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#' Currency symbols
#'
#' Returns a tibble with the symbol and name of all currencies available
#' through the Fixer API.
#'
#' @export
fixer_symbols <- function() {
query <- paste0(fixer_url, "symbols?access_key=", fixer_api_key())
symbols <- fromJSON(query, flatten = TRUE)
symbols <- success_check(symbols)
df <- tibble::enframe(symbols$symbols)
df$value <- as.character(df$value)
df
}
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