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Determine the data types of a data frame's columns
I'm using R and have loaded data into a dataframe using read.csv() . How do I determine the data type of each column in the data frame?
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Can I browse other people's (Apple) bug reports? [closed]
...efore posting, but I can't see any way to do this. I can only see my bugs, and post new bugs, but I can't see any way to browse or search the whole bug system.
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Visual Studio build fails: unable to copy exe-file from obj\debug to bin\debug
...ducing this bug can be found here at Microsoft Connect. I have also tested and verified that the solution given in the accepted answer below works on that sample project. If this solution doesn't work for you, you are probably having a different issue (which belongs in a separate question).
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Why are preprocessor macros evil and what are the alternatives?
...d encountered a phrase like "macro should never be used", "macro are evil" and so on, my question is: why? With the new C++11 is there a real alternative after so many years?
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Return multiple columns from pandas apply()
I have a pandas DataFrame, df_test . It contains a column 'size' which represents size in bytes. I've calculated KB, MB, and GB using the following code:
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Interface or an Abstract Class: which one to use?
Please explain when I should use a PHP interface and when I should use an abstract class ?
11 Answers
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Unit Testing C Code [closed]
...rk in C is Check; a list of unit testing frameworks in C can be found here and is reproduced below. Depending on how many standard library functions your runtime has, you may or not be able to use one of those.
AceUnit
AceUnit (Advanced C and Embedded Unit) bills itself as a comfortable C code uni...
Make .git directory web inaccessible
I have a website that I use github (closed source) to track changes and update site. The only problem is, it appears the .git directory is accessible via the web. How can I stop this and still be able to use git?
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Python json.loads shows ValueError: Extra data
I am getting some data from a JSON file "new.json", and I want to filter some data and store it into a new JSON file. Here is my code:
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Bash ignoring error for a particular command
...shell to think that the entire pipe has non-zero exit code
when one of commands in the pipe has non-zero exit code (with pipefail off it must the last one).
$ set -o pipefail
$ false | true ; echo $?
1
$ set +o pipefail
$ false | true ; echo $?
0
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