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How good is Java's UUID.randomUUID?
...UID uses java.security.SecureRandom, which is supposed to be "cryptographically strong". While the actual implementation is not specified and can vary between JVMs (meaning that any concrete statements made are valid only for one specific JVM), it does mandate that the output must pass a statistical...
Missing file warnings showing up after upgrade to Xcode 4
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I additionally had to quit and kill xcode for the problem to go away.
– Twilite
Apr 3 '12 at 16:31
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Why can I add named properties to an array as if it were an object?
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Virtually everything in javascript is an object, so you can "abuse" an Array object by setting arbitrary properties on it. This should be considered harmful though. Arrays are for numerically indexed data - for non-numeric keys, u...
What is the difference between Tomcat, JBoss and Glassfish?
... and CORBA. We didn't include these in the Java EE version of Tomcat, but all current technology is there like JAX-RS, JAX-WS, JMS, CDI, JPA, JSF, EJB, JTA, etc.
– David Blevins
Aug 26 '13 at 21:01
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Hiding the scroll bar on an HTML page
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Actually, this is not completely the right answer : overflow:hidden doesn't "hide" the scrollbar. It also stop scrolling feature on the page. That's not exactly what we ask for.
– adriendenat
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What algorithm gives suggestions in a spell checker?
What algorithm is typically used when implementing a spell checker that is accompanied with word suggestions?
5 Answers
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When to use Vanilla JavaScript vs. jQuery?
... there are certain practices using javascript, instead of jQuery, that actually enable you to write less and do ... well the same amount. And may also yield performance benefits.
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Non-Relational Database Design [closed]
...oldemort,
etc)
Document databases (CouchDB,
MongoDB, etc)
Graph databases (AllegroGraph,
Neo4j, Sesame, etc)
I'm mostly into graph databases, and the elegance of data design using this paradigm was what brought me there, tired of the shortcomings of RDBMS. I have put a few examples of data design ...
Choosing Java vs Python on Google App Engine
...s mature. However, Java seems to have a longer list of libraries and especially support for Java bytecode regardless of the languages used to write that code. Which language will give better performance and more power? Please advise. Thank you!
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Java HashMap performance optimization / alternative
...={99,100}) will hash to the same value as (a[]={3,1,2}, b[]={100,99}). Actually all keys k1 and k2 where sum(k1.a)==sum(k2.a) and sum(k1.b)=sum(k2.b) will result in collisions. I suggest assigning a weight to each position of the array:
hash = hash * 5381 + (c0*a[0] + c1*a[1]);
hash = hash * 5381 +...