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How to get the number of characters in a std::string?
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If you're using a std::string, call length():
std::string str = "hello";
std::cout << str << ":" << str.length();
// Outputs "hello:5"
If you're using a c-string, call strlen().
const char *str = "hello";
std::cout << str <<...
Difference: std::runtime_error vs std::exception()
... in the exception hierarchy. It has no other uses. In other words, conceptually it is an abstract class (even though it is not defined as abstract class in C++ meaning of the term).
std::runtime_error is a more specialized class, descending from std::exception, intended to be thrown in case of vari...
Magic number in boost::hash_combine
The boost::hash_combine template function takes a reference to a hash (called seed ) and an object v . According to the docs , it combines seed with the hash of v by
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CSS: How to position two elements on top of each other, without specifying a height?
...exactly on top of each other. However, when I do that, the formatting gets all screwed up because the containing DIV acts like there is no height. I think this is the expected behavior with position:absolute but I need to find a way to position these two elements on top of each other and have the ...
How do you remove all the options of a select box and then add one option and select it with jQuery?
Using core jQuery, how do you remove all the options of a select box, then add one option and select it?
24 Answers
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Javascript calculate the day of the year (1 - 366)
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This works across Daylight Savings Time changes in all countries (the "noon" one above doesn't work in Australia):
Date.prototype.isLeapYear = function() {
var year = this.getFullYear();
if((year & 3) != 0) return false;
return ((year % 100) != 0 || (year % 4...
Vim: Close All Buffers But This One
How can I close all buffers in Vim except the one I am currently editing?
13 Answers
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Is there a way to check if int is legal enum in C#?
...ple
{
public static void Main()
{
object value;
// Call IsDefined with underlying integral value of member.
value = 1;
Console.WriteLine("{0}: {1}", value, Enum.IsDefined(typeof(PetType), value));
// Call IsDefined with invalid underlying integral value.
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How to remove elements from a generic list while iterating over it?
...orEach(i => Console.WriteLine(i));
Alternately, you can use the RemoveAll method with a predicate to test against:
safePendingList.RemoveAll(item => item.Value == someValue);
Here's a simplified example to demonstrate:
var list = new List<int>(Enumerable.Range(1, 10));
Console.Writ...
Java HTTPS client certificate authentication
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Finally managed to solve all the issues, so I'll answer my own question. These are the settings/files I've used to manage to get my particular problem(s) solved;
The client's keystore is a PKCS#12 format file containing
The c...