Syntax

exchange.IO("currency", ...)

Switches the current trading pair of the exchange object at runtime.


    
    
    
exchange.IO(k, symbol)

Examples

Switch trading pair at runtime.


    javascript
    
    
function main() {
    // For example, when the live bot starts, the exchange object's current trading pair is BTC_USDT; print the ticker of the current trading pair
    Log(exchange.GetTicker())
    // Switch the trading pair to LTC_BTC
    exchange.IO("currency", "LTC_BTC")
    Log(exchange.GetTicker())
}


    python
    
    
def main():
    Log(exchange.GetTicker())
    exchange.IO("currency", "LTC_BTC")
    Log(exchange.GetTicker())


    rust
    
    
fn main() {
    // For example, when the live bot starts, the exchange object's current trading pair is BTC_USDT; print the ticker of the current trading pair
    Log!(exchange.GetTicker(None));
    // Switch the trading pair to LTC_BTC
    let _ = exchange.IO(("currency", "LTC_BTC"));
    Log!(exchange.GetTicker(None));
}

Returns

Type	Description
bool / null value	Returns `true` on success; returns a null value if the trading pair format is invalid, and the current trading pair stays unchanged.

Arguments

Name	Type	Required	Description
k	string	Yes	Selects the `exchange.IO()` feature; `currency` switches the trading pair.
symbol	string	Yes	Trading pair, upper case and underscore-separated, e.g. `ETH_USDT`.

Switching Trading Pairs at Runtime (`currency` mode)


            javascript
            
            

exchange.IO("currency", "ETH_USDT")

Used to dynamically switch trading pairs at runtime. The trading pair format is uppercase letters separated by an underscore. This instruction is equivalent to exchange.SetCurrency.

In backtesting mode, only spot is supported, and you can only switch to a trading pair with the same quote currency. For futures, the contract code is kept after switching the trading pair; call exchange.SetContractType() when you need a different contract.

exchange.IO("currency", ...)

Switching Trading Pairs at Runtime (currency mode)

Switching Trading Pairs at Runtime (`currency` mode)