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cynkra / constructive

Display Idiomatic Code to Construct Most R Objects
https://cynkra.github.io/constructive
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compress repeated value #470

Closed ggrothendieck closed 3 months ago

ggrothendieck commented 4 months ago

In this example we did not need rep. It could have been written demand = 1 .

BOD$demand <- 1
construct(BOD)
## data.frame(Time = c(1, 2, 3, 4, 5, 7), demand = rep(1, 6L)) |>
##  structure(reference = "A1.4, p. 270")
moodymudskipper commented 4 months ago

Fair point. We can recycle constant columns, If all columns are constant we can recycle only from the 2nd column however, even if row names are provided.

Since compression is an attribute of atomic vector construction and we're with data frames I would make it permanent, not dependent on compress = TRUE.

We could also be clever by recycling vectors of length > 1 but in that case I think rep() is better.