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Why prefer two's complement over sign-and-magnitude for signed numbers?
I'm just curious if there's a reason why in order to represent -1 in binary, two's complement is used: flipping the bits and adding 1?
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How do PHP sessions work? (not “how are they used?”)
Session files are usually stored in, say, /tmp/ on the server, and named sess_{session_id} . I have been looking at the contents and cannot figure out how they really work.
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What's the difference between detaching a Fragment and removing it?
In the Android docs for a FragmentTransaction I noticed two very similar methods: detach and remove . The descriptions over there don't seem to provide much insight about when to use each, and from what I can tell they appear to be the same.
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How to execute ipdb.set_trace() at will while running pytest tests
I'm using pytest for my test suite. While catching bugs in complex inter-components test, I would like to place import ipdb; ipdb.set_trace() in the middle of my code to allow me to debug it.
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Convert array of integers to comma-separated string
It's a simple question; I am a newbie in C#, how can I perform the following
5 Answers
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What does SQL clause “GROUP BY 1” mean?
Someone sent me a SQL query where the GROUP BY clause consisted of the statement: GROUP BY 1 .
6 Answers
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Understanding the transclude option of directive definition?
I think this is one of the hardest concept for me to understand with angularjs's directive.
6 Answers
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WPF Databinding: How do I access the “parent” data context?
I have a list (see below) contained in a window. The window's DataContext has two properties, Items and AllowItemCommand .
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Razor ViewEngine: How do I escape the “@” symbol?
I'm trying to output some Twitter handles in ASP.NET MVC3 in conjunction with the Twitter @Anywhere API, and I haven't been able to figure out how to actually escape the "@" symbol in a Razor view.
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Tell Ruby Program to Wait some amount of time
How do you tell a Ruby program to wait an arbitrary amount of time before moving on to the next line of code?
6 Answers
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