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Pack logtalk -- logtalk-3.90.1/examples/lambdas_compiled/NOTES.md

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lambdas_compiled

This is a pseudo-example, based on the lambdas example, that is only used for testing library support for compilation of calls to meta-predicates and lambda expressions that removes the implied overhead making their performance practical and equal or close to the first-order alternatives.

Print Logtalk, Prolog backend, and kernel versions (if running as a notebook):

%versions

Run the tests:

logtalk_load(lambdas_compiled(tester)).

The following lambda benchmarks are so far only available when using SWI-Prolog, Trealla Prolog, XSB, XVM, or YAP as the Logtalk backend compilers:

lambda_benchmarks::bench1.

<!-- Using map/2 with a closure for testing less(0, X) with X in [1..100000]: % 200,003 inferences, 0.015 CPU in 0.018 seconds (83% CPU, 13027814 Lips) Using map/2 with a lambda for testing less(0, X) with X in [1..100000]: % 300,002 inferences, 0.010 CPU in 0.010 seconds (97% CPU, 31059323 Lips)

true. -->

lambda_benchmarks::bench2.

<!-- Adding 1 to every integer in the list [1..100000] using a local add1/2 predicate: % 100,002 inferences, 0.014 CPU in 0.015 seconds (93% CPU, 6909556 Lips) Adding 1 to every integer in the list [1..100000] using map/3 with the integer::plus/3 predicate: % 200,004 inferences, 0.047 CPU in 0.047 seconds (98% CPU, 4296911 Lips) Adding 1 to every integer in the list [1..100000] using map/3 with a lambda argument with a is/2 goal: % 200,002 inferences, 0.019 CPU in 0.019 seconds (98% CPU, 10666204 Lips)

true. -->