Markus Himmel d6cd738ab4 feat: redefine String, part two (#10457) ... This PR introduces safe alternatives to `String.Pos` and `Substring` that can only represent valid positions/slices. Specifically, the PR - introduces the predicate `String.Pos.IsValid`; - proves several nontrivial equivalent conditions for `String.Pos.IsValid`; - introduces `String.ValidPos`, which is a `String.Pos` with an `IsValid` proof; - introduces `String.Slice`, which is like `Substring` but made from `String.ValidPos` instead of `Pos`; - introduces `String.Pos.IsValidForSlice`, which is like `String.Pos.IsValid` but for slices; - introduces `String.Slice.Pos`, which is like `String.ValidPos` but for slices; - introduces various functions for converting between the two types of positions. The API added in this PR is not complete. It will be expanded in future PRs with addional operations and verification.		2025-09-24 13:36:55 +00:00
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bench	chore: update bench/riskv-ast.lean (#10505)	2025-09-24 11:46:26 +00:00
compiler	chore: remove >6 month old deprecations (#10446)	2025-09-22 12:47:11 +00:00
elabissues
ir
lean	feat: redefine String, part two (#10457)	2025-09-24 13:36:55 +00:00
pkg	feat: list definitions in defeq problems that could not be unfolded for lack of @[expose] (#10158)	2025-09-23 16:13:39 +00:00
playground	feat: linear-size DecidableEq instance (#10152)	2025-09-03 06:31:49 +00:00
plugin
simpperf
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common.sh
lakefile.toml
lean-toolchain