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@@ -289,7 +289,7 @@ Equality of constants is a bit different, and is checked as follows:
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(slot-value expression 'name)))
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#+END_SRC
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-** WORKING Compound Types [1/7]
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+** WORKING Compound Types [2/7]
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:PROPERTIES:
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:ID: a0d2eb19-8a1e-4dee-9b41-c454a49cacc4
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:END:
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@@ -337,7 +337,8 @@ CLOSED: [2019-01-17 Thu 09:53]
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(slot-value expression 'terms))))
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#+END_SRC
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-*** WORKING Subtractions
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+*** DONE Subtractions
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+CLOSED: [2019-01-17 Thu 10:01]
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:PROPERTIES:
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:ID: aad16971-81c8-48da-aaa5-bb84b03d6912
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:END:
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@@ -362,6 +363,10 @@ Subtractions again, contain only a list of terms. However, unlike other types h
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(a a-terms (rest a))
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(b b-terms (rest b)))
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((or (not keep) (null a) (null b)) keep)))))
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+
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+ (defmethod to-sexp ((expression <subtraction>) &optional resolve-constants-p)
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+ `(- ,@(mapcar #'(lambda (exp) (to-sexp exp resolve-constants-p))
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+ (slot-value expression 'terms))))
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#+END_SRC
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*** WORKING Multiplications
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