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Measuring elapsed time with the Time module
...age:
@profile
def your_function(...):
...
You can profile more then one function simultaneously. Then to print measurements just call the print_prof_data():
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How can I sharpen an image in OpenCV?
...
One general procedure is laid out in the Wikipedia article on unsharp masking:
You use a Gaussian smoothing filter and subtract the smoothed version from the original image (in a weighted way so the values of a constant area ...
MySQL select one column DISTINCT, with corresponding other columns
...lts every time you would execute the query. But i would be sure whether anyone should use undocumented features in production environment.
– Arunas Junevicius
Jun 3 '13 at 14:54
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Why is String immutable in Java?
...wo objects have same value (a="test", and b="test") and thus you need only one string object (for both a and b, these two will point to the same object).
Class loading: String is used as arguments for class loading. If mutable, it could result in wrong class being loaded (because mutable objects cha...
What is the difference between @Inject and @Autowired in Spring Framework? Which one to use under wh
I am going through some blogs on SpringSource and in one of the blogs, author is using @Inject and I suppose he can also use @Autowired .
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Which is more preferable to use: lambda functions or nested functions ('def')?
... a def, just to be more readable. If the function is more complex than the ones at operator module, a def is probably better.
So, real world good lambda use cases are very rare.
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Can code that is valid in both C and C++ produce different behavior when compiled in each language?
...of character ('a') in C/C++ for an explanation of the difference.
Another one from this article:
#include <stdio.h>
int sz = 80;
int main(void)
{
struct sz { char c; };
int val = sizeof(sz); // sizeof(int) in C,
// sizeof(struct sz) in C++
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What is the purpose of the reader monad?
...ur program, but from the time it gets compiled! So what do you do? Well, one option would be to use the Reader monad:
computePrice :: Reader CurrencyDict Dollars
computePrice
= do currencyDict <- ask
--insert computation here
Perhaps the most classic use-case is in implementing i...
Multiple Indexes vs Multi-Column Indexes
...ctices, Part 1
Indexes in SQL Server 2005/2008 – Part 2 – Internals
One thing to note, clustered indexes should have a unique key (an identity column I would recommend) as the first column.
Basically it helps your data insert at the end of the index and not cause lots of disk IO and Page spl...
What Java ORM do you prefer, and why? [closed]
...oo many to be managed efficiently and there are behaviors that could drive one crazy. On the other hand i have support for major databases and never have to worry about their differences.
– marcolopes
Mar 5 '11 at 13:03
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