Keep a downloaded price history on disk — keep_history • golemcrypto

A history with missing days (see has_gaps()) is returned but not kept, so the next call downloads it again.

Usage

keep_history(key, history, from)

Arguments

key: Key of the coin in disk_cache().
history: Price history of the coin, or NULL when the download failed.
from: Date. The first day asked for, which can be earlier than the first day of the coin.

Value

A list with the history, from and the time of the download, or NULL when history is NULL.

Examples

if (FALSE) { # \dontrun{
coins <- get_coins()
btc <- coins[coins$name_symbol == "Bitcoin (BTC)", ]
crypto:::keep_history("history_1", crypto:::download_history(btc, Sys.Date() - 30), Sys.Date() - 30)
} # }