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Merge pull request #204 from dubek/guide-step2-addition

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process/guide: add vector and hash-map evaluation in step 2
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Joel Martin 2016-04-27 20:04:22 -05:00
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process/guide.md
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@ -543,6 +543,16 @@ make "test^quux^step2"
You now have a simple prefix notation calculator!
#### Deferrable:
* `eval_ast` should evaluate elements of vectors and hash-maps. Add the
following cases in `eval_ast`:
* If `ast` is a vector: return a new vector that is the result of calling
`EVAL` on each of the members of the vector.
* If `ast` is a hash-map: return a new hash-map which consists of key-value
pairs where the key is a key from the hash-map and the value is the result
of calling `EVAL` on the corresponding value.
<a name="step3"></a>