CODEWITHSUNDEEP
c#.netoopc#-4.0static
DooDoo
DooDoo

Reputation: 13487

variable in static methods inside static class

please consider this code :

1)public static class MyClass
2){
3)    public static DateTime MyMethod(DateTime dt)
4)    {
5)         DateTime temp = new DateTime();
6)         temp = dt.AddDays(1);
7)         return temp;
8)    }
9)}

Does temp variable has instance per any calls to MyMethod? or because it is in a static method inside static class just one instance of temp variable allocate in memory?

thanks

Upvotes: 2

Views: 2469

Answers (4)

Bob.
Bob.

Reputation: 4002

The temp variable, even in a static method, has to be declared a static, otherwise it is just created locally in that instance, then blown away when the method call ends.

Upvotes: 0

brgerner
brgerner

Reputation: 4371

temp has one instance per call.

BTW I'm missing possibility to define static local variables in static methods as in C++.

Upvotes: 0

Jon Skeet
Jon Skeet

Reputation: 1503859

Does temp variable has instance per any calls to MyMethod?

If you mean "does each call to MyMethod get a separate temp variable?" then the answer is yes.

The fact that it's a static method in a static class is irrelevant - it's a local variable, so you get a "new" local variable on each call.

Upvotes: 4

Sergey Kalinichenko
Sergey Kalinichenko

Reputation: 727077

temp is neither a static nor an instance variable, it is a local variable. It absolutely does not matter whether the method in which it is declared is static or not: the variable's scope starts at the point of its declaration, and ends at the closing curly brace } of the scope in which it is declared. Each executing thread that goes through MyMethod gets its own copy of temp, which is invisible anywhere outside the variable's scope.

Upvotes: 7

Related Questions