[Nix-dev] Nix 1.2 released

[Florian Friesdorf]

Andres Loeh <ksnix at andres-loeh.de> writes:
> Why don't you just try it?
>
> $ echo 'let lib = import <nixpkgs/pkgs/lib/default.nix>; in lib.elem 1
> [1 2 (throw "boo")]' | nix-instantiate --eval-only -
> true
> $ echo 'let lib = import <nixpkgs/pkgs/lib/default.nix>; in lib.elem 2
> [1 2 (throw "boo")]' | nix-instantiate --eval-only -
> true
> $ echo 'let lib = import <nixpkgs/pkgs/lib/default.nix>; in lib.elem 3
> [1 2 (throw "boo")]' | nix-instantiate --eval-only -
> error: user-thrown exception: boo
>
> Seems lazy to me.

Thanks Andres and Shea for the explanations.

At this point I definitely get that elem is lazy. I'm a bit confused
about the direction fold(right) is working, but will play with it a bit
before asking further questions.

thanks again!

-- 
Florian Friesdorf <flo at chaoflow.net>
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