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How does BLAS get such extreme performance?
...e optimization. This boost significantly exceeds the second boost from parallelism and other hardware optimizations.
By the way, most (or even all) of the high performance BLAS implementations are NOT implemented in Fortran. ATLAS is implemented in C. GotoBLAS/OpenBLAS is implemented in C and i...
NoSql vs Relational database
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Not all data is relational. For those situations, NoSQL can be helpful.
With that said, NoSQL stands for "Not Only SQL". It's not intended to knock SQL or supplant it.
SQL has several very big advantages:
Strong mathemat...
Observer Design Pattern vs “Listeners”
It seems to me that the Observer design pattern as described in GOF is really the same thing as Listeners found in various toolkits. Is there a difference between the concepts, or are Listeners and Observers really the same thing.
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HTML img tag: title attribute vs. alt attribute?
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I'd go for both. Title will show a nice tooltip in all browsers and alt will give a description when browsing in a browser with no images.
That said, I'd love to see some stats of how many "surfers" out there going to a "store" to browse merchandise actually have images turn...
Difference between author and committer in Git?
...riginal poster asks:
What is the difference between the two (Committer vs author)?
The author is the person who originally wrote the code. The committer, on the other hand, is assumed to be the person who committed the code on behalf of the original author. This is important in Git because Git...
size_t vs. uintptr_t
...at size_t is a type that can hold any array index. This means that, logically, size_t should be able to hold any pointer type. I've read on some sites that I found on the Googles that this is legal and/or should always work:
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JUnit vs TestNG [closed]
...e been keeping an eye on TestNG for a while now. What experiences have you all had with either JUnit 4 or TestNG, and which seems to work better for very large numbers of tests? Having flexibility in writing tests is also important to us since our functional tests cover a wide aspect and need to be ...
AES vs Blowfish for file encryption
...was what became AES.
Interesting aside: at one point in the competition, all the entrants were asked to give their opinion of how the ciphers ranked. It's probably no surprise that each team picked its own entry as the best -- but every other team picked Rijndael as the second best.
That said, th...
Append text to input field
...ll when creating this example I somehow got a little confused. "ValueText" vs >Current NodeText< Isn't .val() supposed to run on the data of the value attribute? Anyway I and you me may clear up this sooner or later.
However the point for now is:
When working with form data use .val().
Whe...
Maven dependency for Servlet 3.0 API?
...JSTL 1.2, JSF 2.0, JTA 1.1, JSR-45, JSR-250.
But to my knowledge, nothing allows to say that these APIs won't be distributed separately (in java.net repository or somewhere else). For example (ok, it may a particular case), the JSF 2.0 API is available separately (in the java.net repository):
<...