Difference between revisions of "Singleton list confusion"
From HaskellWiki
(short introduction) |
(further example, but same author) |
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People sometimes write argument patterns like <hask>[x]</hask>, hoping that <hask>x</hask> will assume all values of a list successively. |
People sometimes write argument patterns like <hask>[x]</hask>, hoping that <hask>x</hask> will assume all values of a list successively. |
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Maybe it is some kind of [[list comprehension]]. |
Maybe it is some kind of [[list comprehension]]. |
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| + | <!-- the first time I saw this in students homework solutions --> |
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See for example |
See for example |
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| + | Haskell-Cafe about |
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| + | [http://www.haskell.org/pipermail/haskell-cafe/2008-April/041496.html testing for same characters in lists of strings], |
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| ⚫ | |||
[[Category:Syntax]] |
[[Category:Syntax]] |
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Revision as of 15:46, 10 April 2008
Why do Haskell newcomers frequently believe, that list variables must be enclosed in brackets?
People sometimes write argument patterns like [x], hoping that x will assume all values of a list successively.
Maybe it is some kind of list comprehension.
See for example Haskell-Cafe about
testing for same characters in lists of strings, Pattern match failure