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Why is my program slow when looping over exactly 8192 elements?
...for(i=1;i<SIZE-1;i++)
for(j=1;j<SIZE-1;j++) {
res[j][i]=0;
for(k=-1;k<2;k++)
for(l=-1;l<2;l++)
res[j][i] += img[j+l][i+k];
res[j][i] /= 9;
}
First notice that the two inner loops are trivial. They can be unrolled as follows:
f...
How to multiply duration by integer?
...
+250
int32 and time.Duration are different types. You need to convert the int32 to a time.Duration, such as time.Sleep(time.Duration(rand.I...
Sticky sidebar: stick to bottom when scrolling down, top when scrolling up
... */
$(function() {
$(".sidebar").stick_in_parent({
offset_top: 10
});
});
* {
font-size: 10px;
color: #333;
box-sizing: border-box;
}
.wrapper,
.header,
.main,
.footer {
padding: 10px;
position: relative;
}
.wrapper {
border: 1px solid #333;
background-col...
Redis command to get all available keys?
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answered Mar 9 '11 at 21:40
yojimbo87yojimbo87
57.1k2121 gold badges118118 silver badges128128 bronze badges
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A migration to add unique constraint to a combination of columns
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answered Jul 30 '10 at 9:45
Robert SpeicherRobert Speicher
14.5k55 gold badges3636 silver badges4343 bronze badges
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Why does casting int to invalid enum value NOT throw exception?
...e.IsDefined(),
() => new ArgumentException(string.Format("{0} is not a defined value for enum type {1}",
enumValue, typeof(T).FullName)));
return parsedValue;
}
public static bool IsDefined(T enumValue)
{
return System.Enum.IsDefined(type...
How to highlight text using javascript
...
102
You can use the jquery highlight effect.
But if you are interested in raw javascript code, tak...
Generic Repository With EF 4.1 what is the point
...
202
You are actually right. DbContext is an implementation of the unit of work pattern and IDbSet i...
python list by value not by reference [duplicate]
...
220
As answered in the official Python FAQ:
b = a[:]
...
Why does 1==1==1 return true, “1”==“1”==“1” return true, and “a...
... |
edited May 9 '14 at 10:53
answered May 9 '14 at 9:54
J...