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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 is attr_accessible used in Rails 4?
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Rails 4 now uses strong parameters.
Protecting attributes is now done in the controller. This is an example:
class PeopleController < ApplicationController
def create
Person.create(person_params)
end
private
def person_params
para...
Why should I use Restify?
I had the requirement to build up a REST API in node.js and was looking for a more light-weight framework than express.js which probably avoids the unwanted features and would act like a custom-built framework for building REST APIs. Restify from its intro is recommended for the same case.
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How to measure time taken by a function to execute
I need to get execution time in milliseconds.
28 Answers
28
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Get exit code of a background process
... how close it is to finishing. (ps | grep isn't idiot-proof. If you have time you can come up with a more robust way to tell whether the process is still running).
Here's a skeleton script:
# simulate a long process that will have an identifiable exit code
(sleep 15 ; /bin/false) &
my_pid=$!
wh...
Returning a boolean from a Bash function
...hen echo "is directory"; else echo "nopes"; fi
Edit
From @amichair's comment, these are also possible
isdirectory() {
if [ -d "$1" ]
then
true
else
false
fi
}
isdirectory() {
[ -d "$1" ]
}
share
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Is there a way to iterate over a range of integers?
...ut I was wondering if there is a way to iterate over a range of numbers, something like this:
11 Answers
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How to extract epoch from LocalDate and LocalDateTime?
How do I extract the epoch value to Long from instances of LocalDateTime or LocalDate ? I've tried
the following, but it gives me other results:
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What is the proper way to re-throw an exception in C#? [duplicate]
... the trace resulting from "throw ex", you'll see that it ends on that statement and not at the real source of the exception.
Basically, it should be deemed a criminal offense to use "throw ex".
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Disable Interpolation when Scaling a
NOTE : This has to do with how existing canvas elements are rendered when scaled up , not to do with how lines or graphics are rendered onto a canvas surface . In other words, this has everything to do with interpolation of scaled elements , and nothing to do with antialiasing of graphics b...