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| • | Adjust the Ex,
Nx, Cx according to the way in |
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| which it is used |
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| • | Tree.Exp unEx() |
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| – | Presents
whatever unEx has been called on as a |
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| simple
expression |
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| • | Tree.Stm unNx() |
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| – | Presents
receiver as a statement |
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| • | Tree.Stm
unCx(Temp.Label t, Temp.Label f) |
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| – | Presents
receiver as a conditional statement, passing |
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| control either
to label t or f |
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