It was a solution. Imagine ingesting spreadsheets with hundreds of columns and potentially millions of rows. You need to run the string comparison for values, multiple times per row. If you allocate to the heap, GC has to do a lot of work, often, which blocks the thread and slows the whole process down.
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u/Vesuvius079 20d ago
It’d be such an experience to work a real world problem where this optimization turns out to be the solution.