Doubly-linked list/Element definition: Difference between revisions
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(→{{header|Kotlin}}: Updated example see https://github.com/dkandalov/rosettacode-kotlin for details) |
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With that, 'cddr' can be used to access the next, and 'cadr' to access the |
With that, 'cddr' can be used to access the next, and 'cadr' to access the |
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previous element. |
previous element. |
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<lang PicoLisp> |
<lang PicoLisp> |
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(de |
(de 2head (X DLst) |
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(let L (car DLst) # Get current data list |
(let L (car DLst) # Get current data list |
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(set DLst (cons X NIL L)) # Prepend two new cons pairs |
(set DLst (cons X NIL L)) # Prepend two new cons pairs |
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# We prepend 'not' to the list in the previous example |
# We prepend 'not' to the list in the previous example |
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( |
(2head 'not *DLst)</lang> |
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For output of the example data, see [[Doubly-linked list/Traversal#PicoLisp]]. |
For output of the example data, see [[Doubly-linked list/Traversal#PicoLisp]]. |
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