Victor Shepelev

I recommend to look at [ChunkyPNG](https://github.com/wvanbergen/chunky_png)'s approach, at least at the beginning. Their speed-up extension, [OilyPNG](https://github.com/wvanbergen/oily_png) is distributed as a separate gem, that just replaces some performance-critical methods with compiled...

@v0dro is there a real life reason for this functionality, in the first place?

Yes, I understand why we need the test, if functionality exists. But my question is WHY the functionality exists?

Got it, thanks :+1:

I believe it is due to the fact that currently `group_by` for some reason sorts groups, and booleans can't be compared with ``. This redesign ticket is somehow related: https://github.com/SciRuby/daru/issues/152

To the best of my knowledge, the answer is as follows. **Short answer:** yes, seems nobody to work on the project actively at the time. **Long answer:** The library was...

_Just to add one more variety to already existing list of opinions!_ I believe there are two, not really related questions about "dataframe implementation" in Ruby: 1. Interface (as in...

@jonspalmer It is hard for me to answer the questions in details: both technically, because I haven't been involved with Daru for ~2 years now, and ethically, as a lot...

@jonspalmer I believe you seriously underestimate the design space (and how design decisions affect the library's usability). Let's stick just to one example of two parts (it is just to...

Probably, the work should be done on some `daru-1.0` branch, and (as GitHub allows it) PRs on the road should be merged there, not in master?.. Or master would became...