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How does the C# compiler detect COM types?
... [ComImport]
public interface IFoo
{
}
static void Main(string[] args)
{
IFoo foo = new IFoo();
}
}
You need both the ComImportAttribute and the GuidAttribute for it to work.
Also note the information when you hover the mouse over the new IFoo(): Intellisense pr...
Count the items from a IEnumerable without iterating?
...
Just adding extra some info:
The Count() extension doesn't always iterate. Consider Linq to Sql, where the count goes to the database, but instead of bringing back all the rows, it issues the Sql Count() command and returns that result ...
Keep file in a Git repo, but don't track changes
...ne a path that is marked as assume-unchanged has changed without incurring extra lstat(2) cost, it reserves the right to report that the path has been modified (as a result, "git commit -a" is free to commit that change)." In other words, assume-unchanged is just for local performance issues. If Git...
How to add leading zeros for for-loop in shell? [duplicate]
...
Try giving seq a format string. seq -f '%02g' 1 5
– blarf
Oct 6 '16 at 20:40
...
How to “grep” for a filename instead of the contents of a file?
... can play with grep as per your requirement.
Note : As the grep is generic string classification, It can result in giving you not only file names. but if a path has a directory ('/xyz_test_123/other.txt') would also comes to the result set.
cheers
...
How to generate a random number in C++?
...in a random generator in this way:
#include <iostream>
#include <string>
// Used in randomization
#include <ctime>
#include <boost/random/mersenne_twister.hpp>
#include <boost/random/uniform_int_distribution.hpp>
#include <boost/random/variate_generator.hpp>
us...
Remove non-ascii character in string
and i need to remove all non-ascii character from string,
5 Answers
5
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Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?
...ix do not fit, then you will loose time swapping in elements from RAM. The extra 4095 elements may just be enough to prevent rows from fitting.
In your case, 2 rows for 2047 2d matrices fall within 16KB of memory (assuming 32 bit types). For example, if you have an L1 cache (closest to the cpu on t...
Padding between ActionBar's home icon and title
... Interesting solution but does not work for me - i can either add extra padding this way or crop the logo image - no good (4.3)
– Dori
Oct 11 '13 at 12:26
1
...
What happens to a detached thread when main() exits?
...
Consider the following code:
#include <iostream>
#include <string>
#include <thread>
#include <chrono>
void thread_fn() {
std::this_thread::sleep_for (std::chrono::seconds(1));
std::cout << "Inside thread function\n";
}
int main()
{
std::thread t1(t...