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MySQL select 10 random rows from 600K rows fast
...from a huge file of unknown size, in one reading. Once you come up with an idea, it is easy to generalize it for selecting multiple records. So yes, sorting the entire file is ridiculous. At the same time, it is very handy. I just used this approach to pick 10 random rows from a table with 1,000,00...
AngularJs event to call after content is loaded
... work. it choked at elem.ready( $scope.$apply( readyFunc( $scope ))); Any ideas why that might be? Perhaps an update to angular happened? Anyway - it's an elegant approach, if it could work.
– domoarigato
Jun 8 '15 at 19:37
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Converting String to Int with Swift
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Basic Idea, note that this only works in Swift 1.x (check out ParaSara's answer to see how it works in Swift 2.x):
// toInt returns optional that's why we used a:Int?
let a:Int? = firstText.text.toInt() // firstText is UIT...
Binary Data in MySQL [closed]
... him implying that you should NEVER do it, as opposed to saying it's a bad idea most of the time. I agree with him generally, but not in 100% of cases. There can be considerations other than performance. For example I'm working on something now where performance doesn't matter at all. Other fa...
WAMP shows error 'MSVCR100.dll' is missing when install
...s component
In fact if you are running the 64bit Windows it is a good idea to install all the 32bit libraries as well as the 64bit ones. After all 64bit windows runs 64 and 32 bit code. You will probably find you need at least one of the 32bit runtimes for some app/utility you will install at s...
Set type for function parameters?
... do a lot of stuff in vi, just as you can make music videos in Excel. Good idea? Probably not. Use the right tool for the job.
– Dan Dascalescu
Feb 3 at 22:46
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Why should I not include cpp files and instead use a header?
...se individually, and somehow link them together afterwards!" An excellent idea, in theory. But what if your program needs to know what's going on in a different file? It's impossible to completely separate your codebase unless you want to run a bunch of tiny tiny .exe files instead.
"But surely ...
Remove all subviews?
... a copy of the array is kept
When removing all the subviews, it is a good idea to start deleting at the end of the array and keep deleting until you reach the beginning. This can be accomplished with this two lines of code:
for (int i=mySuperView.subviews.count-1; i>=0; i--)
[[mySuperVi...
Unable to export Apple production push SSL certificate in .p12 format
...clicked on that one but it only appears in the 'Certificates' section. Any ideas?
– Nazar Medeiros
Feb 12 at 15:09
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Remove all special characters with RegExp
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Good to know for internationalization, i had no idea JS regex wasn't UTF-8 minded.
– LessQuesar
Nov 8 '17 at 7:52
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