How to send arrays to a function

How can i send arrays to a function?

example i have an array with 400 elements containing random numbers how can i send those to a function, say to add 1 to each them?

You define your sub or function to take an array of the given type as a parameter then you pass your array as a parameter.

Code:

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Private Function DoSomething(ByVal MyArray as Integer()) as Integer()
'dosomething with the array
return MyArray
end function

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You could optionally use a sub and ByRef to work directly with your existing array depending on your needs.

you can use a lambda function for that:

vb Code:

Dim numbers() As Integer = Enumerable.Range(1, 400).ToArray
numbers = Array.ConvertAll(numbers, Function(x) x + 1)

Quote:

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Originally Posted by DataMiser

You could optionally use a sub and ByRef to work directly with your existing array depending on your needs.

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There is no need to use ByRef. All arrays are instances of the Array class. Just like all class instances, they are reference type objects. As such, there is no copy made and any changes you make to the one and only Array object are reflected in the caller. Just like all classes, the only reason you would need to use ByRef was if you actually wanted to assign a new object to the parameter inside the method.

Quote:

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Originally Posted by jmcilhinney

There is no need to use ByRef. All arrays are instances of the Array class. Just like all class instances, they are reference type objects. As such, there is no copy made and any changes you make to the one and only Array object are reflected in the caller. Just like all classes, the only reason you would need to use ByRef was if you actually wanted to assign a new object to the parameter inside the method.

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I did not know that, Thanks