Concurrent Programming in Mac OS X and iOS with Grand Central Dispatch

To Steven Paul Jobs: From Mac OS’s very first incarnation, to the present one, wherein the legacy of NeXTSTEP still lives, his relationship with Apple is forever entrenched in OS X (and iOS). People focus on his effect on Apple as a company. No less of an effect, though hidden to the naked eye, is on its architecture. I resisted the pixie dust for 25 years, but he finally made me love Mac OS... Just as soon as I got my shell prompt.