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Fast permutation -> number -> permutation mapping algorithms
...elements. For the sake of an example, let's say, 7 elements, 1234567. I know there are 7! = 5040 permutations possible of these 7 elements.
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navigator.geolocation.getCurrentPosition sometimes works sometimes doesn't
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@sajith - Not sure if this solution is now outdated with recent FF browsers. It worked at the time I provided the solution because I needed it for a site I was working on. Have you tested?
– going
Nov 7 '12 at 21:55
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How bad is shadowing names defined in outer scopes?
...t as yadda but miss one of the places it is used in the function's body... Now data refers to the global, and you start having weird behaviour - where you would have a much more obvious NameError if you didn't have a global name data.
Also remember that in Python everything is an object (including...
Implementing Comments and Likes in database
...be changed without affecting any code: only the stored procedures should know about the schema.
You may have to refactor the schema several times. This is normal. Don't worry about getting it perfect the first time. Just make it functional enough to prototype an initial design. If you have the...
When to use actors instead of messaging solutions such as WebSphere MQ or Tibco Rendezvous?
...sage queue paradigm (google Spring's Reactor). Really the only distinction now is that RabbitMQ has durable messages.. oh wait Akka supports that now also. He may say "Actor" in the title but explicitly points out Akka which does have massive overlap with many message based systems (both concurrent ...
How can I read input from the console using the Scanner class in Java?
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This is now a better, more up to date answer than the original one imo.
– logicOnAbstractions
Mar 26 '18 at 16:00
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css3 transition animation on load?
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@SuzanneEdelmanCreoconcept to my knowledge, IE9 doesn't support the transition property. Your options would be JS or graceful degradation.
– Chris Spittles
Oct 22 '16 at 15:37
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How do I make a dotted/dashed line in Android?
I'm trying to make a dotted line. I'm using this right now for a solid line:
19 Answers
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Why is the default value of the string type null instead of an empty string?
...ublic static string EmptyNull(this string str)
{
return str ?? "";
}
Now this works safely:
string str = null;
string upper = str.EmptyNull().ToUpper();
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How to get Android crash logs?
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You can use Apphance. This is a cross-platform service (now mainly Android, iOS with other platforms on their way) which allows to debug remotely any mobile device (Android, iOS now - others under development). It's much more than just a crashlog, in fact it is much more: logging,...