wat a mess in the one-liner at the end ... searching for a piping method

watwat.jl

julia> Pkg.checkout("MarketTechnicals", "series")

julia> using MarketTechnicals

julia> op  = readseries(Pkg.dir("MarketTechnicals/test/data/spx.csv"), value=2);

julia> hi  = readseries(Pkg.dir("MarketTechnicals/test/data/spx.csv"), value=3);

julia> lo  = readseries(Pkg.dir("MarketTechnicals/test/data/spx.csv"), value=4);

julia> cl  = readseries(Pkg.dir("MarketTechnicals/test/data/spx.csv"), value=5);

julia> daysdojiregistered = index(cl[value(doji(op,hi,lo,cl))])
13-element Array{Date{ISOCalendar},1}:
 1970-03-31
 1970-06-02
 1970-06-09
 1970-08-05
 1970-09-02
 1971-02-02
 1971-02-04
 1971-03-25
 1971-05-05
 1971-07-02
 1971-08-10
 1971-08-25
 1971-11-12

This is a bit more elegant

doji(op,hi,lo,cl) |> x -> cl[value(x)] |> index

Or maybe this, a bit more readable but an extra pipe

doji(op,hi,lo,cl) |> value |> x -> cl[x] |> index

Or, if you want to know what dates were there dojis in the month of February,

 doji(op,hi,lo,cl) |> value |> x -> cl[x] |> x -> bymonth(x, 2) |> index