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by bjoli
2096 days ago
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The other comment mentions computed Goto's. I have used those with big success when writing streaming parsers that work per-char (like a typical JSON or csv-parser). I can't remember exactly, but I think switching from a switch statement to computed gotos cut something like 10% from execution time due to better branch predictions in the CPU. That is pretty huge, considering it was a pretty small change to the char dispatch. |
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