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option
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,