[R-Forge #1458] Add fast insert() function
@ben-schwen is already working on this.
Since Jul 3, 2026.
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Description
Submitted by: Matt Dowle; Assigned to: Nobody; R-Forge link
insert(DT, list(...))
and
insert(DT, ...)
This would grow DT, and memcpy the value in.
Possibly, even respecting keys, and doing a memmove to make space.
Related, tables() could report length and truelength separately. There could be an allocate(DT,n) function which increases truelength but not the length (allowing many quick insert()s if user knows that is about to happen).
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