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authorEelco Dolstra <e.dolstra@tudelft.nl>2006-09-22 14:46:36 +0000
committerEelco Dolstra <e.dolstra@tudelft.nl>2006-09-22 14:46:36 +0000
commitc02a44183fcff7c28cfed1c84c142cc2cf80f167 (patch)
treea22e8e94ab228480141ece3354c7c91602b5a47b /src/libexpr/eval.hh
parent8a1ab709a47f0896cb5b47521e31c8c27f88b2b3 (diff)
downloadguix-c02a44183fcff7c28cfed1c84c142cc2cf80f167.tar.gz
* Builtin functions `head' and `tail' to return the head and tail of
  list.  Useful for lots of things, such as implementing a fold
  function (see NIX-30, example is in tests/lang/eval-okay-list.nix).

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