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chore(*): bump to lean 3.47.0 (#16252)
A major change is that notations now require names when they are shadowing another identical notation, even if it is a local notation. Also, because localized notations can be imported in a variety of contexts, there are some new best practices for them: * localized notations should always have a `(name := ...)`. Notation names are unrelated to declaration names, but the declaration name is a reasonable base for the notation name. * localized notations should never use `_` in the notation, because this gets desugared to a unique metavariable index, meaning that the notation will not be recognized as a duplicate of itself if `open_locale` is used when the notation is already available. Instead, you should use the `hole!` notation, which unfolds to `_`. Another major change is that projection notation (`x.foo`) now always instantiates implicit arguments with metavariables, which is consistent with Lean 4. To simulate the older behavior, one can use either strict implicit arguments for the structure field (e.g. `∀ {{n}}, p n` instead of `∀ {n}, p n`) or, depending on specifics, writing `λ _, x.foo` to ensure the implicit argument is preserved as an argument. Co-authored-by: Kyle Miller <kmill31415@gmail.com>
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -1,7 +1,7 @@ | ||
[package] | ||
name = "mathlib" | ||
version = "0.1" | ||
lean_version = "leanprover-community/lean:3.46.0" | ||
lean_version = "leanprover-community/lean:3.47.0" | ||
path = "src" | ||
|
||
[dependencies] |
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