| Unification and lists 2 |
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| You are advised to write down the solutions for
all questions before you look at the answers. |
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Do the following unify and (if so) what are the variable instantiations?
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1.
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| ?- Var = [1, 2, 3]. |
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2.
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| ?- Var = [Head, Tail]. |
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3.
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| ?- [_|Tail] = Var. |
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4.
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| ?- [Head|Tail] = [Head|Tail]. |
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5.
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| ?- [Hd1, Hd2|LH_Tail] = [Head|RH_Tail]. |
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6.
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| ?- [LH_Hd1, LH_Hd2, LH_Hd3] = [RH_Hd1,
RH_Hd2, RH_Hd3|Tail]. |
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Describe what will happen if you attempt the following and
why it will happen: |
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1.
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| ?- S = [_|S]. |
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2.
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| ?- [Hd1, Hd2|Tail] = [Head|Tail]. |
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3.
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| ?- [Head, Tl] = [Head|Tl]. |
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