Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
6d926c7989
see #371 This commit does not implement all features discussed in this issue. It has implemented it as a macro expansion. Thus, the following is accepted ```lean inductive StrOrNum where | S (s : String) | I (i : Int) def StrOrNum.asString (x : StrOrNum) := match x with | I a | S a => toString a ``` It may confuse the Lean LSP server. The `a` on `toString` shows the information for the first alternative after expansion (i.e., `a` is an `Int`). After expansion, we have ``` def StrOrNum.asString (x : StrOrNum) := match x with | I a => toString a | S a => toString a ``` |
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This is the repository for Lean 4, which is currently being released as milestone releases towards a first stable release. Lean 3 is still the latest stable release.
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