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Diffstat (limited to 'doc/forum/Inherited_Variables.../comment_5_6fbd29f568ec8b97be47874e2aac57a3._comment')
| -rw-r--r-- | doc/forum/Inherited_Variables.../comment_5_6fbd29f568ec8b97be47874e2aac57a3._comment | 20 |
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diff --git a/doc/forum/Inherited_Variables.../comment_5_6fbd29f568ec8b97be47874e2aac57a3._comment b/doc/forum/Inherited_Variables.../comment_5_6fbd29f568ec8b97be47874e2aac57a3._comment new file mode 100644 index 00000000..16819bd6 --- /dev/null +++ b/doc/forum/Inherited_Variables.../comment_5_6fbd29f568ec8b97be47874e2aac57a3._comment @@ -0,0 +1,20 @@ +[[!comment format=mdwn + username="joey" + subject="""comment 5""" + date="2017-02-03T19:32:58Z" + content=""" +What you're looking for is not a regexp, but Haskell's [pattern +matching](https://www.haskell.org/tutorial/patterns.html). + +For example: + + myproperty :: Property Debian + myproperty = withOS "some desc here" $ \w o -> case o of + -- Pattern match on the OS, to get the Debian stable release + (Just (System (Debian _kernel (Stable release)) _arch)) -> + ensureProperty w $ Apt.setSourcesListD (sourcesLines release) "mysources" + _ -> unsupportedOS + + sourcesLines :: Release -> [Line] + sourcesLines release = undefined +"""]] |