Loops/Wrong ranges: Difference between revisions
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You don't always have to convert a range to a series explicitly. Since 0.6.15, the functions map(), fold(), foldfrom(), and zip() accept ranges in place of arrays. |
You don't always have to convert a range to a series explicitly. Since 0.6.15, the functions map(), fold(), foldfrom(), and zip() accept ranges in place of arrays. |
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In the following |
In the following example, we could have just started with an array of arrays, but following the Python example, we process the .data string into a table. |
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{{trans|Python}} |
{{trans|Python}} |
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{{works with|langur|0.6.15}} |
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<lang langur>val .data = q:block END |
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start stop increment comment |
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-2 2 1 Normal |
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-2 2 0 Zero increment |
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-2 2 -1 Increments away from stop value |
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-2 2 10 First increment is beyond stop value |
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2 -2 1 Start more than stop: positive increment |
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2 2 1 Start equal stop: positive increment |
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2 2 -1 Start equal stop: negative increment |
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2 2 0 Start equal stop: zero increment |
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0 0 0 Start equal stop equal zero: zero increment |
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END |
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var .table = submatches(RE/([^ ]+) +([^ ]+) +([^ ]+) +(.+)\n?/, .data) |
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for .i in 2..len(.table) { |
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.table[.i] = map(f { if(.i2==4: .s2; toNumber(.s2)) }, 1..4, .table[.i]) |
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} |
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for .test in rest(.table) { |
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var (.start, .stop, .inc, .comment) = .test |
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{ |
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val .series = series(.start to .stop, .inc) |
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catch { |
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writeln $"\.comment;\nERROR: \.err["msg"]:L200(...);\n" |
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} else { |
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writeln $"\.comment;\nresult: \.series;\n" |
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} |
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} |
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}</lang> |
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{{works with|langur|0.7.1}} |
{{works with|langur|0.7.1}} |
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Langur 0.7.0 changed the implicit exception variable from .err to _err, and 0.7.1 allows you to map to multiple functions. |
Langur 0.7.0 changed the implicit exception variable from .err to _err, and 0.7.1 allows you to map to multiple functions. |
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