Doubly-linked list/Element definition: Difference between revisions
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(→E: crosslink, lang tag) |
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=={{header|E}}== |
=={{header|E}}== |
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This does no type-checking, under the assumption that it is being used by a containing doubly-linked list object which enforces that invariant along with others such as that <code>element.getNext().getPrev() == element</code>. |
This does no type-checking, under the assumption that it is being used by a containing doubly-linked list object which enforces that invariant along with others such as that <code>element.getNext().getPrev() == element</code>. See [[Doubly-Linked List#E]] for an actual implementation (which uses slightly more elaborate nodes than this). |
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<lang e> def makeElement(var value, var next, var prev) { |
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def element { |
def element { |
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to setValue(v) { value := v } |
to setValue(v) { value := v } |
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to getValue() { return value } |
to getValue() { return value } |
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to setNext(n) { next := n } |
to setNext(n) { next := n } |
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to getNext() { return next } |
to getNext() { return next } |
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to setPrev(p) { prev := p } |
to setPrev(p) { prev := p } |
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to getPrev() { return prev } |
to getPrev() { return prev } |
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return element |
return element |
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} |
}</lang> |
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=={{header|Fortran}}== |
=={{header|Fortran}}== |
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