| Quellcodebibliothek Statistik Leitseite products/Sources/formale Sprachen/Isabelle/Tools/SML/ (Isabelle Prover Version 2025-1©) Datei vom 16.11.2025 mit Größe 1 kB |
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Quelle Examples.thySprache: Isabelle |
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(* Title: Tools/SML/Examples.thy Author: Makarius *) section ‹Standard ML within the Isabelle environment› theory Examples imports Pure begin text ‹ Isabelle/ML is a somewhat augmented version of Standard ML, with various add-ons that are indispensable for Isabelle development, but may cause conflicts with independent projects in plain Standard ML. The Isabelle/Isar command 🚫‹SML_file› supports official Standard ML within the Isabelle environment, with full support in the Prover IDE (Isabelle/jEdit). Here is a very basic example that defines the factorial function and evaluates it for some arguments. › SML_file ‹factorial.sml› text ‹ The subsequent example illustrates the use of multiple 🚫‹SML_file› commands to build larger Standard ML projects. The toplevel SML environment is enriched cumulatively within the theory context of Isabelle --- independently of the Isabelle/ML environment. › SML_file ‹Example.sig› SML_file ‹Example.sml› text ‹ Isabelle/ML and SML share a common run-time system, but the static environments are separate. It is possible to exchange toplevel bindings via separate commands like this. › SML_export ‹val f = factorial› ― ‹re-use factorial from SML environment› ML ‹f 42› SML_import ‹val println = Output.writeln› ― ‹re-use Isabelle/ML channel for SML› SML_import ‹val par_map = Par_List.map› ― ‹re-use Isabelle/ML parallel list combinator for SML› end
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2026-07-09