This package provides the type DataValue
that is used to represent missing data.
Currently the main use of this type is in the Query.jl and IterableTables.jl packages.
This repo is based on the following principles/ideas:
- This type is meant to make life for data scientists as easy as possible. That is the main guiding principle.
- We hook into the dot broadcasting mechanism from julia 0.7 to provide
lifting functionality for functions that don't have specific methods
for
DataValue
arguments. - The
&
and|
operators follow the 3VL semantics forDataValue
s. - Comparison operators like
==
,<
etc. onDataValue
s returnBool
values, i.e. they are normal predicates. - The package provides many lifted methods.
- One can access or unpack the value within a
DataValue
either via theget(x)
function, or use thex[]
syntax.
Any help with this package would be greatly appreciated!