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Android: upgrading DB version and adding new table
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@Greyson: Great point! Honestly, I feel a bit dumb for never really thinking about it. Sometimes I think we get in the habit of using the arguments we want and ignoring the rest!
– jkschneider
Nov 15 '11 at 9:07
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What's the absurd function in Data.Void useful for?
...ata.Void has the following signature, where Void is the logically uninhabited type exported by that package:
6 Answers
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What's wrong with nullable columns in composite primary keys?
...e discussing "enterprise" RDMBSs), but comparison results can vary quite a bit when you throw a NULL into the mix -- because NULL == "don't know" so all results of a comparison involving a NULL wind up being NULL since you can't know something that is unknown. DANGER! Think carefully about that: thi...
How to emulate C array initialization “int arr[] = { e1, e2, e3, … }” behaviour with std::array?
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10 Answers
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Binding a Button's visibility to a bool value in ViewModel
...iewModel to a presentation technology (WPF vs. ASP.Net MVC, for example) a bit, but I seldom need to mix those technologies and refactoring if I ever do doesn't scare me, much.
– Jacob Proffitt
Aug 9 '11 at 21:07
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What does new self(); mean in PHP?
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@user : I've edited my answer to give a bit more informations about self and inheritance ; and I've also included some informations about static in PHP 5.3 ;; hope this helps :-)
– Pascal MARTIN
Mar 7 '10 at 14:18
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Is it possible to print a variable's type in standard C++?
...oesn't quite lay everything out for VS, and I'm tweaking his code a little bit. But since this answer gets a lot of views, take some time to go over there and upvote his answer, without which, this update would never have happened.
#include <cstddef>
#include <stdexcept>
#include <c...
Vagrant error: NFS is reporting that your exports file is invalid
...noted in Discourse as Your First Rails App:
Vagrant 1.1.2
VirtualBox 4.2.10
I was having the same issue on Mac (OS X 10.9 (Mavericks)), but rolling back to these versions seemed to fix it for me.
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Setting PayPal return URL and making it auto return?
...he idea of setting the Auto Return values as described above by Kevin is a bit strange!
Say, for example, that you have a number of websites that use the same PayPal account to handle your payments, or say that you have a number of sections in one website that perform different purchasing tasks, an...
How can I measure the similarity between two images? [closed]
...e of course)
Edit A combining scaling algorithm is one that when scaling 10 pixels down to one will do it using a function that takes the color of all those 10 pixels and combines them into one. Can be done with algorithms like averaging, mean-value, or more complex ones like bicubic splines.
The...