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What is the advantage of using forwarding references in range-based for loops?
...or<bool> v(10);
for (auto& e : v)
e = true;
}
This doesn't compile because rvalue vector<bool>::reference returned from the iterator won't bind to a non-const lvalue reference. But this will work:
#include <vector>
int main()
{
std::vector<bool> v(10)...
What is the best way to remove a table row with jQuery?
...:
<tr id="myTableRow"><td>blah</td></tr>
If you don't have an id, you can use any of jQuery's plethora of selectors.
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Method chaining - why is it a good practice, or not?
...general practice in my code.
The point is - in 99% cases you can probably do just as well or even better without method chaining. But there is the 1% where this is the best approach.
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Under what circumstances are linked lists useful?
...n easily be avoided.
Just wrap items you add in freshly created nodes and do not reuse those nodes - let the GC do its work.
The page on the ABA problem also provides the implementation of a lock-free stack - that actually works in .Net (&Java) with a (GC-ed) Node holding the items.)
Edit:
@Ne...
Limiting the number of records from mysqldump?
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What does the "1" before limit do?
– Phob
Jul 14 '11 at 23:29
31
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When should I use a NoSQL database instead of a relational database? Is it okay to use both on the s
...n and suitable for 99% of the real world applications. You can practically do anything with relational databases.
But, there are limitations on speed and scaling when it comes to massive high availability data stores. For example, Google and Amazon have terabytes of data stored in big data centers....
Java - get pixel array from image
...el (x, y) from the image using int[x][y] . All the methods I have found do not do this (most of them return int[] s).
7...
How to normalize a NumPy array to within a certain range?
After doing some processing on an audio or image array, it needs to be normalized within a range before it can be written back to a file. This can be done like so:
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How do I create test and train samples from one dataframe with pandas?
...and I was wondering how I would be able to split the dataframe into two random samples (80% and 20%) for training and testing.
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Accessing @attribute from SimpleXML
... object (the nested tags), I get the correct output, but when I follow the docs and var_dump $xml->OFFICE->{'@attributes'} , I get an empty object, despite the fact that the first var_dump clearly shows that there are attributes to output.
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