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What exactly does stringstream do?
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Sometimes it is very convenient to use stringstream to convert between strings and other numerical types. The usage of stringstream is similar to the usage of iostream, so it is not a burden to learn.
Stringstreams can be used to both read strings and write data into strings. It...
Scala best way of turning a Collection into a Map-by-key?
...h a variable number of tuples. So use the map method on the collection to convert it into a collection of tuples and then use the : _* trick to convert the result into a variable argument.
scala> val list = List("this", "maps", "string", "to", "length") map {s => (s, s.length)}
list: List[(j...
Converting SVG to PNG using C# [closed]
I've been trying to convert SVG images to PNG using C#, without having to write too much code. Can anyone recommend a library or example code for doing this?
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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...
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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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...
Integer to hex string in C++
How do I convert an integer to a hex string in C++ ?
17 Answers
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