4f2e0c6d7f
The new command provides a uniform way to set declaration attributes. It replaces the commands: class, instance, coercion, multiple_instances, reducible, irreducible
31 lines
635 B
Text
31 lines
635 B
Text
prelude
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precedence `+`:65
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namespace nat
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constant nat : Type.{1}
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constant add : nat → nat → nat
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infixl + := add
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end nat
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namespace int
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open nat (nat)
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constant int : Type.{1}
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constant add : int → int → int
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infixl + := add
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constant of_nat : nat → int
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persistent attribute of_nat [coercion]
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end int
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open int
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open nat
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constants n m : nat
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constants i j : int
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check n + m
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check i + j
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check i + n
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check i + n + n + n + n + n + n + n + n + n + n + n +
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n + n + n + n + n + n + n + n + n + n + n + n +
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n + n + n + n + n + n + n + n + n + n + n + n +
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n + n + n + n + n + n + n + n + n + n + n + n
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