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Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
...ill somewhat faster than sqrtss.
edit: If speed is critical, and you're really calling this in a loop for many values, you should be using the vectorized versions of these instructions, rsqrtps or sqrtps, both of which process four floats per instruction.
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Storing R.drawable IDs in XML array
...encoding="utf-8"?>
<resources>
<integer-array name="random_imgs">
<item>@drawable/car_01</item>
<item>@drawable/balloon_random_02</item>
<item>@drawable/dog_03</item>
</integer-array>
</resources>
Then...
Set selected option of select box
... code into a $(document).ready:
$(function() {
$("#gate").val('gateway_2');
});
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Initialize a nested struct
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@GauravOjha not all the way, but something like play.golang.org/p/n24BD3NlIR
– OneOfOne
Jan 30 '17 at 15:07
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How to replace all occurrences of a character in string?
What is the effective way to replace all occurrences of a character with another character in std::string ?
15 Answers
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Get record counts for all tables in MySQL database
Is there a way to get the count of rows in all tables in a MySQL database without running a SELECT count() on each table?
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Check whether or not the current thread is the main thread
...be executed on the main thread, you can:
- (void)someMethod
{
dispatch_block_t block = ^{
// Code for the method goes here
};
if ([NSThread isMainThread])
{
block();
}
else
{
dispatch_async(dispatch_get_main_queue(), block);
}
}
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How can I change the default Django date template format?
...
date template tag
settings.DATE_FORMAT
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Recursively add files by pattern
...t doesn't provide any fancy mechanisms for doing this itself, as it's basically a shell problem: how do you get a list of files to provide as arguments to a given command.
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Bootstrap 3 offset on right not left
...nswered Dec 12 '13 at 6:43
Ross AllenRoss Allen
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