What is the difference between ByRef and ByVal?

What is the difference between ByRef and ByVal?

ByRef = You give your friend your term paper (the original) he marks it up and can return it to you. ByVal = You give him a copy of the term paper and he give you back his changes but you have to put them back in your original yourself.

How do you pass parameter values by reference in procedure parameters?

When to Pass an Argument by Reference

1. If the procedure has a genuine need to change the underlying element in the calling code, declare the corresponding parameter ByRef.
2. If the correct execution of the code depends on the procedure changing the underlying element in the calling code, declare the parameter ByRef .

What is ByVal and ByRef in VBA?

Using ByVal makes copies of the data, and the copy will only be accessible from within the called sub, while the original data can only be accessed and modified from within the calling sub. Conversely, ByRef allows you to access and modify the original data from both the calling and the called sub.

What does ByRef mean?

reference
ByRef in means that a reference to the original value will be sent to the function. It’s almost like the original value is being directly used within the function. Operations like = will affect the original value and be immediately visible in the calling function .

Is ByRef faster than ByVal?

With a large Byte() array, ByVal is faster than ByRef , but it’s also negligible.

What is a parameter in a procedure?

A parameter represents a value that the procedure expects you to supply when you call it. The procedure’s declaration defines its parameters. You can define a procedure with no parameters, one parameter, or more than one. An argument represents the value you supply to a procedure parameter when you call the procedure.

What is a ByVal in VBA?

ByVal is a statement in VBA. ByVal stands for By Value i.e. when the subprocedure called in from the procedure the value of the variables is reset to the new value from the new procedure called in.

What is the difference between ByRef and ByVal arguments?

ByVal argument: It is a literal short form of by value. When an argument is passed as ByVal argument to a different sub or function, only the value of the argument is sent.

When to replace ByRef with BYVAL in Excel?

Replace ByRef with ByVal. Result when you click the command button on the sheet: Explanation: When passing arguments by reference we are referencing the original value. The value of x (the original value) is changed in the function.

Do you pass arguments by reference or ByVal in VBA?

ByRef and ByVal. You can pass arguments to a procedure (function or sub) by reference or by value. By default, Excel VBA passes arguments by reference. As always, we will use an easy example to make things more clear.

When to use ByVal and by reference in the procedure calculate?

Procedure Calculate has both a ByVal and a ByRef parameter. Given an interest rate, rate, and a sum of money, debt, the task of the procedure is to calculate a new value for debt that is the result of applying the interest rate to the original value of debt.