Support CSS' :nth-child pseudo-class

[aidansteele]

One neat feature that the-other-styling-framework (:smile:) has is support for CSS's :nth-child pseudo-class. It comes in particularly handy for e.g. when giving alternating background colours to UITableViewCell.

What I am currently doing is something like

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath;
{
  Subclass *c = (Subclass *)cell;
  [cell setBackgroundColor:[indexPath row] % 2 ? [c firstColor] : [c secondColor]];
}

And the stylesheet has:

Subclass {
    first-color: #fff;
    second-color: #ddd;
}

It'd be great if there was a better way to do this!

[keithnorm]

The way web devs did this before :nth-child was invented was to append a class of "even" to the even table rows and define the styles for .even in your CSS file. Could do the same with Classy and would be more in line with what I think is great about the separation between style and content that Classy provides. I can work up an example if you want more details.

[dnedrow]

@keithnorm comment added to wiki.