par (clj)

Creates a parallel array from coll. ops, if supplied, perform on-the-fly filtering or transformations during parallel realization or calculation. ops form a chain, and bounds must precede filters, must precede maps. ops must be a set of keyword value pairs of the following forms: :bound [start end] Only elements from start (inclusive) to end (exclusive) will be processed when the array is realized. :filter pred Filter preds remove elements from processing when the array is realized. pred must be a function of one argument whose return will be processed via boolean. :filter-index pred2 pred2 must be a function of two arguments, which will be an element of the collection and the corresponding index, whose return will be processed via boolean. :filter-with [pred2 coll2] pred2 must be a function of two arguments, which will be corresponding elements of the 2 collections. :map f Map fns will be used to transform elements when the array is realized. f must be a function of one argument. :map-index f2 f2 must be a function of two arguments, which will be an element of the collection and the corresponding index. :map-with [f2 coll2] f2 must be a function of two arguments, which will be corresponding elements of the 2 collections.