dfd2a23cd4
The new notation is the same one used in Standard ML. It will also allow us to use ' in the beginning of identifiers like Standard ML.
26 lines
467 B
Text
26 lines
467 B
Text
check ({1, 2, 3} : set nat)
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check ({1} : set nat)
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check ({} : set nat)
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definition s1 : set nat := {1, 2+3, 3, 4}
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print s1
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definition s2 : set char := {#"a", #"b", #"c"}
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print s2
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definition s3 : set string := {"hello", "world"}
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print s3
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check { a ∈ s1 | a > 1 }
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check { a in s1 | a > 1 }
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set_option pp.unicode false
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check { a ∈ s1 | a > 2 }
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definition a := 10
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check ({a, a} : set nat)
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check ({a, 1, a} : set nat)
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check ({a} : set nat)
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check { a // a > 0 }
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