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iOS

Posted by Alain Ghiai
Alain Ghiai
4,287 Points

What does the self keyword mean?

I can't understand the use of the self keyword can someone please explain it to me.

2 Answers

agreatdaytocode
agreatdaytocode
24,757 Points

This was confusing for me as well when I first started.

Check out https://github.com/raywenderlich/swift-style-guide#use-of-self

http://stackoverflow.com/questions/26835013/what-is-self-used-for-in-swift

Both links provide a good overview of self. 

class BoardLocation {

  let row: Int, column: Int

  init(row: Int, column: Int) {
    self.row = row  // this is pointing to the init row
    self.column = column // this is pointing to the init column 

    let closure = {
      println(self.row)
    }
  }
}

Use self when required to differentiate between property names and arguments in initializers, and when referencing properties in closure expressions (as required by the compiler):

Alain Ghiai
Alain Ghiai
4,287 Points
Alain Ghiai
Alain Ghiai
4,287 Points

thanks !