Whats the use of having synthesize statement

Question

Possible Duplicates:
Obj-C @synthesize
Synthesized property and variable with underscore prefix: what does this mean?

Whats the use of having synthesize statement like this

@synthesize popOverTableData = _popOverTableData;

Thanks!

Answer 1

It simply states that the backing variable for popOverTableData is _popOverTableData. Normally without this, and just doing @synthesize popOverTableData means that the backing variable is called the same.