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Please explain the exec() function and its family
...s the exec() function and its family? Why is this function used and how does its work?
7 Answers
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How to convert an Array to a Set in Java
...atchadourian This is not necessarily being done in parallel. Arrays.stream does not make any promises on the stream. You would have to call parallel() on the resulting stream for that.
– Felix S
Jan 20 '16 at 11:41
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Where can I find the Java SDK in Linux after installing it?
... but I don't know where my jdk folder is. I need to set the path for that. Does any one have a clue on the location?
13 Ans...
Where can I learn how to write C code to speed up slow R functions? [closed]
... C. One major one would seem to be that C++ is much more complex that C - does this make it harder to use? (Or in practice, can you write C++ code that's very similar to C?) I would also appreciate more reference material that's aimed at new users who are not familiar with the existing C api.
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What is referential transparency?
What does the term referential transparency mean? I've heard it described as "it means you can replace equals with equals" but this seems like an inadequate explanation.
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What's “P=NP?”, and why is it such a famous question? [closed]
...f whether P=NP is perhaps the most famous in all of Computer Science. What does it mean? And why is it so interesting?
6 An...
Sqlite: CURRENT_TIMESTAMP is in GMT, not the timezone of the machine
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This does have the problem of not being transferable across timezones however, no?
– Vadim Peretokin
Sep 9 '13 at 7:40
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Is C++ context-free or context-sensitive?
...e computation could be performed by a linear-bounded Turing machine, so it does not quite prove Turing equivalence, but the important part is that the parser needs to perform the computation in order to perform syntactic analysis. It could have been any computation expressible as a template instanti...
Auto-loading lib files in Rails 4
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Rails 3 Autoload Modules/Classes by Bill Harding.
And to understand what does Rails exactly do about auto-loading?
read Rails autoloading — how it works, and when it doesn't by Simon Coffey.
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RegEx for matching UK Postcodes
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I can't get this to work in JavaScript. Does it only work with certain regex engines?
– NickG
Mar 27 '14 at 9:57
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