missing-features

I recently installed Android Studio 3.1.3 on my laptop in order to start learning android/mobile development (I am still new to all of this). The LogCat option seems to be missing though (refer to images below) What I tried to do in order to fix the problem: -uninstalling and reinstalling android studio (along with updating it...) -researching the problem (no useful results as all the solutions were to press alt-6 or go to View->Tool Windows) It would be a huge help/relief if someone knows how to solve this problem. Thanks in advance. I know it is an old question, but I encountered this

I'm interested to specify types of missing values. I have data that have different types of missing and I am trying to code these values as missing in R, but I am looking for a solution were I can still distinguish between them. Say I have some data that looks like this, set.seed(667) df <- data.frame(a = sample(c("Don't know/Not sure","Unknown","Refused","Blue", "Red", "Green"), 20, rep=TRUE), b = sample(c(1, 2, 3, 77, 88, 99), 10, rep=TRUE), f = round(rnorm(n=10, mean=.90, sd=.08), digits = 2), g = sample(c("C","M","Y","K"), 10, rep=TRUE) ); df # a b f g # 1 Unknown 2 0.78 M # 2 Refused 2 0

As this says: http://web.archive.org/web/20090624083829/http://mail.python.org/pipermail/python-list/2003-May/206149.html Function overloading is absent in Python. As far as I feel this a big handicap since its also an OO language. Initially I found that unable to differentiate between the argument types was difficult but the dynamic nature of Python made it easy (e.g. list, tuples, strings are much similar). However counting the number of arguments passed and then doing the job is like an overkill. As unwind noted, keyword arguments with default values can go a long way. I'll also state that