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Usedplyr verbs, as well as custom ones, to builddata.tableexpressions. Check thevignettefor more information.

The basic idea is to parse the input from all the verbs and create asingle expression that, after evaluation, simply delegates all theactual computations todata.table, letting it handle all optimizationsas usual.

# the expression is what matters here, input is left emptydata.table() %>%start_expr %>%    select(col) %>%    where(var==val) %>%    order_by(v)#> .DT_[var == val, list(col)][order(v)]

The inputdata.table is always assigned in the evaluation’senvironment as the.DT_ pronoun

In many cases character input can also be supported, which could beuseful for other packages that usedata.table.

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This software package was developed independently of any organization orinstitution that is or has been associated with the author.