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Objective C Function Syntax
I come from a C++ and C# background. Can someone break down the syntax of this function in this video:
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section;
I understand it returns a NSInteger and takes another NSInteger as a parameter but I don't quite understand the tableView part of it: "tableView:(UITableView *)tableView" before the function name. it's not a return type so I find the placement of it weird. Does it have to do with inheritance? Can someone break down this syntax for me please. Thanks.
John Wheal27,969 Points
In C, the syntax would be:
NSInteger tableView(tableview, section);
Objective C adds more words than C. In the example below:
- numberOfRowsInSection describes the input parameter to the method
- NSInteger is the type of input parameter
- section is the actual parameter
Although it looks long and complex it is actually much more readable the C.
By your C syntax example, you're indicating the name of the method is tableView. But I understand the name of the method is numberOfRowsInSection. I don't get it how there is a parameter before the method name i.e. tableview. What makes it special that it can go before instead of after the method name like I'm used to seeing in C? Thanks.