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difference between primary key and unique key
I'm using mysql database. I have a confusion between primary key and unique key.
15 Answers
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Utilizing the GPU with c# [closed]
...ach project is:
GPU.Net (TidePowerd) - I tried this 6 months ago or so, and did get it working though it took a little bit of work. Converts C# kernel code to cuda at compile time. Unfortunately their website has been down and their github hasn't been updated for a couple of years, which might in...
Preventing referenced assembly PDB and XML files copied to output
... I'm finding that I'm also getting the referenced assemblies' .pdb (debug) and .xml (documentation) files in my output directory (and ZIP).
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Force “git push” to overwrite remote files
I want to push my local files, and have them on a remote repo, without having to deal with merge conflicts. I just want my local version to have priority over the remote one.
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D Programming Language in the real world? [closed]
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I'm using D for my research work in the area of computer graphics. I and others have had papers published in our fields based on work done using D. I think it's definitely ready for use on small to medium sized research projects where performance matters. It's a nice fit for research work be...
What is the reason not to use select *?
...The essence of the quote of not prematurely optimizing is to go for simple and straightforward code and then use a profiler to point out the hot spots, which you can then optimize to be efficient.
When you use select * you're make it impossible to profile, therefore you're not writing clear & s...
@Media min-width & max-width
...ult CSS for the older browsers, as older browsers including i.e. 5.5, 6, 7 and 8. Can't read @media. When I use @media I use it like this:
<style type="text/css">
/* default styles here for older browsers.
I tend to go for a 600px - 960px width max but using percentages
*/
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Receive result from DialogFragment
...tFragment(this, MY_REQUEST_CODE) from the place where you show the dialog, and then when your dialog is finished, from it you can call getTargetFragment().onActivityResult(getTargetRequestCode(), ...), and implement onActivityResult() in the containing fragment.
It seems like an abuse of onActivity...
Beyond Stack Sampling: C++ Profilers
The date is 12/02/10. The days before Christmas are dripping away and I've pretty much hit a major road block as a windows programmer. I've been using AQTime, I've tried sleepy, shiny, and very sleepy, and as we speak, VTune is installing. I've tried to use the VS2008 profiler, and it's been posi...
What's the best way to learn LISP? [closed]
I have been programming in Python, PHP, Java and C for a couple or years now, and I just finished reading Hackers and Painters, so I would love to give LISP a try!
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