Parameter array Params:C # Allow you to specify one (only one) specific parameter for a function. This parameter must be the last parameter in the function definition. It is called a parameter.
Array. A parameter array can call a function with an
Ref and out
Today, my younger brother asked me about the difference between ref and out.In C #, ref and out are two special keywords. You can use them to pass parameters according to references.In general, we usually pass the value to the method.
out keyword causes arguments to be passed by reference. ' >ref keyword outKeyword causes arguments to being passed by reference. ' >ref keyword causes an argument to is passed by reference, not by value. ' The >ref keyword causes a parameter to
In C #, ref and out are two special keywords. You can use them to pass parameters according to references.
In general, we usually pass the value to the method. the method obtains a copy of these values, and then uses these copies. After the method
Both ref and out are keywords in C #, and the functionality is similar to specifying that a parameter is passed by reference.For compiled programs, there is no difference between them, that is, they only have syntax differences.To sum up, they have
ref keyword causes an argument to be passed by reference, not by value.">The ref keyword passes arguments by reference, not by value. The effect of passing by reference is that any changes to the parameters in the called method are reflected in the
[C # Basics] differences between ref and out,
When using methods in C # to obtain the return value, only one return value is usually obtained. Therefore, when a method needs to return multiple values, it needs to use ref and out. What are the
[C #] Analysis of ref and out parameters,
The parameter passed by reference is a major feature of C # compared with many other languages. It is not easy to understand this concept in depth, then, the value type and reference type will become even
ref (C # Reference)
Visual Studio 2015Other versions
The REF keyword causes the parameter to be passed by reference, not by value. The effect passed by reference is that any changes to the parameters in the called method are reflected in the
paramsThe params keyword can specify a method parameter that takes a parameter at a variable number of arguments.
No additional arguments are allowed after the params keyword in the method declaration, and only one params keyword is allowed
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