Jamie Balfour

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LAME X2 - a huge improvement

LAME X2 - a huge improvement

ZPE 1.12.2 will be released later today with LAME X2. LAME X2 was conceptualised at the end of 2023 with a completely different thought process to how it ended up.

LAME X2 was initially planned to be lazy in evaluation, putting more strain on the compiler to perform some form of evaluation/optimisation on expressions rather than leaving it to runtime. This wasn't the best way to go about it. I devised a better way after sitting down with pen and paper this morning.

This new way of doing it leaves LAME as a runtime evaluator rather than what LAMP was that proceeded LAME. LAME X2 is now up to 4 times faster for larger sums. Check these figures for evaluating the sum '3 * (5 + 2) / 2 ^ 2' and displaying the result 100,000 times:

LAME: 14.37s user 2.62s system 114% cpu 14.775 total

LAME X2: 10.40s user 2.04s system 120% cpu 10.362 total

Counting on my Watch, I also got much lower figures with X2 compared with the original. 

The new version is experimental and will be bundled with ZPE. It can also be disabled, at least for now, using the property USE_OLD_LAME and setting it to true.

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