alloc.col now also as setalloccol

[jangorecki]

closes #3475

[codecov]

Codecov Report

Merging #3792 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3792   +/-   ##
=======================================
  Coverage   99.41%   99.41%           
=======================================
  Files          71       71           
  Lines       13197    13197           
=======================================
  Hits        13120    13120           
  Misses         77       77

Impacted Files	Coverage Δ
R/data.table.R	100% <ø> (ø)	⬆️

---

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[codecov]

Codecov Report

Merging #3792 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master    #3792   +/-   ##
=======================================
  Coverage   99.41%   99.41%           
=======================================
  Files          71       71           
  Lines       13244    13244           
=======================================
  Hits        13167    13167           
  Misses         77       77

Impacted Files	Coverage Δ
src/dogroups.c	96.97% <ø> (ø)	⬆️
R/fread.R	100% <100%> (ø)	⬆️
R/as.data.table.R	100% <100%> (ø)	⬆️
R/data.table.R	100% <100%> (ø)	⬆️
src/assign.c	100% <100%> (ø)	⬆️
R/setkey.R	100% <100%> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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