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Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
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Stephen CanonStephen Canon
94.7k1818 gold badges164164 silver badges253253 bronze badges
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What is a unix command for deleting the first N characters of a line?
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Use cut. Eg. to strip the first 4 characters of each line (i.e. start on the 5th char):
tail -f logfile | grep org.springframework | cut -c 5-
share
|
im...
How do I prompt for Yes/No/Cancel input in a Linux shell script?
...-- $(locale LC_MESSAGES)
yesptrn="$1"; noptrn="$2"; yesword="$3"; noword="$4"
while true; do
read -p "Install (${yesword} / ${noword})? " yn
case $yn in
${yesptrn##^} ) make install; break;;
${noptrn##^} ) exit;;
* ) echo "Answer ${yesword} / ${noword}.";;
esac
d...
Interactive search/replace regex in Vim?
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471
Add the flag c (in the vim command prompt):
:%s/old/new/gc
will give you a yes/no prompt at...
Is there a foreach in MATLAB? If so, how does it behave if the underlying data changes?
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147
MATLAB's FOR loop is static in nature; you cannot modify the loop variable between iterations, ...
Big-O for Eight Year Olds? [duplicate]
I'm asking more about what this means to my code. I understand the concepts mathematically, I just have a hard time wrapping my head around what they mean conceptually. For example, if one were to perform an O(1) operation on a data structure, I understand that the number of operations it has to p...
How to split a long regular expression into multiple lines in JavaScript?
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edited Jul 28 '18 at 9:44
answered Sep 7 '12 at 11:20
Ko...
Expand a random range from 1–5 to 1–7
...ough 5 inclusive.
int rand7()
{
int vals[5][5] = {
{ 1, 2, 3, 4, 5 },
{ 6, 7, 1, 2, 3 },
{ 4, 5, 6, 7, 1 },
{ 2, 3, 4, 5, 6 },
{ 7, 0, 0, 0, 0 }
};
int result = 0;
while (result == 0)
{
int i = rand5();
int j = rand5();
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Is it possible to have multiple styles inside a TextView?
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edited May 23 '17 at 11:47
Community♦
111 silver badge
answered Oct 7 '09 at 18:58
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Smart way to truncate long strings
...ull;
body {
font: normal 12px/15px verdana, arial;
}
p {
width: 450px;
}
#resultTruncatedPlain:before {
content: 'Truncated (plain) n='attr(data-truncateat)': ';
color: green;
}
#resultTruncatedBoundary:before {
content: 'Truncated (last whole word) n='attr(data-truncatea...