Add description for Range #952
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Merge remote-tracking branch 'origin/master' into fix-range
mathics/builtin/list/constructing.py
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| @@ -213,6 +213,12 @@ class Range(Builtin): | |||
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| <dt>'Range[$a$, $b$]' | |||
| <dd>returns a list of integers from $a$ to $b$. | |||
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| <dt>'Range[$a$, $b$, $di$]' | |||
| <dd>returns a list of integers from $a$ to $b$ using step $di$. | |||
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Not only integers but appropriate values.
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Thanks for your suggestion. Do you think the current one is better, or simply returns a list of numbers from $a$ to $b$.?
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Not only numbers if you see this example:
Together can help to simplify the expressions generated by the iterator to real values:
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However, Range in Mathics3 only accepts real arguments for now. For some historical reason it does not use the same implementation as Table, which makes it more efficient while having more limited applicability.
Anyway, your suggestion sounds good and I think it's worth considering in our future reorganization of historical codes including Range. Would you mind putting your suggestions to Issues? That way we can remember it after this PR is closed (which could be soon since I don't have time to rewrite Range in this PR for now).
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I think you can better add details in an issue, how to use the Table iterator implementation for Range.
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This change is a correction and improvement as is. Please feel free to open issues or features in the issue/feature part of github. |
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