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How can I output the value of an enum class in C++11
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Unlike an unscoped enumeration, a scoped enumeration is not implicitly convertible to its integer value. You need to explicitly convert it to an integer using a cast:
std::cout << static_cast<std::underlying_type<A>::type>(a) << std::endl;
You may want to encapsulate ...
Divide a number by 3 without using *, /, +, -, % operators
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Use itoa to convert to a base 3 string. Drop the last trit and convert back to base 10.
// Note: itoa is non-standard but actual implementations
// don't seem to handle negative when base != 10.
int div3(int i) {
char str[42];
s...
How can I safely encode a string in Java to use as a filename?
...t with an underscore, using regex.
This means that something like "How to convert £ to $" will become "How_to_convert___to__". Admittedly, this result is not very user-friendly, but it is safe and the resulting directory /file names are guaranteed to work everywhere. In my case, the result is not...
Convert System.Drawing.Color to RGB and Hex Value
...ld clean the whole thing up using the following:
private static String HexConverter(System.Drawing.Color c)
{
return "#" + c.R.ToString("X2") + c.G.ToString("X2") + c.B.ToString("X2");
}
private static String RGBConverter(System.Drawing.Color c)
{
return "RGB(" + c.R.ToString() + "," + c.G...
How to have an auto incrementing version number (Visual Studio)? [duplicate]
...attern.Matches(output);
if( matches.Count == 1 )
{
major = Convert.ToInt32(matches[0].Groups["major"].Value);
minor = Convert.ToInt32(matches[0].Groups["minor"].Value);
build = Convert.ToInt32(matches[0].Groups["build"].Value) + 1;
revision = Convert.ToInt32(m...
Can we make unsigned byte in Java
I am trying to convert a signed byte in unsigned. The problem is the data I am receiving is unsigned and Java does not support unsigned byte, so when it reads the data it treats it as signed.
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Why do function pointer definitions work with any number of ampersands '&' or asterisks '*'?
...l reason why all of these work is that a function (like foo) is implicitly convertible to a pointer to the function. This is why void (*p1_foo)() = foo; works: foo is implicitly converted into a pointer to itself and that pointer is assigned to p1_foo.
The unary &, when applied to a function,...
Integer to hex string in C++
How do I convert an integer to a hex string in C++ ?
17 Answers
17
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How do I get the color from a hexadecimal color code using .NET?
...re looking for it:
using System.Windows.Media;
Color color = (Color)ColorConverter.ConvertFromString("#FFDFD991");
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How to convert an Array to a Set in Java
I would like to convert an array to a Set in Java. There are some obvious ways of doing this (i.e. with a loop) but I would like something a bit neater, something like:
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