public UserCoin GetCoin(string coin, string exchange)
{
var userCoinKey = UserCoinKey.Get(coin, exchange);
return(UserCoins.ContainsKey(userCoinKey) ? UserCoins[userCoinKey] : null);
}
public UserCoin(string coin, string exchange)
{
Coin = coin;
Exchange = exchange;
UniqueName = UserCoinKey.Get(Coin, Exchange);
}