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Why is the JVM stack-based and the Dalvik VM register-based?
...on an architecture with few registers (e.g. IA32).
In Dalvik VM Internals from Google I/O 2008, the Dalvik creator Dan Bornstein gives the following arguments for choosing a register-based VM on slide 35 of the presentation slides:
Register Machine
Why?
avoid instruction dispatch
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Where in an Eclipse workspace is the list of projects stored?
I use Eclipse with "external" projects - i.e. projects created from existing source.
6 Answers
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What is this: [Ljava.lang.Object;?
I get this when I call toString on an object I received from a function call. I know the type of the object is encoded in this string, but I don't know how to read it.
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How to avoid java.util.ConcurrentModificationException when iterating through and removing elements
...le of the second option, removing any strings with a length greater than 5 from a list:
List<String> list = new ArrayList<String>();
...
for (Iterator<String> iterator = list.iterator(); iterator.hasNext(); ) {
String value = iterator.next();
if (value.length() > 5) {
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Why should I prefer single 'await Task.WhenAll' over multiple awaits?
...erving the same SynchronizationContext, to further push its benefits aside from the semantics. I found no conclusive documentation, but looking at the IL there are evidently different implementations of IAsyncStateMachine in play. I don't read IL all that well, but WhenAll at the very least appears ...
How to create a fixed-size array of objects
...ngle value, it cannot be nil. (Also note that [SKSpriteNode?] is different from [SKSpriteNode]?... you want an array of optionals, not an optional array.)
Swift is very explicit by design about requiring that variables be initialized, because assumptions about the content of uninitialized reference...
Can Java 8 code be compiled to run on Java 7 JVM?
...tion is being done using invokeDynamic (which already exist in JDK 7). So, from the JVM instruction set standpoint, nothing should make the codebase incompatible. There are, though, a lot of API associated and compiler improvements that would could make the code from JDK 8 difficult to compile/run u...
What's the point of g++ -Wreorder?
... The order was man page-> SO answer. Here is an archive of the man page from 2007 that lists this example explicitly. The upvoted comment from Ben S is a hilarious example of someone suggesting that something exist without even checking that it does already. web.archive.org/web/20070712184121/htt...
Samples of Scala and Java code where Scala code looks simpler/has fewer lines?
... to not have accessors prefixed with get. Idiomatic Java code is different from idiomatic Scala code. Sometimes the is prefix used for booleans. davetron5000.github.com/scala-style/naming_conventions/methods/…
– Esko Luontola
Jun 1 '10 at 20:40
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Using mixins vs components for code reuse in Facebook React
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Update: this answer is outdated. Stay away from the mixins if you can.
I warned you!
Mixins Are Dead. Long Live Composition
At first, I tried to use subcomponents for this and extract FormWidget and InputWidget. However, I abandoned this approach halfway becau...