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What uses are there for “placement new”?

...he lifetime of the original char objects by re-using their storage. If you now call delete[] buf the dynamic type of the object(s) pointed to no longer matches their static type so you have undefined behaviour. It is more consistent to use operator new/operator delete to allocate raw memory inteded ...
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Apache Kafka vs Apache Storm

...ions on real time data in parallel. The common flow of these tools (as I know it) goes as follows: real-time-system --> Kafka --> Storm --> NoSql --> BI(optional) So you have your real time app handling high volume data, sends it to Kafka queue. Storm pulls the data from kafka and app...
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Locking a file in Python

...ired.") with open("myfile.txt"): # work with the file as it is now locked share | improve this answer | follow | ...
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How to pass object with NSNotificationCenter

... Thanks, I'm setting messageTotal to a badge on a UIButton, do you know how I can refresh the button with the new badge count? The code to display the image in viewDidLoad is UIBarButtonItem *eRXButton = [BarButtonBadge barButtonWithImage:buttonImage badgeString:@"1" atRight:NO toTarget:self...
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ssh: Could not resolve hostname [hostname]: nodename nor servname provided, or not known

...rent for different routers though, so look up directions for your router. Now, when I am outside of my home network I connect to my pi by typing: ssh pi@[hostname] Then I am able to input my password and connect. sh...
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Algorithm for classifying words for hangman difficulty levels as “Easy”,“Medium”, or “Hard”

...onary, you'd start with a list of words that you think they are likely to know. For example, you might have a look at Wiktionary's lists of the most frequently used words in various English corpora. For example, among the 1,700 six-letter words in the 10,000 most common words in Project Gutenberg a...
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Why does Razor _layout.cshtml have a leading underscore in file name?

...ghtful answer. I was under the misapprehension that Razor was tied to MVC. Now I see the reason for the leading underscore is to prevent them from being served directly under ASP.NET Web Pages. – richb Jan 3 '11 at 1:53 ...
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How do I sort a vector of pairs based on the second element of the pair?

... c++14, the best solution is very easy to write thanks to lambdas that can now have parameters of type auto. This is my current favorite solution std::sort(v.begin(), v.end(), [](auto &left, auto &right) { return left.second < right.second; }); Just use a custom comparator (it's ...
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Changing the background drawable of the searchview widget

...mply make one local copy and use it in selector drawable for both themes. Now, you'll need to edit downloaded nine-patches to your need (i.e. changing blue color to red one). You can take a look at file using draw 9-patch tool to check if it is correctly defined after your edit. I've edited files ...
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Overcoming “Display forbidden by X-Frame-Options”

...ks well in FF/Chrome/Opera but doesn't work in IE/Edge though. Anyone who knows something which will? – Collector Aug 18 '15 at 4:49 7 ...