ref keyword in C#

Hello guys, I'm just reading a bit about the

ref

ref

keyword. I understood that when we use that keyword, we tell the compiler that we want to directly work with the memory address of the variable and not a copy of it (when using it inside a method).

I have one question. I noticed that the

ref

ref

keyword is used both when writing the arguments during the method call like

callMethod(ref variable)

callMethod(ref variable)

and also during declaring the parameters of a method, we use the keyword, like

static void changeValue(ref int x)

static void changeValue(ref int x)

.

Can someone explain why ref should be used in both the arguments and parameters, why not use it either in argument or parameter

C#•14mo ago•

49 replies

Faker

ref keyword in C#

Hello guys, I'm just reading a bit about the

ref

ref

ref

ref

keyword is used both when writing the arguments during the method call like

callMethod(ref variable)

callMethod(ref variable)

and also during declaring the parameters of a method, we use the keyword, like

static void changeValue(ref int x)

static void changeValue(ref int x)

.

Can someone explain why ref should be used in both the arguments and parameters, why not use it either in argument or parameter

ref keyword in C#

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