map and filter Functionality

[shenoynikhil]

Two interesting functionalities for datasets,

• .map(function) which maps a function to every element in the dataset. Kind of like transform. Reference
• .filter() which only returns objects that satisfy a particular condition. Referece

[FNTwin]

because of the datastructure that we currently have, I see limited functionality on the map function as most likely you would prefer to use transform directly on the final data object.
As previously discussed in other meetings, I see the filter function as a must have for the release even with a really basic (and limited) implementation.