What's The Difference Between Passing By Reference & Passing By Value?

Hi Everyone,
Today i would like share information about the topic "Pass by value & Pass by reference". This is topics is very confusing for the beginners, so i have come up with an simple example(definition) to make you understand. Source

Example Scenario : Let Say I want to share a web page with you.

Passing By Reference :

• If I tell you the URL, I'm passing by reference. You can use that URL to see the same web page witch I can see. 
• If that page is changed, we both see the changes. 
• If you delete the URL, all you're doing is destroying your reference to that page - you're not deleting the actual page itself.

Passing By Value :

• If I print out the page and give you the printout, I'm passing by value. 
• Your page is a disconnected copy of the original. 
• You won't see any subsequent changes, and any changes that you make (e.g. scribbling on your printout) will not show up on the original page. 
• If you destroy the printout, you have actually destroyed your copy of the object - but the original web page remains intact

Proud To Be a DAX Developer :-)