.. Copyright 2022 NWChemEx-Project
..
.. Licensed under the Apache License, Version 2.0 (the "License");
.. you may not use this file except in compliance with the License.
.. You may obtain a copy of the License at
..
.. http://www.apache.org/licenses/LICENSE-2.0
..
.. Unless required by applicable law or agreed to in writing, software
.. distributed under the License is distributed on an "AS IS" BASIS,
.. WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
.. See the License for the specific language governing permissions and
.. limitations under the License.

#########################
Property Type Development
#########################

The topics in this chapter will walk you through writing and designing property 
types. Needing to design a property type is common when a project starts and 
becomes less common when an established set of property types already exists 
(because the likelihood that a property type already exists for your property 
increases).

We continue the electric field example started in the modules chapter, here
focusing on how we designed the ``ElectricField`` property type. For simplicity
we assume that electric fields arise soley from a collection of point charges
and that users only ever want the value of the electric field at a single point.
In a production quality code those are unlikely to be valid assumptions, but
they suffice for our present purposes.

.. toctree::
   :maxdepth: 2
   :caption: Contents:

   basics
   advanced