How can I optimize VBA code for comparing large lists in Excel
This article details strategies for optimizing VBA code in Excel list comparisons, focusing on the Scripting Dictionary method which reduces processing time from hours to minutes. It covers key optimization techniques including using arrays instead of ranges, disabling screen updates, and efficient memory management for large workbooks (30MB+). The text compares three approaches - Dictionary (best for unique values), Arrays (10x faster than ranges), and Range operations (for small datasets) - with a complete code implementation that demonstrates how these optimizations can reduce processing time from 17 to 2 minutes for large datasets.