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Least common multiple for 3 or more numbers
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I would go with this one (C#):
static long LCM(long[] numbers)
{
return numbers.Aggregate(lcm);
}
static long lcm(long a, long b)
{
return Math.Abs(a * b) / GCD(a, b);
}
static long GCD(long a, long b)
{
return b == 0 ? a : GCD(b, a % ...
How do I drag and drop files into an application?
...rland's Turbo C++ environment, but I'm not sure how to go about it for a C# application I'm working on. Are there best practices or gotchas to look out for?
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What is the use of “ref” for reference-type variables in C#?
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Jon Skeet wrote a great article about parameter passing in C#. It details clearly the exact behaviour and usage of passing parameters by value, by reference (ref), and by output (out).
Here's an important quote from that page in relation to ref parameters:
Reference parameters d...
Access to the path is denied
...d a solution to my problem.
I'm trying to save image to the folder in .net c# but get this exception:
23 Answers
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Prevent user from seeing previously visited secured page after logout
...t the answer that relates to the OP's programming language of choice. Your C# solution won't help in the OP's Java EE project.
– Buhake Sindi
Sep 4 '15 at 9:29
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How do I round to the nearest 0.5?
...ke you need to round to the nearest 0.5. I see no version of round in the C# API that does this (one version takes a number of decimal digits to round to, which isn't the same thing).
Assuming you only have to deal with integer numbers of tenths, it's sufficient to calculate round (num * 2) / 2. ...
Error 5 : Access Denied when starting windows service
...m getting this error when I try to start a windows service I've created in C#:
31 Answers
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Elegant way to combine multiple collections of elements?
... my sequences look cleaner with the Concat call. It's less of a problem in C# 6. You can just write:
return Concat(list1.Select(x = > x),
list2.Where(x => true),
list3.OrderBy(x => x));
Wished we had list concatenation operators in C#, something like:
list1...
Convert Enum to String
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As of C#6 the best way to get the name of an enum is the new nameof operator:
nameof(MyEnum.EnumValue);
// Ouputs
> "EnumValue"
This works at compile time, with the enum being replaced by the string in the compiled result, w...
Why does (0 < 5 < 3) return true?
... @MrMisterMan: I'm not certain about Javascript, but in Java and C# the evaluation is guaranteed to be left to right, and the result is indeed 18. In some languages, such as C and C++, there is no guarantee it will be evaluated left to right, and you may end up with different results depe...