I don't really think of it as *an* operator. It's a chain, or collection, of reference/dereferencing to nastiness (doesn't mean I don't use it).
Intervalpation? -- Free map of local environmental resources: http://CambridgeMA.GreenMap.org -- MOTD on Pungenday, the 42nd of Confusion, in the YOLD 3172: Everybody repeat after me....."We are all individuals."