Amibroker — Afl Code Verified ((top))

// NOT verified (look-ahead) Buy = Ref( Cross( MACD(), Signal() ), -1 ); // Signals based on NEXT bar? Wait: Ref(..., -1) is past? No: Ref(array, -1) is PREVIOUS bar. Ref(..., +1) is future. Be careful.

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Common Verification Methods

Once the code is verified, the trader's mindset shifts. They no longer trade based on a "feeling" about a candle; they trade based on a . // NOT verified (look-ahead) Buy = Ref( Cross(

Plot(RepaintDetected, "Repaint Error", colorRed, styleOwnScale); if( LastValue( Cum( RepaintDetected ) ) > 0 ) printf("WARNING: repainting detected in %g bars", LastValue(Cum(RepaintDetected))); This link or copies made by others cannot be deleted

Why Verification Matters Trading strategies drive capital allocation; errors in code can produce misleading signals, resulting in financial loss. Verification reduces operational risk by catching bugs, ensuring that historical performance is truly representative, and improving confidence when moving from backtest to live trading. Additionally, verified code enhances collaboration: teammates and third-party reviewers can inspect and reuse scripts without re-implementing or second-guessing the logic.

Unverified code leads to "phantom profits" in backtests that turn into devastating losses in live trading. This comprehensive guide details how to write, debug, optimize, and verify your AmiBroker AFL code to build bulletproof trading systems. 1. What Does "Verified" AmiBroker AFL Code Mean? Verified AFL code meets four strict criteria: