Is VBA default ByRef or ByVal?

ByRef (Default) Passing an argument by reference is the default. If you pass a variable defined as a user defined datatype to a procedure, it must be passed by reference. Attempting to pass it by value will cause an error.

What is the difference between ByRef and ByVal in VBA?

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

What does ByRef do in VBA?

Byref in VBA stands for “By Reference”. With the help of VBA Byref, we can target the original value without changing the value stored in variables. In other words, we will directly be passing the value to Sub procedures instead of going through the regular methods of defining and assigning the values to variables.

What is the difference in passing values ByRef or ByVal to a procedure?

When you pass an object ByRef, the reference is passed by reference and the called procedure can change the object to which that reference refers to. When an object is passed ByVal an copy of the reference (address) of the object is passed.

Is VBA pass by reference?

By default, Excel VBA passes arguments by reference. As always, we will use an easy example to make things more clear. The code calls the function Triple. It’s the result of the second MsgBox we are interested in.

How do you pass a parameter in VBA?

VBA allows you to pass variables into subroutines and functions in two ways. You can specify either ByVal or ByRef for each of the variables that are passed in. The ByVal and ByRef distinction for subroutine and function parameters is very important to make. In VBA all objects are passed by reference.

Is ByRef faster than ByVal?

If you are passing really large Arrays or Lists of Controls that take up a lot of memory then it would use a little less memory using ByRef and it may be slightly faster. Lists and arrays are reference types, so there is no performance or memory difference between ByRef and ByVal.

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 .

How do you pass parameters in VBA?

To pass an argument by reference, use the ByRef keyword before the argument to its left. Passing arguments by reference is also the default in vba, unless you explicity specify to pass an argument by value. Example 4a – Passing an argument by value in a procedure using the ByVal keyword.

Which type of arguments Cannot be passed by value?

A Variant argument will accept a value of any built-in data type; and any list, array, or object. A Variant argument will not accept a value of a user-defined type. Keep in mind, however, that lists, arrays, objects, and user-defined types cannot, and therefore should not, be passed by value.

How do you call a macro in VBA?

Calling a function from a worksheet formula

1. Choose Developer → Code → Macros.
2. Type the word CubeRoot in the Macro Name box.
3. Click the Options button.
4. Enter a description of the function in the Description box.
5. Click OK to close the Macro Options dialog box.
6. Close the Macro dialog box by clicking the Cancel button.

What’s the difference between ByVal and ByRef in VBA?

Any changes made in to the copy of variable, will reflect in original argument. We can say that, instead of value, the location of value is sent to function using ByRef to a function. This is the default argument in VBA. We don’t need to write ByRef before argument.

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 do you need to specify ByRef in a function?

You almost always want to pass ByVal, and this is in fact the default. There’s no reason for the code to be cluttered up with ByVal all over the place; that’s just “noise”. Only specify ByRef explicitly when you absolutely must have pass-by-reference semantics. – Cody Gray ♦ Feb 9 ’12 at 8:51

Do you use ByVal for an out argument?

As Any for an _Out_ argument is not a good idea (I’m not even sure if that’s possible); if you use ByVal for such you want it to be As Long (see further below for the “why”).