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Difference Between ByRef and ByVal. When would each be used

By Dinesh Thakur

When you pass a value to procedure you may pass it ByVal of ByRef

The ByVal sends a copy of the argument’s value to the procedure cannot alter the original value. ByRef sends a reference indicating where the value is stored in memory, allowing the called procedure to actually change the argument’s original value.  

 

You can specify how you want to pass the argument by using the ByVal or ByRef keyword before the arguments. Arguments are passed by reference by default.

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About Dinesh Thakur
Dinesh ThakurDinesh Thakur holds an B.C.A, MCDBA, MCSD certifications. Dinesh authors the hugely popular Computer Notes blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps.

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