In our Retrobituaries series, we highlight interesting people who are no longer with us. Today let's explore the life of Edsger Dijkstra, who died at 72 in 2002. If you’ve used a computer or ...

A semaphore (pronounced as sehm uh fawr, invented by Edsger Dijkstra) in computer science is a classic way of protecting shared resources. In multi-programming environments like Unix systems ...