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Eelco Dolstra 37d7abd694 * New language feature: with expressions.
The expression `with E1; E2' evaluates to E2 with all bindings in
  the attribute set E1 substituted.  E.g.,

    with {x = 123;}; x

  evaluates to 123.  That is, the attribute set E1 is in scope in E2.

  This is particularly useful when importing files containing lots
  definitions.  E.g., instead of

    let {
      inherit (import ./foo.nix) a b c d e f;

      body = ... a ... f ...;
    }

  we can now say

    with import ./foo.nix;

    ... a ... f ...

  I.e., we don't have to say what variables should be brought into scope.
2004-10-25 16:54:56 +00:00
..
builder.pl.in * New language feature: with expressions. 2004-10-25 16:54:56 +00:00
default.nix * nix-env: a tool to manage user environments. 2003-11-19 17:27:16 +00:00
Makefile.am * Make perl a dependency of Nix. 2004-03-15 15:23:53 +00:00