getting market data into Julia

load_spx.jl

julia> require("Calendar")
julia> using Calendar
julia> require("DataFrames")
julia> using DataFrames
julia> require("Thyme")
julia> using Thyme
julia> spx = read_stock("spx.csv");
julia> check = falses(nrow(spx));
julia> for i in 1:nrow(spx)
       check[i] = dayofweek(spx[i,1]) == 6
       end
julia> within!(spx, quote
       friday = DataVec($(check))
       end)
julia> load("~/.julia/Mirepoix/dailyReturn.jl")
julia> dailyRET = daily_return(spx["Close"])
julia> within!(spx, quote
       RET = $(dailyRET)
       end)
julia> fridays = spx[spx["friday"] .== true]