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Get last n lines of a file, similar to tail
I'm writing a log file viewer for a web application and for that I want to paginate through the lines of the log file. The items in the file are line based with the newest item on the bottom.
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Recommended date format for REST GET API
...f not having ugly URI is a concern (e.g. not including the url encoded version of :, -, in you URI) and (human) addressability is not as important, you could also consider epoch time (e.g. http://example.com/start/1331162374). The URL looks a little cleaner, but you certainly lose readability.
Th...
What exactly is Python's file.flush() doing?
I found this in the Python documentation for File Objects :
4 Answers
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Understand the “Decorator Pattern” with a real world example
...eties and they will also provide toppings in the menu. Now imagine a situation wherein if the pizza shop has to provide prices for each combination of pizza and topping. Even if there are four basic pizzas and 8 different toppings, the application would go crazy maintaining all these concrete combin...
In what situations would AJAX long/short polling be preferred over HTML5 WebSockets?
I am building a small chat application for friends, but unsure about how to get information in a timely manner that is not as manual or as rudimentary as forcing a page refresh.
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Do declared properties require a corresponding instance variable?
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If you are using the Modern Objective-C Runtime (that's either iOS 3.x or greater, or 64-bit Snow Leopard or greater) then you do not need to define ivars for your properties in cases like this.
When you @synthesize the property, the ivar will in effect be synthesized also for you. This...
Is there something like Annotation Inheritance in java?
I'm exploring annotations and came to a point where some annotations seems to have a hierarchy among them.
4 Answers
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Convert a PHP script into a stand-alone windows executable
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Peachpie
http://www.peachpie.io
https://github.com/iolevel/peachpie
Peachpie is PHP 7 compiler based on Roslyn by Microsoft and drawing from popular Phalanger. It allows PHP to be executed within the .NET/.NETCore by compiling the PHP code to pure MSIL...
Using :before CSS pseudo element to add image to modal
I have a CSS class Modal which is absolutely positioned, z-indexed above it's parent, and nicely positioned with JQuery. I want to add a caret image (^) to the top of the modal box and was looking at using the :before CSS pseudo selector to do this cleanly.
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list every font a user's browser can display
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The JavaScript version is a bit flaky. It gets fonts by iterating through known fonts and testing.
The most accurate way (albeit having to use a propriety plugin) is to use Flash. Here you can get the list of fonts without having to test for ...