Clash Royale CLAN TAG#URR8PPP

Static variable inside class

I am much confused about static variable actually i am executing below program.

class ABC

public static int prop get; set;
const int i =5;
static int j;

public ABC()

prop = 8;
j = 9;
Console.WriteLine("Under ABC class's constructor.");


public int getValue()

j = 6;
prop = 89;
return j;



class Program

static void Main(string args)

ABC obj = new ABC();
Console.WriteLine(obj.getValue());
//Console.WriteLine(ABC.j);
Console.ReadLine();




And its executing without any compile or run time error.

I have following confusions.

static

1 Answer
1

can we assign static variable/property inside the non static
constructor?

Yes.

can we assign static variable/property inside the instance method
also?

Yes.

If we can do assignment in above two cases for static
variable/property then what is the use of static constructor?

A static constructor is also called a type initializer. It is responsible for initializing the type it is defined in. You may use it to perform calculations that can be done upfront and are the same for all instances of that type. You'll therefore save some execution time when creating an instance because the calculation has already been done by the type initializer. Note that the type initializer runs before the type is used the first time. So you cannot deterministically tell when it actually runs. You can also not catch exceptions thrown by it because you don't actually invoke the type initializer yourself. You therefore need to be careful not to put error prone operations inside type initializers (f.e. do not do IO operations inside them).

Finally what are the locations inside a class where we can
assign/initialize a static variable/property?

From anywhere. Note that, even across threads, you can read and write to a static member from anywhere. This makes it very hard to find bugs that may occure due to a programm mutation a static somewhere in memory.

As a side note: Try to avoid having mutable static memory to keep your application simpler. If you really need to ... you should consider locking access to the static resource to prevent data races.

lock

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