Bienlein:
There is the nice old Smalltalk-80 inject:into: method in the Collection class:| list sum | list := OrderedCollection new add: 1; add: 2; add: 3; yourself. sum := list inject: 0 into: [ :a :b | a + b ]. Transcript cr; show: sum. "prints 6"A little more general ;-). The Scala guys have also cloned it where it is called foldLeft.
In D there's std.algorithm.reduce. I think Scala guys have copied something older than Smalltalk. Bye, bearophile
