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How much is the overhead of smart pointers compared to normal pointers in C++?
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std::unique_ptr has memory overhead only if you provide it with some non-trivial deleter.
std::shared_ptr always has memory overhead for reference counter, though it is very small.
std::unique_ptr has time overhead only during constru...
Removing colors from output
...all conceivable ANSI escape sequences:
./somescript | sed 's/\x1B[@A-Z\\\]^_]\|\x1B\[[0-9:;<=>?]*[-!"#$%&'"'"'()*+,.\/]*[][\\@A-Z^_`a-z{|}~]//g'
(and if you have @edi9999's SI problem, add | sed "s/\x0f//g" to the end; this works for any control char by replacing 0f with the hex of the u...
How to use clock() in C++
...#include <cstdio>
#include <ctime>
int main() {
std::clock_t start;
double duration;
start = std::clock();
/* Your algorithm here */
duration = ( std::clock() - start ) / (double) CLOCKS_PER_SEC;
std::cout<<"printf: "<< duration <<'\n';
}
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How can I check if a background image is loaded?
...'<img/>').attr('src', 'http://farm6.static.flickr.com/5049/5220175127_5693faf952.jpg').load(function() { $('html').css('background-image', 'url(http://farm6.static.flickr.com/5049/5220175127_5693faf952.jpg)'); })) and check HTTP requests in Firebug. If I have opened flicker page with this imag...
Using multiple arguments for string formatting in Python (e.g., '%s … %s')
...swered Jul 18 '14 at 17:49
Lordn__nLordn__n
31411 silver badge1111 bronze badges
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GoogleTest: How to skip a test?
...have a broken test that you cannot fix right away, you can add the DISABLED_ prefix to its name. This will exclude it from execution."
Examples:
// Tests that Foo does Abc.
TEST(FooTest, DISABLED_DoesAbc) { ... }
class DISABLED_BarTest : public ::testing::Test { ... };
// Tests that Bar does Xyz...
Why do you create a View in a database?
...base in which some of the entities were person, company, role, owner type, order, order detail, address and phone, where the person table stored both employees and contacts and the address and phone tables stored phone numbers for both persons and companies, and the development team were tasked with...
How can I change an element's text without changing its child elements?
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This won't preserve the order of the nodes, however. e.g. if the text was at the end of the element first, it would now be at the start.
– Matt
Aug 31 '15 at 17:47
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Adding :default => true to boolean in existing Rails column
...dding a default boolean value to an existing column. So I tried the change_column suggestion but I mustn't be doing it right.
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How to do a SOAP Web Service call from Java class?
... layer.)
About the second approach (create your custom SOAP client):
In order to implement the second approach, you'll have to:
Make the call:
Use the SAAJ (SOAP with Attachments API for Java) framework (see below, it's shipped with Java SE 1.6 or above) to make the calls; or
You can also do ...