sort SerialArray

sortthis.jl

abstract AbstractSeries

immutable SerialPair{T, V} <: AbstractSeries
  index::T
  value::V
end

type SerialArray{T,V} <: AbstractSeries
  collection::Array{SerialPair{T,V},1} # this prevents arrays of mixed types
  idxname::String
  valname::String
end

# construct a SerialArray

foo = SerialPair(1, 10); bar = SerialPair(12, 15); baz = SerialPair(4, 459)
sa  = SerialArray([foo, bar, baz])

# show code not provided, but this is what it looks like:

index  values
1  10
12  15
4  459

# and we need an inner constructor that enforces the array is sorted by the index field of the SerialPair

julia> using DataSeries, Datetime

julia> foo = SerialPair(today(), 10); bar = SerialPair(today()-days(1), 15); baz = SerialPair(today()+days(1), 459)
2013-12-04  459

julia> sa  = SerialArray([foo, bar, baz])
index  values
2013-12-03  10
2013-12-02  15
2013-12-04  459

julia> sort(sa)
index  values
2013-12-02  15
2013-12-03  10
2013-12-04  459