Asterisk is sometimes on a variable type, sometimes on a variable name. What for?

Question

In Objective-C, I saw, for example:

UIPickerView *tweetPicker

and

UIPickerView* tweetPicker

What does an asterisk mean (I know the first part is a hoax ...) and why does this happen in different parts of the declaration in different contexts?

Answer 1

In the specific case that you show, there is no difference. Some people like to think of what tweetPickertype is UIPickerView *, that is, a pointer to UIPickerView. These people usually write it like

UIPickerView* tweetPicker;

Other people prefer to think of it as *tweetPicker- it is UIPickerView, that is, dereferencing a pointer gives UIPickerView. These people usually write:

UIPickerView *tweetPicker;

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int  *a, *b, *c;

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Answer 2

, . objective-C .

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UIPickerView * tweetPicker

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