Number of rows affected by last update
Returns number of rows affected by last := or set().
.Last.updated
Be aware that in the case of duplicate indices, multiple updates occur (duplicates are overwritten);
.Last.updated will include all of the
updates performed, including duplicated ones. See examples.
Integer.
d = data.table(a=1:4, b=2:5) d[2:3, z:=5L] .Last.updated # updated count takes duplicates into account #2837 DT = data.table(a = 1L) DT[c(1L, 1L), a := 2:3] .Last.updated
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