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What's “P=NP?”, and why is it such a famous question? [closed]
...r P=NP is perhaps the most famous in all of Computer Science. What does it mean? And why is it so interesting?
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Is there a MySQL option/feature to track history of changes to records?
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It's subtle.
If the business requirement is "I want to audit the changes to the data - who did what and when?", you can usually use audit tables (as per the trigger example Keethanjan posted). I'm not a huge fan of triggers, but it has the great benefit of bein...
Git for beginners: The definitive practical guide
...rent directory.
To make a new project, run git init with an additional argument (the name of the directory to be created):
git init project002
(This is equivalent to: mkdir project002 && cd project002 && git init)
To check if the current current path is within a git repository, sim...
Best practices for API versioning? [closed]
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This is a good and a tricky question. The topic of URI design is at the same time the most prominent part of a REST API and, therefore, a potentially long-term commitment towards the users of that API.
Since evolution of an application and, to a lesser extent, its API is a fact of life and that it...
Rotated elements in CSS that affect their parent's height correctly
Let's say I have a couple of columns, of which some I'd like to rotate the values of:
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What are the differences between Autotools, Cmake and Scons?
...r tests for "compatibility", etc.
If you're not paying attention, you will mess up cross-compilation ability (It
should clearly be noted that Nokia came up with Scratchbox/Scratchbox2 to side-step highly broken Autotools build setups for Maemo/Meego.) If you, for any reason, have fixed, static path...
How to write WinForms code that auto-scales to system font and dpi settings?
Intro: There's a lot of comments out there that say "WinForms doesn't auto-scale to DPI/font settings well; switch to WPF." However, I think that is based on .NET 1.1; it appears they actually did a pretty good job of implementing auto-scaling in .NET 2.0. At least based on our research and testing...
What are the mathematical/computational principles behind this game?
My kids have this fun game called Spot It! The game constraints (as best I can describe) are:
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Can someone explain the “debounce” function in Javascript
...e "debouncing" function in javascript, written here : http://davidwalsh.name/javascript-debounce-function
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GetHashCode Guidelines in C#
... hash code on the mutable data because two equal objects must return the same hash code and the hash code has to be valid for the lifetime of the object. If the hash code changes, you end up with an object that gets lost in a hashed collection because it no longer lives in the correct hash bin.
For...