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Why do we copy then move?
... a raw C string, a std::string will be constructed, then copied again: two allocations.
There is the C++03 method of taking a reference to a std::string, then swapping it into a local std::string:
struct S
{
std::string data;
S(std::string& str)
{
std::swap(data, str);
}
};
that...
What are the effects of exceptions on performance in Java?
... way to avoid the "rock and hard place" choice you present here, is to pre-allocate an object that represents "success". Usually one can also pre-allocate objects for the common failure cases. Then only in the rare case of passing back additional detail, is a new object created. (This is the OO equi...
Setting UIButton image results in blue button in iOS 7
...]];
Add an UIImageView to your button.
UIImageView * img = [[UIImageView alloc] initWithImage:[UIImage...]];
[button addSubView:img];
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How does one escape backslashes and forward slashes in VIM find/search?
...he / character (to record a macro). The solution was to search using the ? token instead of the /.
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iPhone: Setting Navigation Bar Title
...ify the last navigation item:
UINavigationItem* item = [[UINavigationItem alloc] initWithTitle:@"title text"];
...
[bar pushNavigationItem:item animated:YES];
[item release];
or
bar.topItem.title = @"title text";
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Prevent any form of page refresh using jQuery/Javascript
...e else while the WebSocket is connected, so you should be able to assign a token to that user, and clear it once the socket closes. But, it's hacking around the expected behavior of the user agent, so it's probably bad UX. I can think of extremely few cases where something like this would be appropr...
How can I pass data from Flask to JavaScript in a template?
... Try this the next time you get Uncaught SyntaxError: Unexpected token & in the javascript console.
– scharfmn
Jan 5 '15 at 23:49
8
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Changing navigation title programmatically
...vigationItem is also set. Generally, this is better than programmatically allocating and initializing a UINavigationBar that's not linked to anything.
You miss out on some of the benefits and functionality that the UINavigationBar was designed for. Here is a link to the documentation that may help...
How to create a sub array from another array in Java?
...e nulls trailing elements if they are out of source array range instead of allocating a smaller array :(
– Daneel S. Yaitskov
Jun 26 '15 at 14:59
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Angular ng-repeat Error “Duplicates in a repeater are not allowed.”
... me, i expect json, after using $http service, but SyntaxError: Unexpected token o at Object.parse (native)
– aurelius
Mar 18 '15 at 7:35
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