[R-Forge #1440] Should .BY be class data.table to save data.table() call when i is list?

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Assessment

Difficulty
5/5
Estimated time
Over a week
Newbie friendliness
20/100
Issue type
Feature
Clarity
Needs clarification
Activity status
Stale
Tech stack
r
Domain
data

Research direction

The issue does not name any files, tests, or entry points. Start by locating the implementation and tests for .BY and its list behavior, then clarify whether changing its class is wanted and which indexing forms must remain supported.

Written by the indexing model from the issue text.

Description

feature request

Submitted by: Matt Dowle; Assigned to: Nobody; R-Forge link

The reason maybe not is that .BY[1:2] might be nice, when .BY is list. Might be more onerous to do .BY[,1:2,with=FALSE].
Probably .BY used as a whole more often?

Dominant language
R
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Merged PRs (30d)
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