Alexander Plavin

@SylvainCorlay and why `observe('foo.bar')` instead of `foo.observe('bar')` which would remain consistent with other parts?

@SylvainCorlay as for your point 2. - why implement the feature to observe several traits when Python natively allows for this? I mean why not just write (assuming the decorator...

> Many types of arrays exist that support similar but not push! or append!. Are there actually types that return non-pushable arrays from `similar`? For example, both Base ranges and...

Still, are there any actual types whose `similar` output cannot be pushed to? `emptymutable` would be more useful if it also allowed something else, something that cannot be just as...

Out of general principles, it seems more optimal to have fewer general functions that easily compose (`group` + `map` in your example) compared to a larger number of specialized functions...

`(3:4) + zero(3:4) == (3:4)`, so it can definitely be considered a neutral element. If you want to require `typeof(zero(x) + x) == typeof(x)` for some reason, then `zero` methods...

version is fine

version is fine

version is fine

version is fine