parsing a range expression

(parse-range-expr :20s 0.8 {:unit :ms})

categorising the unit range

(parse-range-unit :start {}) => :array 0

(parse-range-unit :end {}) => :array -1

(parse-range-unit :1m {:unit :ms}) => :time 60000

(parse-range-unit :-1m {:unit :ms}) => :time -60000

(parse-range-unit 0.44 {}) => :ratio 0.44

processes items given a filter

(process-filter 1 2 3 4 5 6 7 8 even? {}) => 2 4 6 8

range stage in the process pipeline

(process-range (range 10000) {:time {:key identity :unit :s :order :asc} :range :1m :5m :sample 10 :linear}) => 60 86 112 138 164 190 216 242 268 300

(process-range (range 10000) {:time {:key identity :unit :ms :order :asc} :range :-1s (Date. 7000) :sample 10 :linear}) => 6000 6111 6222 6333 6444 6555 6666 6777 6888 7000

ends the array range given :for option

(range-end-for 2 3 4 {} :array 2 {:order :asc :key identity}) => 2 3

ends the array range given :to option

(range-end-to 2 3 4 {:dropped 2} :array 4 {:order :asc :key identity}) => 2 3

standardises units for negative inputs

chooses the start of the array

(range-start 1 2 3 4 {} :array 2 {:order :asc :key identity}) => [2 3 4]

(range-start -2 -1 0 1 2 {} :time 2 {:order :asc :key identity}) => [2 0 1 2]

(range-start -2 -1 0 1 2 {} :absolute 0 {:order :asc :key identity}) => [2 0 1 2]

function wrapper for range-start and range-end functions

selects the range

(select-range 1 2 3 4 5 {:type :for :start :array 1 :end :array 3} {:order :asc :key identity}) => 2 3 4

helper for range select when a date value is at the end

helper for standard range select