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Lock, mutex, semaphore… what's the difference?
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A lock allows only one thread to enter the part that's locked and the lock is not shared with any other processes.
A mutex is the same as a lock but it can be system wide (shared by multiple processes).
A semaphore does the same as a mutex but allows x number of threads to enter, this...
Match multiple cases classes in scala
I'm doing matching against some case classes and would like to handle two of the cases in the same way. Something like this:
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Running a cron job on Linux every six hours
How can I run command every six hours every day?
7 Answers
7
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how does Array.prototype.slice.call() work?
I know it is used to make arguments a real array, but I don't understand what happens when using Array.prototype.slice.call(arguments)
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Remove all special characters from a string [duplicate]
...with URLs, I want to be able to convert titles that could contain anything and have them stripped of all special characters so they only have letters and numbers and of course I would like to replace spaces with hyphens.
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What is the difference between include and extend in Ruby?
...correct. However there is more to it than that.
If you have a class Klazz and module Mod, including Mod in Klazz gives instances of Klazz access to Mod's methods. Or you can extend Klazz with Mod giving the class Klazz access to Mod's methods. But also you can extend an arbitrary object with o.exte...
how to File.listFiles in alphabetical order?
...irst. If you are using case-insensitive filenames on Windows, the capitals and lowercase names will be mixed together. This is completely as expected. If you want the Windows way on a Unix, supply a comparator to sort.
– Ray Toal
Oct 29 '14 at 4:21
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Best way to implement request throttling in ASP.NET MVC?
...t;remarks>
/// We'll be inserting a Cache record based on this name and client IP, e.g. "Name-192.168.0.1"
/// </remarks>
public string Name { get; set; }
/// <summary>
/// The number of seconds clients must wait before executing this decorated route again.
//...
what does the __file__ variable mean/do?
...But there is a reason for these statements that determine path at runtime, and I would really like to understand the os.path module so that I can start using it.
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How do I get rid of this unwanted bar from Eclipse?
...ar right. It looks like a little C with a green circle, a black triangle, and some small blue thing in the back. Find that button on your eclipse toolbar and click it to show/hide breadcrumbs.
If you don't see it, let me know, and I can try to figure out which toolbar it is a part of.
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