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Error : The service is invalid
...to clear the DerivedData as @AminNegm-Awad mentioned. I restarted IDE too, now it's all fine. Superb answer and comments!
– Vijay Kumar Kanta
Apr 10 '19 at 12:25
2
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How to avoid overflow in expr. A * B - C * D
...c * d
x / (a * d) = (a * b - c * d) / (a * d)
x / (a * d) = b / d - c / a
now, the integer/mod stuff:
x / (a * d) = (b / d + ( b % d ) / d) - (c / a + ( c % a ) / a )
x / (a * d) = (b / d - c / a) - ( ( c % a ) / a - ( b % d ) / d)
x = (b / d - c / a) * a * d - ( ( c % a ) * d - ( b % d ) * a)
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Why are mutable structs “evil”?
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Developing in C#, you usually need mutability ever now and then - especially with your Business Model, where you want streaming etc. to work smoothly with existing solutions. I wrote an article on how to work with mutable AND immutable data, solving most issues around mutabil...
How do I copy a hash in Ruby?
I'll admit that I'm a bit of a ruby newbie (writing rake scripts, now). In most languages, copy constructors are easy to find. Half an hour of searching didn't find it in ruby. I want to create a copy of the hash so that I can modify it without affecting the original instance.
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python: how to identify if a variable is an array or a scalar
... ah, it's a tuple on the right, not a list, got it, thanks and it works now. I regret, I can't upvote 2 times - the best solution so far :)
– Oleg Gryb
Jun 12 '14 at 17:42
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Structs versus classes
... a meaningful, user-focused, relevant performance metric, and then you'll know whether the change has a meaningful effect on real users in relevant scenarios.
Structs consume less heap memory (because they are smaller and more easily compacted, not because they are "on the stack"). But they take lo...
Difference between break and continue statement
...red May 21 '12 at 23:12
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How to return PDF to browser in MVC?
...Add(new Paragraph("Hello World"));
document.Add(new Paragraph(DateTime.Now.ToString()));
document.Close();
byte[] byteInfo = workStream.ToArray();
workStream.Write(byteInfo, 0, byteInfo.Length);
workStream.Position = 0;
return new FileStreamResult(workStream, "application/p...
The EXECUTE permission was denied on the object 'xxxxxxx', database 'zzzzzzz', schema 'dbo'
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Hi, I know it was a bit time ago, but I have a question. Might such action have some security problems? Does it opens sp to be used for everyone?
– Valentyn Vynogradskiy
Aug 4 '14 at 10:39
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Why is division in Ruby returning an integer instead of decimal value?
... I've built a prime number generator in Ruby in order to learn the syntax, now I'm optimizing it to learn what works best. Here's the benchmark I put together: require 'base64';require 'zlib';puts Zlib.inflate(Base64.decode64("eJxlkMEOwiAQRO98hekFuGzxQEwPXvwR01ZqiYHqBk2Tln8XDlWgnDbM25nJonq9NaoD7ZTtR...