How do I set optional parameters in VBA?

The Optional keyword must be present to make a parameter optional. The data type should be (but need not be, see below) a Variant data type. The optional parameter(s) must be at the end of the parameter list. The IsMissing function will work only with parameters declared as Variant .

What is optional parameter in VB net?

When you call a procedure with an optional parameter, you can choose whether to supply the argument. If you do not, the procedure uses the default value declared for that parameter.

How do you specify an optional parameter?

Optional parameters are defined at the end of the parameter list, after any required parameters. If the caller provides an argument for any one of a succession of optional parameters, it must provide arguments for all preceding optional parameters. Comma-separated gaps in the argument list aren’t supported.

What is optional parameter in php?

When creating functions in PHP it is possible to provide default parameters so that when a parameter is not passed to the function it is still available within the function with a pre-defined value. These default values can also be called optional parameters because they don’t need to be passed to the function.

What is VBA optional?

When you call a procedure with an optional argument, you can choose whether or not to specify the optional argument. If you don’t specify the optional argument, the default value, if any, is used. If no default value is specified, the argument would be for any variable of the specified type.

What is false about optional parameters in VB net?

Optional parameters are always defined as a Last arguments in the function. As the name supplies,Optional Parameters are treated as optional,we need not to pass values to Optional Parameters but sometimes it’s required. We always assign its value to anything or we have to provide a default values to it.

What are the optional parameters?

A method that contains optional parameters does not force to pass arguments at calling time. It means we call method without passing the arguments. The optional parameter contains a default value in function definition. If we do not pass optional argument value at calling time, the default value is used.

What is user defined function in PHP?

PHP has a large number of built-in functions such as mathematical, string, date, array functions etc. It is also possible to define a function as per specific requirement. Such function is called user defined function. A function is a reusable block of statements that performs a specific task.

What is void variable?

A void variable would be a variable which has no type and hence occupies no space at all, making it completely meaningless to declare. However, you can still declare a void pointer (void *). A void pointer is a pointer which has no type, but hence can point to any type.

What are functions How are functions declared and parameters passed to the functions?

How you divide up your code among different functions is up to you, but logically the division is such that each function performs a specific task. A function declaration tells the compiler about a function’s name, return type, and parameters. A function definition provides the actual body of the function.