 KB Preface This grid is the work of thousands of hours of squinting at...

MFC Grid control 2.27MFC-Grid-control-2-27MFC Grid control是一款开源的轻量级的MFC表格控件，使用比较广泛，可快速做出各种定制界面的表格。 Download Grid Control Source and Demo - 311.9 KB Preface This grid is the work of thousands of hours of squinting at...