I noticed this when I moved from chained [,:=] to within...
When adding columns, the columns are added in reverse order of the
assignment order, e.g.
DT= data.table(a=1:10, b=2:11)
within(DT,
{
c=a*b
d=a+b
}
)
# d appears before c in the column ordering.
While this isn't a huge deal, it is annoying as I often create data.tables
with many columns and the ordering is intentional, to make the data easier
to read.
Is this a bug?
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