This function lets the user download historical currency exchange rate between two currencies.
Examples
# \donttest{
# For today (or any one single date)
get_currency("USD/COP", from = Sys.Date())
#> date rate
#> 1 2026-03-14 3697.43
# For multiple dates
get_currency("EUR/USD", from = Sys.Date() - 7, fill = TRUE)
#> date rate
#> 1 2026-03-08 1.152565
#> 2 2026-03-09 1.152565
#> 3 2026-03-10 1.161669
#> 4 2026-03-11 1.161319
#> 5 2026-03-12 1.154175
#> 6 2026-03-13 1.152220
#> 7 2026-03-14 1.152220
#> 8 2026-03-15 1.152220
# }
