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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
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How do I call one constructor from another in Java?
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Yes, it is possible:
public class Foo {
private int x;
public Foo() {
this(1);
}
public Foo(int x) {
this.x = x;
}
}
To chain to a particular superclass constructor instead of one in the same class, use super instead of this. Note that y...
Unsigned keyword in C++
...d long. When one of these type modifiers is used by itself, a data type of int is assumed
This means that you can assume the author is using ints.
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Average of 3 long integers
I have 3 very large signed integers.
12 Answers
12
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Fixed size queue which automatically dequeues old values upon new enques
...ue<T>();
private object lockObject = new object();
public int Limit { get; set; }
public void Enqueue(T obj)
{
q.Enqueue(obj);
lock (lockObject)
{
T overflow;
while (q.Count > Limit && q.TryDequeue(out overflow)) ;
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Overloading and overriding
...t signatures.
//Overloading
public class test
{
public void getStuff(int id)
{}
public void getStuff(string name)
{}
}
Overriding
Overriding is a principle that allows you to change the functionality of a method in a child class.
//Overriding
public class test
{
public...
What is the effect of extern “C” in C++?
What exactly does putting extern "C" into C++ code do?
15 Answers
15
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Do the parentheses after the type name make a difference with new?
...e of initialization, value initialization was added.
Assume:
struct A { int m; }; // POD
struct B { ~B(); int m; }; // non-POD, compiler generated default ctor
struct C { C() : m() {}; ~C(); int m; }; // non-POD, default-initialising m
In a C++98 compiler, the following should occur:
new A ...
Datetime - Get next tuesday
...y;
// The (... + 7) % 7 ensures we end up with a value in the range [0, 6]
int daysUntilTuesday = ((int) DayOfWeek.Tuesday - (int) today.DayOfWeek + 7) % 7;
DateTime nextTuesday = today.AddDays(daysUntilTuesday);
If you want to give "a week's time" if it's already Tuesday, you can use:
// This fi...
Difference between size_t and unsigned int?
I am so confused about size_t . I have searched on the internet and everywhere mentioned that size_t is an unsigned type so, it can represent only non-negative values.
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