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Algorithm for creating a school timetable
...nother institute. Clearly, if he ends the lesson there at 10.30, he cannot start at your premises at 10.30, because he needs some time to commute between the institutes.
two teachers are married. In general, it's considered good practice not to have two married teachers on the same class. These two ...
PHP DateTime::modify adding and subtracting months
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My solution to the problem:
$startDate = new \DateTime( '2015-08-30' );
$endDate = clone $startDate;
$billing_count = '6';
$billing_unit = 'm';
$endDate->add( new \DateInterval( 'P' . $billing_count . strtoupper( $billing_unit ) ) );
if ( intval( $...
Debugging App When Launched by Push Notification
... in executables.
Click on the Debugging tab tab in the inspector.
Uncheck "Start executable after starting debugger"
Check the "Wait for next launch/push notification"
Now when you click debug from Xcode instead of launching the app a window will display telling it is waiting for the app to launch...
Is this a “good enough” random algorithm; why isn't it used if it's faster?
...called a linear congruential generator. The generator works as follows:
Start with a seed value and multiplier.
To generate a random number:
Multiply the seed by the multiplier.
Set the seed equal to this value.
Return this value.
This generator has many nice properties, but has significant ...
SQL Server add auto increment primary key to existing table
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This is a really good answer, but how can I change the starting integer from 1 to 1000? I would like to start counting at 1000. I suspect I can use ALTER TABLE ORDER ALTER COLUMN ORDERNO RESTART WITH 1 but I didn't want to try it without checking with an expert :) Ref. pic.dh...
Simplest way to do a fire and forget method in C#?
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What about this Task.Factory.StartNew(() => myevent()); from answer stackoverflow.com/questions/14858261/…
– Luis Perez
Dec 28 '14 at 17:58
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What is the correct way to create a single-instance WPF application?
...sting instance of the application to the foreground when the user tries to start another instance. That's a very nice touch that the other Mutex solutions described here do not address.
UPDATE
As of 8/1/2014, the article I linked to above is still active, but the blog hasn't been updated in a w...
“Cannot connect to iTunes Store” in-app purchases
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I created a new test account and in-app purchase started working again. Thanks!
– Miha Hribar
Sep 27 '11 at 13:28
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Joda-Time: what's the difference between Period, Interval and Duration?
...nds. The duration is often obtained from an interval. i.e. we can subtract start from end of an interval to derive a duration
A period in Joda-Time represents a period of time defined in terms of fields, for example, 3 years 5 months 2 days and 7 hours. This differs from a duration in that it is in...
AngularJS Folder Structure [closed]
...app organized by type. Not too bad for smaller apps, but even here you can start to see it gets more difficult to find what you are looking for. When I want to find a specific view and its controller, they are in different folders. It can be good to start here if you are not sure how else to organiz...