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Short answer; Yes, it is possible to look forward by mistake.
You can use the "Code Check & Profile" menu item from the Tools menu of the Code Editor to do a quick look for future leaks. This can give false positives and may not cover custom looping and jscript.
Typical functions that lead to future leaks include LastValue and Ref (when using a positive argument).
Plot your signals on your chart, then scroll the chart. If you start seeing signals change, chances are you've got a future leak. Once your happy with a backtest, it is a good idea to go through every trade by hand and verify that the information to enter/exit the trade was actually available on the dates that the backtest entered/exited.
Mike
--- In amibroker@xxxxxxxxxxxxxxx, "shakerlr" <ljr500@xxx> wrote:
>
> Just wondering. I'm having some (not all) pretty good results with the backtester and my strategies. I was wondering, if I may be "forward looking" because of a bug in my code and my strategies are not as good as they seem, because of my programming?
>
> I try to avoid this by triggering all buy/sell signals at the open of the NEXT bar with:
>
> SetTradeDelays(1,1,1,1);
>
> Should this be sufficient enough (IGNORING any slippage for now).
>
> The strategies are complicated with look back periods etc. I just don't want to "look forward" by mistake.
>
> What I am really asking is, if AmiBroker will "help" prevent these type of look forward errors by never allowing me to look at a bar ahead of the current bar by mistake.
>
> Thanks.
>
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