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Do any JVM's JIT compilers generate code that uses vectorized floating point instructions?
Let's say the bottleneck of my Java program really is some tight loops to compute a bunch of vector dot products. Yes I've profiled, yes it's the bottleneck, yes it's significant, yes that's just how the algorithm is, yes I've run Proguard to optimize the byte code, etc.
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How can I escape a double quote inside double quotes?
How can I escape double quotes inside a double string in Bash?
8 Answers
8
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Does anyone still use [goto] in C# and if so why? [closed]
...ng whether anyone still uses the "goto" keyword syntax in C# and what possible reasons there are for doing so.
8 Answers
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How to return a result (startActivityForResult) from a TabHost Activity?
... look at the Activity class, you will see, that finish() method only sends back the result if there is a mParent property set to null. Otherwise the result is lost.
public void finish() {
if (mParent == null) {
int resultCode;
Intent resultData;
synchronized (this) {
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What does .SD stand for in data.table in R
.SD looks useful but I do not really know what I am doing with it. What does it stand for? Why is there a preceding period (full stop). What is happening when I use it?
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Better explanation of when to use Imports/Depends
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"Imports" is safer than "Depends" (and also makes a package using it a 'better citizen' with respect to other packages that do use "Depends").
A "Depends" directive attempts to ensure that a function from another package is available by attaching the other package to the main search path (i.e. t...
Can I catch multiple Java exceptions in the same catch clause?
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This has been possible since Java 7. The syntax for a multi-catch block is:
try {
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} catch (IOException | SQLException ex) {
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}
Remember, though, that if all the exceptions belong to the same class hierarchy, you can si...
Rotating a point about another point (2D)
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First subtract the pivot point (cx,cy), then rotate it, then add the point again.
Untested:
POINT rotate_point(float cx,float cy,float angle,POINT p)
{
float s = sin(angle);
float c = cos(angle);
// translate point back to o...
Hashing a dictionary?
...ring or representation of the dictionary.
UPDATE: Please see the comments below, why this approach might not produce a stable result.
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Arrow operator (->) usage in C
I am reading a book called "Teach Yourself C in 21 Days" (I have already learned Java and C# so I am moving at a much faster pace). I was reading the chapter on pointers and the -> (arrow) operator came up without explanation. I think that it is used to call members and functions (like the eq...