1d66ff8231
Fixes a long-standing bug in the the `sorryAx` app unexpander that prevented it from applying. Now `sorry` pretty prints as `sorry`.
78 lines
2.1 KiB
Text
78 lines
2.1 KiB
Text
universe u
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/--
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error: numerals are data in Lean, but the expected type is a proposition
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True : Prop
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-/
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#guard_msgs in
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#check (1 : True)
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/--
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error: numerals are data in Lean, but the expected type is universe polymorphic and may be a proposition
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α : Sort u
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-/
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#guard_msgs in
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def f (α : Sort u) : α :=
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1
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/--
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error: numerals are data in Lean, but the expected type is universe polymorphic and may be a proposition
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α : Sort u
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---
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info: fun {α} => id (id sorry) : {α : Sort u} → α
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-/
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#guard_msgs in
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#check fun {α : Sort u} => id (α := α) (id 0)
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/--
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error: numerals are data in Lean, but the expected type is a proposition
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Nat → True : Prop
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-/
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#guard_msgs in
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#check (1 : ∀ (n : Nat), True)
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/--
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error: failed to synthesize
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OfNat String 1
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numerals are polymorphic in Lean, but the numeral `1` cannot be used in a context where the expected type is
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String
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due to the absence of the instance above
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Additional diagnostic information may be available using the `set_option diagnostics true` command.
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-/
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#guard_msgs in
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#check (1 : String)
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/--
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error: failed to synthesize
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OfNat Bool 1
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numerals are polymorphic in Lean, but the numeral `1` cannot be used in a context where the expected type is
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Bool
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due to the absence of the instance above
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Additional diagnostic information may be available using the `set_option diagnostics true` command.
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-/
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#guard_msgs in
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#check (1 : Bool)
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/--
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error: failed to synthesize
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OfNat (Bool → Nat) 1
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numerals are polymorphic in Lean, but the numeral `1` cannot be used in a context where the expected type is
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Bool → Nat
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due to the absence of the instance above
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Additional diagnostic information may be available using the `set_option diagnostics true` command.
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-/
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#guard_msgs in
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#check (1 : Bool → Nat)
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/--
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error: failed to synthesize
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OfNat String 0
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numerals are polymorphic in Lean, but the numeral `0` cannot be used in a context where the expected type is
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String
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due to the absence of the instance above
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Additional diagnostic information may be available using the `set_option diagnostics true` command.
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-/
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#guard_msgs in
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def foo : String :=
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let x := 0
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x ++ x
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