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How does std::forward work? [duplicate]
..._cast<T&&> is confusing. Our intuition for a cast is that it converts a type to some other type -- in this case it would be a conversion to an rvalue reference. It's not! So we are explaining one mysterious thing using another mysterious thing. This particular cast is defined by a tabl...
Pass array to mvc Action via AJAX
... you just need to stringify your values. The JSONValueProvider in MVC will convert that back into an IEnumerable for you.
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Determine if map contains a value for a key?
... the map for a keyvalue that is '2'. IIRC the C++ compiler will implicitly convert '2' to an int, which results in the numeric value for the ASCII code for '2' which is not what you want.
Since your keytype in this example is int you want to search like this: m.find(2);
...
Testing whether a value is odd or even
... numbers are floats in JavaScript and using a bitwise operator means first converting it into an int, then performing the operation, and then converting it back to a floating point number.
– poke
Sep 25 '17 at 11:25
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SQL Server SELECT into existing table
...(SELECT DISTINCT
SUBSTRING(
(
SELECT ', table1.' + SYSCOL1.name AS [text()]
FROM sys.columns SYSCOL1
WHERE SYSCOL1.object_id = SYSCOL2.object_id and SYSCOL1.is_identity <> 1
ORDER BY SYSCOL1.object_id
FOR XML PATH ('')
...
What is the difference between char array and char pointer in C?
...s provided where one of type char* is expected, the compiler automatically converts the array into a pointer to its first element.
Your example function printSomething expects a pointer, so if you try to pass an array to it like this:
char s[10] = "hello";
printSomething(s);
The compiler pretend...
Listing all permutations of a string/integer
...
Here I have found the solution. It was written in Java, but I have converted it to C#. I hope it will help you.
Here's the code in C#:
static void Main(string[] args)
{
string str = "ABC";
char[] charArry = str.ToCharArray();
Permute(charArry, 0, 2);
Console.ReadKey();
}
st...
dynamic_cast and static_cast in C++
... a class Base of which there is a derived class Derived, dynamic_cast will convert a Base pointer to a Derived pointer if and only if the actual object pointed at is in fact a Derived object.
class Base { virtual ~Base() {} };
class Derived : public Base {};
class Derived2 : public Base {};
class R...
Remove underline from links in TextView - Android
...which is the case for a basic http:// link. However, Linkify is smart and converts a phone number like (212) 555-1212 into the URL tel:2125551212. The new URLSpanNoUnderline call should be passed span.getURL() to retain this info, otherwise you generate bad links that cause exceptions when clicked...
java: HashMap not working
...foo", new Integer(3));
Auto-boxing means the first version is implicitly converted to the second. Auto-unboxing means you can write:
int i = myMap.get("foo");
instead of:
int i = myMap.get("foo").intValue();
The implicit call to intValue() means if the key isn't found it will generate a Null...