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Do any JVM's JIT compilers generate code that uses vectorized floating point instructions?
...tBuffer bb = bc().capacity(50).asBuffer();
for (int i = 0; i < 10000000; i++) {
a[i%50] = b[i%50] = dot();
float sum = dotc();
ab.put(i%50, sum);
bb.put(i%50, sum);
}
long t1 = System.nanoTime();
for (int i = 0; i &l...
What specifically are wall-clock-time, user-cpu-time, and system-cpu-time in UNIX?
I can take a guess based on the names, but what specifically are wall-clock-time, user-cpu-time, and system-cpu-time in UNIX?
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Different floating point result with optimization enabled - compiler bug?
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Intel x86 processors use 80-bit extended precision internally, whereas double is normally 64-bit wide. Different optimization levels affect how often floating point values from CPU get saved into memory and thus rounded from 80-bit precision to 64-bit precision.
Use the -ffloat-st...
Automating “enter” keypresses for bash script generating ssh keys
... is shorter, and should ssh-keygen ever add a question, that will automatically be answered in too. :)
– zrajm
Apr 24 '15 at 11:08
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Best way for a 'forgot password' implementation? [closed]
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this is essentially the described way of properly resetting a password crackstation.net/hashing-security.htm#faq
– TruthOf42
Nov 22 '13 at 13:30
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Getting raw SQL query string from PDO prepared statements
Is there a way to get the raw SQL string executed when calling PDOStatement::execute() on a prepared statement? For debugging purposes this would be extremely useful.
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Git: “Not currently on any branch.” Is there an easy way to get back on a branch, while keeping the
...
araqnidaraqnid
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Iterate through object properties
... check:
for (var prop in obj) {
if (Object.prototype.hasOwnProperty.call(obj, prop)) {
// do stuff
}
}
It's necessary because an object's prototype contains additional properties for the object which are technically part of the object. These additional properties are inherited fr...
Best practices for catching and re-throwing .NET exceptions
... that bombs here
} catch (Exception ex)
{
throw;
}
throw ex; is basically like throwing an exception from that point, so the stack trace would only go to where you are issuing the throw ex; statement.
Mike is also correct, assuming the exception allows you to pass an exception (which is recom...
Why do I want to avoid non-default constructors in fragments?
...ragment access data:
Type value = getArguments().getType("key");
That's all.
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