what is value and what is reference?

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what is value and what is reference?
why enum is value type and why array is reference type?
difference between value and reference?

Posted 31-Jul-11 0:17am

sathyan_8294

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Abhinav S · Answer 1 · 2011-07-31T00:27:00

Solution 3

Whenever we talk of holding a pointer to a location where the value is stored, we are talking about a reference. By value is when we are directly working with that value - no pointer or reference involved.

Posted 31-Jul-11 0:27am

Abhinav S

Richard MacCutchan · Answer 2 · 2011-07-31T00:23:00

Solution 1

Check in here[^]. This is largely for C# but the rules are the same.

Posted 31-Jul-11 0:23am

Richard MacCutchan

walterhevedeich · Answer 3 · 2011-07-31T00:25:00

Solution 2

These are questions that are easily answered by Google. Try pasting your questions on Google one by one.

Posted 31-Jul-11 0:25am

walterhevedeich

Manas Bhardwaj · Answer 4 · 2011-07-31T00:54:00

Solution 4

Is google [^]broken at your place?

Anyways, this is what MSDN say about it:

http://msdn.microsoft.com/en-us/library/s1ax56ch.aspx[^]

http://msdn.microsoft.com/en-us/library/490f96s2.aspx[^]

Posted 31-Jul-11 0:54am

Manas Bhardwaj

YvesDaoust · Answer 5 · 2011-07-31T04:53:00

When passing a value, the receiving function gets a copy of the value.

When passing a reference, the receiving function gets an address where the value is stored.

The difference is that when the function modifies the value and returns, the modified value is just discarded (by value) or remains in effect (by reference).