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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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Why is it faster to check if dictionary contains the key, rather than catch the exception in case it
...e hand, throwing exceptions is inherently expensive, because the stack has to be unwound etc.
On the other hand, accessing a value in a dictionary by its key is cheap, because it's a fast, O(1) operation.
BTW: The correct way to do this is to use TryGetValue
obj item;
if(!dict.TryGetValue(name, ou...
Attempted to read or write protected memory. This is often an indication that other memory is corrup
I'm hoping someone can enlighten me as to what could possibly be causing this error:
26 Answers
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How to set cornerRadius for only top-left and top-right corner of a UIView?
Is there a way to set cornerRadius for only top-left and top-right corner of a UIView ?
25 Answers
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How to select between brackets (or quotes or …) in Vim?
I'm sure there used to be a plugin for this kinda stuff, but now that I need it, I can't seem to find it (naturally), so I'll just ask nice and simple.
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Random number generator only generating one random number
...ngle Random instance and keep using Next on the same instance.
//Function to get a random number
private static readonly Random random = new Random();
private static readonly object syncLock = new object();
public static int RandomNumber(int min, int max)
{
lock(syncLock) { // synchronize
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How do I view cookies in Internet Explorer 11 using Developer Tools
I'm looking for how to view the cookies set using developer tools in IE11. I see an option in network profiling to view cookies being sent back and forth, but this is not really the same thing. It is cumbersome to use since it's per request. Surely there must be a way to view all cookies like you ca...
What's the point of map in Haskell, when there is fmap?
...rywhere I've tried using map , fmap has worked as well. Why did the creators of Haskell feel the need for a map function? Couldn't it just be what is currently known as fmap and fmap could be removed from the language?
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Get exit code of a background process
...last background process that was executed. That will tell you what process to monitor, anyway.
4: wait <n> waits until the process with PID <n> is complete (it will block until the process completes, so you might not want to call this until you are sure the process is done), and then ret...
How to check type of variable in Java?
How can I check to make sure my variable is an int, array, double, etc...?
13 Answers
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