Created
September 8, 2023 14:11
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| # https://fosstodon.org/@coolbutuseless/111029564256521659 | |
| x <- letters | |
| x <- structure(letters, class = "zero_indexed") | |
| `[.zero_indexed` <- function(obj, i, ...) { | |
| if (is.numeric(i)) { | |
| i <- i + 1 | |
| NextMethod() | |
| } else if (is.character(i)) { | |
| x[setNames(0:(length(x)-1), x)[i]] | |
| } | |
| } | |
| x[0] | |
| x[25] | |
| x[c("a", "z")] |
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