SOLVED: Hacking with macOS, project 1, SourceViewController.swift errors

@thejim

Nov '20

Hi! Got another newbie question. In project 1 of Hacking with macOS, I've added NSTableViewDataSource, NSTableViewDelegate to the class SourceViewController and “func numberOfRows(in tableView: NSTableView) -> Int { return 100 }" to SourceViewController below the existing viewDidLoad():. The book says you can run the program again and not see any errors, but when I do I get the following errors: 2020-11-27 09:02:27.588717-0600 Project1[56452:19787066] *** Illegal NSTableView data source (<Project1.SourceViewController: 0x600000798e00>). Must implement numberOfRowsInTableView: and tableView:objectValueForTableColumn:row:

Also, when I run it I don't see "Table View Cell" in 100 rows. Just a blank gray window.

Here's my complete code:

import Cocoa

class SourceViewController: NSViewController, NSTableViewDataSource, NSTableViewDelegate {
@IBOutlet var tableView: NSTableView!

    override func viewDidLoad() {
        func numberOfRows(in tableView: NSTableView) -> Int {
            return 100
        }
        super.viewDidLoad()
        // Do view setup here.
    }

}

Have I done something wrong?

@nemecek-filip

Nov '20

Your function is nested inside another function (viewDidLoad). You need to move it outside:

override func viewDidLoad() {

        super.viewDidLoad()
        // Do view setup here.
    }

     func numberOfRows(in tableView: NSTableView) -> Int {
            return 100
        }

@thejim

Nov '20

that did it! Thank you so much, @nemecek-filip

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