Export Symbol contract into HtDP teaching languages.
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@ -60,7 +60,7 @@
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empty true false
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contract : -> mixed one-of predicate combined
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Number Real Rational Integer Natural Boolean True False String Char Empty-list
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Number Real Rational Integer Natural Boolean True False String Symbol Char Empty-list
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property)
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;; procedures:
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@ -44,7 +44,7 @@
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empty true false
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contract : -> mixed one-of predicate combined
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Number Real Rational Integer Natural Boolean True False String Char Empty-list
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Number Real Rational Integer Natural Boolean True False String Symbol Char Empty-list
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property)
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;; procedures:
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@ -45,7 +45,7 @@
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empty true false
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contract : -> mixed one-of predicate combined
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Number Real Rational Integer Natural Boolean True False String Char Empty-list
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Number Real Rational Integer Natural Boolean True False String Symbol Char Empty-list
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property)
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(require (for-syntax "private/firstorder.ss"))
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@ -48,7 +48,7 @@
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empty true false
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contract : -> mixed one-of predicate combined
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Number Real Rational Integer Natural Boolean True False String Char Empty-list
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Number Real Rational Integer Natural Boolean True False String Symbol Char Empty-list
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property)
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;; procedures:
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@ -48,7 +48,7 @@
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empty true false
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contract : -> mixed one-of predicate combined
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Number Real Rational Integer Natural Boolean True False String Char Empty-list
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Number Real Rational Integer Natural Boolean True False String Symbol Char Empty-list
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property)
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;; procedures:
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