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What does $$ mean in the shell?

...his does produce a number that varies from time to time... but if you call it repeatedly, it returns the same number. (The solution is to just use the time.) ...
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Difference between framework vs Library vs IDE vs API vs SDK vs Toolkits? [closed]

I want some examples. I always get confused, so with some examples I might be able to figure it out better. 5 Answers ...
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Does C# have extension properties?

... For the moment it is still not supported out of the box by Roslyn compiler ... Until now, the extension properties were not seen as valuable enough to be included in the previous versions of C# standard. C# 7 and C# 8.0 have seen this as p...
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Best way to convert string to bytes in Python 3?

... If you look at the docs for bytes, it points you to bytearray: bytearray([source[, encoding[, errors]]]) Return a new array of bytes. The bytearray type is a mutable sequence of integers in the range 0 <= x < 256. It has most of the usual methods of mut...
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What is the difference between Cygwin and MinGW?

... As a simplification, it's like this: Compile something in Cygwin and you are compiling it for Cygwin. Compile something in MinGW and you are compiling it for Windows. About Cygwin The purpose of Cygwin is to make porting Unix-based applicati...
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Why is JavaScript called JavaScript, since it has nothing to do with Java? [closed]

Since JavaScript is not derived from Java, why does it have "Java" in the name? 10 Answers ...
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Git diff against a stash

... See the most recent stash: git stash show -p See an arbitrary stash: git stash show -p stash@{1} From the git stash manpages: By default, the command shows the diffstat, but it will accept any format known to git diff (e.g., git stash show -p...
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What are all the valid self-closing elements in XHTML (as implemented by the major browsers)?

...;</br> all should work just fine. If they don't, then you have HTML with inappropriately added XHTML DOCTYPE. DOCTYPE does not change how document is interpreted. Only MIME type does. W3C decision about ignoring DOCTYPE: The HTML WG has discussed this issue: the intention was to allow o...
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How can I check for NaN values?

float('nan') results in Nan (not a number). But how do I check for it? Should be very easy, but I cannot find it. 17 Answe...
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Best way to store time (hh:mm) in a database

...nore the other components of the date, but what's the best way to do this without storing more info than I actually need? 1...