Excel 2010 - Public Function vs Function

I went into various sheets in my workbook using a message function I created. It worked in all sheets.  Even though I didn't preface my function with the word public.
What does "Public" do to function procedures that just having the word "function" doesn't do?
I see no difference because I was able to use the same function in every sheet in my workbook.
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Martin LissOlder than dirtCommented:
Public makes it available anywhere in your workbook. It could also be Private, but without either it is assumed to be Public.

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Fabrice LambertConsultingCommented:
As martin said, the Public or Private or Friend keyword define the visibility of your functions (or precedures):
- Public is visible from anywhere.
- Friend is visible only within the project.
- Private is visible only within the module.

Same goes with variables.

It is a good practice to explicitly define the visibility of your functions / variables, and restrict it as much as possible.
If a function is supposed to be called only within a module (or class), there is no reason to make it public.
brothertruffle880Author Commented:
Thanks Martin!
Martin LissOlder than dirtCommented:
You’re welcome and I’m glad I was able to help.

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Marty - Microsoft MVP 2009 to 2017
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