Loops
Pandas and Polars perform array-based vectorized loop operations internally. Hard-coding indices is not valid in real trading systems because data sizes are not known at write time. Loops let code operate over arrays whose size is not know…
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Pandas and Polars perform array-based vectorized loop operations internally. Hard-coding indices is not valid in real trading systems because data sizes are not known at write time. Loops let code operate over arrays whose size is not known in advance. Manual cumulative P&L summation builds intuition for vectorized operations in pandas and Polars.