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Daniel Kokin
1,496 PointsSetting and Getting question
I'm just now starting to understand the concept of setting and getting. However, I'm a bit confused about all the different ways. In the diner example there are few ways discussed:
//set values like this
[table1 setSubtotal: 12.75];
table1.subtotal = 12.75;
//get values like this
float someValue = table1.subtotal;
However, I'm not sure how I would apply the following approach in a similar scenario. Is this just for elements with key value pairs? Can someone clear it up?
[grilledCheese setValue:<#(nullable id)#> forKey:<#(nonnull NSString *)#>]
1 Answer
Martin Wildfeuer
Courses Plus Student 11,071 PointsLet's assume grilled cheese is an instance of a class called Cheese. Cheese has a property of type string called country. This is what the setting this value would look like, just as in your example above.
grilledCheese.country = "Switzerland";
[grilledCheese setCountry:"Switzerland"];
[grilledCheese setValue:"Switzerland" forKey:"country"];
Dot notation, that is, the first example, is the preferred way. This is explained in detail in the Apple Developer Docs: Key-Value Coding Fundamentals.
Hope that helps :)