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Go > operators
Could someone please explain to me the usage of << and >> in Go? I guess it is similar to some other languages.
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How to enable PHP's openssl extension to install Composer?
...n WAMP setup. I am getting a warning message for not enabling openssl which I had already done in WAMP.
18 Answers
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Replacing NAs with latest non-NA value
... a data.frame (or data.table), I would like to "fill forward" NAs with the closest previous non-NA value. A simple example, using vectors (instead of a data.frame ) is the following:
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How do I rename an open file in Emacs?
Is there a way to rename an open file in Emacs? While I'm viewing it? Something like save-as, but the original one should go away.
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Using 'return' in a Ruby block
I'm trying to use Ruby 1.9.1 for an embedded scripting language, so that "end-user" code gets written in a Ruby block. One issue with this is that I'd like the users to be able to use the 'return' keyword in the blocks, so they don't need to worry about implicit return values. With this in mind, t...
Initializing IEnumerable In C#
I have this object :
8 Answers
8
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Find column whose name contains a specific string
I have a dataframe with column names, and I want to find the one that contains a certain string, but does not exactly match it. I'm searching for 'spike' in column names like 'spike-2' , 'hey spike' , 'spiked-in' (the 'spike' part is always continuous).
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MIN and MAX in C
Where are MIN and MAX defined in C, if at all?
14 Answers
14
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How do I tokenize a string in C++?
Java has a convenient split method:
35 Answers
35
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How do I use arrays in C++?
C++ inherited arrays from C where they are used virtually everywhere. C++ provides abstractions that are easier to use and less error-prone ( std::vector<T> since C++98 and std::array<T, n> since C++11 ), so the need for arrays does not arise quite as often as it does in C. However, ...