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Repeat each row of data.frame the number of times specified in a column
What is the simplest way to expand each row the first two columns of the data.frame above, so that each row is repeated the number of times specified in the column 'freq'?
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Zipping streams using JDK8 with lambda (java.util.stream.Streams.zip)
In JDK 8 with lambda b93 there was a class java.util.stream.Streams.zip in b93 which could be used to zip streams (this is illustrated in the tutorial Exploring Java8 Lambdas. Part 1 by Dhananjay Nene ). This function :
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How to determine an interface{} value's “real” type?
I have not found a good resource for using interface{} types. For example
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Expression Versus Statement
I'm asking with regards to c#, but I assume its the same in most other languages.
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Disable Enable Trigger SQL server for a table
I want to create one proc like below but it has error on syntax.
Could anyone pointing out the problem?
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Git: Correct way to change Active Branch in a bare repository?
I have a bare repository that's used as the central store for my project. All the developers do git clone <repo> to share with it. When they do the clone, they get a checkout of the master branch (unless they do git clone -n ) because repo.git/HEAD contains ref: refs/heads/master , mak...
sphinx-build fail - autodoc can't import/find module
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Why have header files and .cpp files? [closed]
Why does C++ have header files and .cpp files?
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How do I convert a double into a string in C++?
I need to store a double as a string. I know I can use printf if I wanted to display it, but I just want to store it in a string variable so that I can store it in a map later (as the value , not the key ).
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Check whether a path is valid
...g for a way to validate if a given path is valid.
(Note: I do not want to check if a file is existing! I only want to proof the validity of the path - So if a file could possibly exists at the location) .
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