求解OnCalculate中的“prev_calculated”是什么意思
请问一下:OnCalculate中,“prev_calculated”是什么意思
int OnCalculate(const int rates_total,
const int prev_calculated,
const datetime &time[],
const double &open[],
const double &high[],
const double &low[],
const double &close[],
const long &tick_volume[],
const long &volume[],
const int &spread[])
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