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How can I get the max (or min) value in a vector?
...ame T, size_t N> const T* myend (const T (&a)[N]) { return a+N; }
int main()
{
const int cloud[] = { 1,2,3,4,-7,999,5,6 };
std::cout << *std::max_element(mybegin(cloud), myend(cloud)) << '\n';
std::cout << *std::min_element(mybegin(cloud), myend(cloud)) <&l...
Positive Number to Negative Number in JavaScript?
...the ~ bitwise operator.
For example, if you have a = 1000 and you need to convert it to a negative, you could do the following:
a = ~a + 1;
Which would result in a being -1000.
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C++ Returning reference to local variable
...
This code snippet:
int& func1()
{
int i;
i = 1;
return i;
}
will not work because you're returning an alias (a reference) to an object with a lifetime limited to the scope of the function call. That means once func1() returns,...
defaultdict of defaultdict?
Is there a way to have a defaultdict(defaultdict(int)) in order to make the following code work?
6 Answers
...
How do you format an unsigned long long int using printf?
...ong modifier with the u (unsigned) conversion. (Works in windows, GNU).
printf("%llu", 285212672);
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C compile error: “Variable-sized object may not be initialized”
... not a compile time constant).
You must manually initialize that array:
int boardAux[length][length];
memset( boardAux, 0, length*length*sizeof(int) );
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How to determine the number of days in a month in SQL Server?
...SQL Server 2014: case when datediff(m, dateadd(day, 1-day(@date), @date), convert(date, convert(datetime, 2958463))) > 0 then datediff(day, dateadd(day, 1-day(@date), @date), dateadd(month, 1, dateadd(day, 1-day(@date), @date))) else 31 end
– bradwilder31415
...
How to retrieve all keys (or values) from a std::map and put them into a vector?
...ionally, it moves functionality away from the call site. Which can make maintenance a little more difficult.
I'm not sure if your goal is to get the keys into a vector or print them to cout so I'm doing both. You may try something like this:
std::map<int, int> m;
std::vector<int> key, ...
How to do constructor chaining in C#
... method) to pick the overload, inside the class:
class Foo
{
private int id;
private string name;
public Foo() : this(0, "")
{
}
public Foo(int id, string name)
{
this.id = id;
this.name = name;
}
public Foo(int id) : this(id, "")
{
...
Practical uses for AtomicInteger
I sort of understand that AtomicInteger and other Atomic variables allow concurrent accesses. In what cases is this class typically used though?
...