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Convert Pandas column containing NaNs to dtype `int`
I read data from a .csv file to a Pandas dataframe as below. For one of the columns, namely id , I want to specify the column type as int . The problem is the id series has missing/empty values.
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Mockito verify order / sequence of method calls
Is there a way to verify if a methodOne is called before methodTwo in Mockito?
4 Answers
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Splitting on first occurrence
What would be the best way to split a string on the first occurrence of a delimiter?
5 Answers
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How to pass macro definition from “make” command line arguments (-D) to C source code?
I usually pass macro definitions from "make command line" to a "makefile" using the option :
-Dname=value. The definition is accessible inside the makefile.
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How to tell where a header file is included from?
How can I tell where g++ was able to find an include file? Basically if I
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sqlalchemy unique across multiple columns
Let's say that I have a class that represents locations. Locations "belong" to customers. Locations are identified by a unicode 10 character code. The "location code" should be unique among the locations for a specific customer.
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How to show first commit by 'git log'?
I have a project which has long history. I want to show the first commit on git.
6 Answers
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background function in Python
I've got a Python script that sometimes displays images to the user. The images can, at times, be quite large, and they are reused often. Displaying them is not critical, but displaying the message associated with them is. I've got a function that downloads the image needed and saves it locally. Rig...
Enable zooming/pinch on UIWebView
I have an UIWebView with a pdf-file. It works fine. But how can i enable zooming on the pdf-file?
6 Answers
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Why are Objective-C delegates usually given the property assign instead of retain?
I'm surfing through the wonderful blog maintained by Scott Stevenson, and I'm trying to understand a fundamental Objective-C concept of assigning delegates the 'assign' property vs 'retain'. Note, the both are the same in a garbage collected environment. I'm mostly concerned with a non-GC based envi...