Undefined values: Difference between revisions
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→{{header|Haskell}}: "1/0" -> "1 `div` 0"
Underscore (talk | contribs) (Added Haskell.) |
Underscore (talk | contribs) m (→{{header|Haskell}}: "1/0" -> "1 `div` 0") |
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This isn't quite as dangerous as it sounds because of Haskell's laziness. For example, this program:
<lang haskell>main = print $ length [undefined, undefined, 1
prints <code>3</code>, since <code>length</code> doesn't need to evaluate any of the elements of its input.
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