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2008 Feb 12
3
matching last argument in function
I often want to temporarily modify the options() options, e.g. a <- seq(10000001, 10000001 + 10) # some wide object with.options <- function(..., expr) { options0 <- options(...) tryCatch(expr, finally=options(options0)) } Then I can use: with.options(width=160, expr = print(a)) But I'd like to avoid explicitly naming the expr argument, as in: with.options(width=160, print(a)) How can I do this with R's argument matching? (I prefer the expr...