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What does the “Just” syntax mean in Haskell?
I have scoured the internet for an actual explanation of what this keyword does. Every Haskell tutorial that I have looked at just starts using it randomly and never explains what it does (and I've looked at many).
...
Why do people use Heroku when AWS is present? What distinguishes Heroku from AWS? [closed]
...because of progress. There is zero value in the IT knob-turning of scaling internet infrastructures which isn't increasingly automatable, and none of it has anything to do with the value of the product or service you are offering.
Also, keep in mind with a commercial website - scalability is what w...
HTML: Include, or exclude, optional closing tags?
...plications 1.0,” which included major new features like a direct-mode drawing canvas and native support for audio and video without plugins.
In October 2009, the W3C shut down the XHTML 2 Working Group and issued this statement to explain their decision:
When W3C announced the HTM...
Why JavaScript rather than a standard browser virtual machine?
...use of bad timing and technical stupidities which are mostly resolved. Allowing any language between the script tag (with restrictions) would be pretty cool, and certainly not impossible nor unpractical.
– Gerbrand
Dec 18 '10 at 13:55
...
How can I access the MySQL command line with XAMPP for Windows?
How can I access the MySQL command line with XAMPP for Windows?
15 Answers
15
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How to UPSERT (MERGE, INSERT … ON DUPLICATE UPDATE) in PostgreSQL?
... preferred whenever practical.
In this case, you typically follow the following process:
CREATE a TEMPORARY table
COPY or bulk-insert the new data into the temp table
LOCK the target table IN EXCLUSIVE MODE. This permits other transactions to SELECT, but not make any changes to the table.
Do an ...
What's the difference between EscapeUriString and EscapeDataString?
... Exactly right. EscapeUriString (like EscapeUrl's default behavior in Win32) was created by someone who didn't understand URIs or escaping. It's a misguided attempt to create something that takes a malformed URI and sometimes turn it into the intended version. But it doesn't have the informatio...
Embedding unmanaged dll into a managed C# dll
... if (h == IntPtr.Zero)
{
Exception e = new Win32Exception();
throw new DllNotFoundException("Unable to load library: " + dllName + " from " + tempFolder, e);
}
}
}
}
...
How does BLAS get such extreme performance?
...t all).
IMHO no BLAS implementation uses algorithms like the Coppersmith–Winograd algorithm or the Strassen algorithm. The likely reasons are:
Maybe its not possible to provide a cache optimized implementation of these algorithms (i.e. you would loose more then you would win)
These algorithms a...
Dictionary vs Object - which is more efficient and why?
...ots=3sec obj=11sec dict=12sec namedtuple=16sec. I'm using CPython 2.6.6 on Win7 64bit
– Jonathan
Jul 5 '11 at 13:24
To...