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Differences between Perl and PHP [closed]
...onsider Perl 5, since Perl 6 is still under development. Some differences, grouped roughly by subject:
Perl has native regular expression support, including regexp literals. PHP uses Perl's regexp functions as an extension.
Perl has quite a few more operators, including matching (=~, !~), quote-li...
What does “abstract over” mean?
...
In algebra, as in everyday concept formation, abstractions are formed by grouping things by some essential characteristics and omitting their specific other characteristics. The abstraction is unified under a single symbol or word denoting the similarities. We say that we abstract over the differe...
How do I use reflection to call a generic method?
... name of a method, i.e. "ToString" or "GenericMethod" actually refers to a group of methods that may contain one or more methods. Until you provide the types of the method parameters, it is not known which
method you are referring to.
((Action)GenericMethod<object>) refers to the delegate fo...
How can I pair socks from a pile efficiently?
...t sorting is a little too much: We don't need order; we just need equality groups.
So hashing would be enough (and faster).
For each color of socks, form a pile. Iterate over all socks in your input basket and distribute them onto the color piles.
Iterate over each pile and distribute it by some ...
What are good examples of genetic algorithms/genetic programming solutions? [closed]
...
I work in a research group where this sort of thing (ALife) was what people did everyday. Your story is totally believable, and to be honest I was a little shocked to see that anyone would think it is a fake. Then again, usually the point of doin...
Why does pthread_cond_wait have spurious wakeups?
...bly correct academic contingent among the "core threadies" in
the working group, though I don't think anyone really disagreed with the intent
once they understood what it meant.
We followed that intent with several levels of justification. The first was that
"religiously" using a loop protects ...
Comparison of Android networking libraries: OkHTTP, Retrofit, and Volley [closed]
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RoboSpice Vs. Volley
From https://groups.google.com/forum/#!topic/robospice/QwVCfY_glOQ
RoboSpice(RS) is service based and more respectful of Android philosophy than Volley. Volley is thread based and this is not the way background processing should take pl...
Lock, mutex, semaphore… what's the difference?
...ave different properties (namely regarding ownership). See for example barrgroup.com/Embedded-Systems/How-To/RTOS-Mutex-Semaphore for details
– nanoquack
Apr 28 '14 at 5:34
3
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Why are joins bad when considering scalability?
...ou can think of this as generic denormalization)
Replication, Availability Groups, Log shipping, or other mechanisms to let multiple servers answer read queries for the same database, and thus scale your workload out among several servers.
Use of a caching layer like Redis to avoid re-running querie...
Custom HTTP headers : naming conventions
...ion here is whether there are conventions for (B). There are. They involve grouping the parameters together alphabetically, and separating them from the many standards-relevant headers of type (A). Using the "X-" or "X-ACME-" prefix is convenient and legitimate for (B), and does not conflict with (A...