Last week I read a post: Objective-C libraries and Unix philosophy.
It was such an inspiring reading that I was encouraged to extract an NSView subclass from my disk dust, and release it as a library via CocoaPods: KASeparatorLine.
So it just draws separator line and nothing else. It doesn’t even draw vertical line - at least for now.
I can imagine usages of requiring expsoing properties to set line colors, remove gradiant, and of course draw a vertical line. That doesn’t matter. Small is beautiful.