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Sample random rows in dataframe
I am struggling to find the appropriate function that would return a specified number of rows picked up randomly without replacement from a data frame in R language? Can anyone help me out?
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How to validate an OAuth 2.0 access token for a resource server?
When a client asks a resource server to get a protected resource with an OAuth 2.0 access token, how does this server validate the token? The OAuth 2.0 refresh token protocol?
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How to pass an object into a state using UI-router?
I'd like to be able to transition to a state and a pass an arbitrary object using ui-router.
6 Answers
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What should main() return in C and C++?
What is the correct (most efficient) way to define the main() function in C and C++ — int main() or void main() — and why? And how about the arguments?
If int main() then return 1 or return 0 ?
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Find all files with name containing string
I have been searching for a command that will return files from the current directory which contain a string in the filename. I have seen locate and find commands that can find files beginning with something first_word* or ending with something *.jpg .
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How to keep index when using pandas merge
...ever, when I do the merge, the resulting DataFrame has integer index. How can I specify that I want to keep the index from the left data frame?
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Get Folder Size from Windows Command Line
Is it possible in Windows to get a folder's size from the command line without using any 3rd party tool?
17 Answers
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How can one print a size_t variable portably using the printf family?
... of type size_t , and I want to print it using printf() . What format specifier do I use to print it portably?
12 Answer...
map function for objects (instead of arrays)
I have an object:
38 Answers
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SQL query return data from multiple tables
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