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How can you diff two pipelines in Bash?
...names like /dev/fd/63 to get a filename that the command can open and read from to actually read from an already-open file descriptor that bash set up before exec'ing the command. (i.e. bash uses pipe(2) before fork, and then dup2 to redirect from the output of quux to an input file descriptor for ...
How to count the frequency of the elements in an unordered list?
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Note: You should sort the list before using groupby.
You can use groupby from itertools package if the list is an ordered list.
a = [1,1,1,1,2,2,2,2,3,3,4,5,5]
from itertools import groupby
[len(list(group)) for key, group in groupby(a)]
Output:
[4, 4, 2, 1, 2]
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Relatively position an element without it taking up space in document flow
... absolute; left: 100px; top: 100px">
Hi there, I'm 100px offset from where I ought to be, from the top and left.
</div>
</div>
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How to get Maven project version to the bash command line
Previous I issued a question on how to change Maven project vesion from command line which lead me to a new issue.
28 Ans...
Docker - a way to give access to a host USB or serial device?
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Using this solution I don't see devices from a docker container... Here are details stackoverflow.com/questions/37213812 of my problem. Appreciate of any help! Thanks.
– kashesandr
May 19 '16 at 20:36
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How to make a class conform to a protocol in Swift?
...nform to protocol 'NSObjectProtocol'
You have to make your class inherit from NSObject to conform to the NSObjectProtocol. Vanilla Swift classes do not. But many parts of UIKit expect NSObjects.
class CustomDataSource : NSObject, UITableViewDataSource {
}
But this:
Type 'CellDatasDataSourc...
How good is Java's UUID.randomUUID?
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@osa: Not producing collisions (more than to be expected from perfect randomness) is pretty much the lowest quality requirement for a RNG, while cryptographic strength is the highest. In other words, a cryptographically strong RNG will most definitely not produce more collisions th...
How to attach file to a github issue?
I migrated with a project from Bitbucket to Github and I can not find a way to attach a file to an issue (ex: screenshot, specs, etc)
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What is data oriented design?
...icle , and this guy goes on talking about how everyone can greatly benefit from mixing in data oriented design with OOP. He doesn't show any code samples, however.
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How do I unset an element in an array in javascript?
How do I remove the key 'bar' from an array foo so that 'bar' won't show up in
6 Answers
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