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Difference between / and /* in servlet mapping url pattern
...h for the context root (http://host:port/context/).
See Chapter 12 of the Java Servlet Specification, available in version 3.1 at http://download.oracle.com/otndocs/jcp/servlet-3_1-fr-eval-spec/index.html.
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Why must we define both == and != in C#?
...ww.ecma-international.org/publications/files/ECMA-ST/Ecma-334.pdf)
3. And Java, but that's really not the point here
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Why does Date.parse give incorrect results?
...slightly incorrect) ISO-8601 (also see What are valid Date Time Strings in JavaScript?). But other than that, there was no requirement for what Date.parse / new Date(string) should accept other than that they had to accept whatever Date#toString output (without saying what that was).
As of ECMAScri...
std::string formatting like sprintf
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For some reason, other languages use printf-like syntax: Java, Python (the new syntax is still closer to printf than to streams). Only C++ inflicts this verbose abomination on innocent human beings.
– quant_dev
Apr 5 '15 at 0:29
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What do all of Scala's symbolic operators mean?
...s three automatic imports:
// Not necessarily in this order
import _root_.java.lang._ // _root_ denotes an absolute path
import _root_.scala._
import _root_.scala.Predef._
The first two only make classes and singleton objects available. The third one contains all implicit conversions and imp...
Checking images for similarity with OpenCV
...to the otherwise same view) you can also work with absdiff codota.com/code/java/methods/org.opencv.core.Core/absdiff Thresholding the result produces a mask that allows you to highlight the regions that changed from scene to scene.
– Max F.
Mar 20 at 17:01
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What are the differences between Abstract Factory and Factory design patterns?
...famous third example is Josh Bloch's Static Factory Pattern from Effective Java. The Head First Design Patterns book includes yet another pattern they call Simple Factory.
Don't fall into the trap of assuming every Factory pattern must match one from the GoF.
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C# vs C - Big performance difference
...That's what pre-jitting with ngen.exe solves. We're talking about C#, not Java.
– Hans Passant
Mar 17 '12 at 14:21
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What are the best practices for JavaScript error handling?
I'm looking to start making my JavaScript a bit more error proof, and I'm finding plenty of documentation on using try , catch , finally , and throw , but I'm not finding a ton of advice from experts on when and where to throw errors.
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R and version control for the solo data analyst
...net to catch mistakes can be a great thing to have.
I've worked as a solo Java developer, and I still use source control. If I'm checking things in continuously I can't lose more than an hour's work if something goes wrong. I can experiment and refactor without worrying, because if it goes awry I...