Pascal's triangle: Difference between revisions
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(→using a lazy sequence generator: show a version with implicit $_, which I think looks better in this case.) |
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The following routine returns a lazy list of lines using the sequence operator (<tt>...</tt>). With a lazy result you need not tell the routine how many you want; you can just use a slice subscript to get the first N lines: |
The following routine returns a lazy list of lines using the sequence operator (<tt>...</tt>). With a lazy result you need not tell the routine how many you want; you can just use a slice subscript to get the first N lines: |
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<lang perl6>sub pascal { |
<lang perl6>sub pascal { |
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[1], { [0, |$_ Z+ |$_, 0] } ... * |
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} |
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.say for pascal[^10];</lang> |
.say for pascal[^10];</lang> |
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