when a user single-clicks the row in the table, an action is invoked. elsewhere, i have [tableView selectRowIndexes:[NSIndexSet indexSetWithIndex:variable] byExtendingSelection:NO];, which selects the appropriate row. however, I want to invoke that same single-click action. how do i do that?

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I would guess tableView target] performSelector:[tableView action] withObject:tableView]; This is the usual way that actions are sent by subclasses of [[NSView. –JediKnil