TODOs.md

In PeteHaitch/DSArray: Compressed In-Memory Representation of 3-Dimensional Arrays That Contain Many Duplicate Slices

Miscellaneous TODOs

• Use example data to profile functionality (with profvis)
• Write a summary,DSArray-method

Things that work for arrays but don't yet for DSArrays

This is a non-exhaustive list, see 'API and Supported Methods' section of ?DSArray for some discussion of this topic.

• order(), sort()
• order() errors out since it calls the inherited method, which is ill-defined for DSArray objects
• sort() is not an endomorphism on arrays; the dimensionality of the input is lost and an atomic vector is returned
• mean
• see https://github.com/Bioconductor-mirror/S4Vectors/blob/master/R/Rle-utils.R
• rowSums(), colSums()
• [ ] Other row*() an col*() functions; see matrixStats

There are probably many more; how to find list of these (showMethods(classes = "array") is too broad of a search)?

Current implementation vs. hash map

Pros of current implementation

• val is stored in contiguous memory
• Get fast summaries of range

Cons of current implementation - Less flexible than hash map

Questions of current implementation - Is densification faster?

PeteHaitch/DSArray documentation built on May 8, 2019, 1:30 a.m.