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* @-patterns as in Haskell. For instance, in a function definition

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f = args @ {x, y, z}: ...;

  `args' refers to the argument as a whole, which is further
  pattern-matched against the attribute set pattern {x, y, z}.
This commit is contained in:
Eelco Dolstra 2008-08-14 12:53:29 +00:00
parent e818838412
commit 1b962fc720
10 changed files with 106 additions and 46 deletions
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src/libexpr/nixexpr-ast.def
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@ -77,6 +77,7 @@ Scope | | Expr |
VarPat | string | Pattern |
AttrsPat | ATermList | Pattern |
AtPat | Pattern Pattern | Pattern |
Formal | string DefaultValue | ATerm |