lix -

Age	Commit message (Collapse)	Author
2013-10-24	Rename "attribute sets" to "sets"	Eelco Dolstra
	We don't have any other kind of sets so calling them attribute sets is unnecessarily verbose.
2013-10-08	printStats(): Print the size of the symbol table in bytes	Eelco Dolstra

2013-05-16	Show function names in error messages	Eelco Dolstra
	Functions in Nix are anonymous, but if they're assigned to a variable/attribute, we can use the variable/attribute name in error messages, e.g. while evaluating `concatMapStrings' at `/nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/pkgs/lib/strings.nix:18:25': ...
2012-07-18	Use "#pragma once" to prevent repeated header file inclusion	Eelco Dolstra

2010-10-24	* Store attribute sets as a vector instead of a map (i.e. a red-black	Eelco Dolstra
	tree). This saves a lot of memory. The vector should be sorted so that names can be looked up using binary search, but this is not the case yet. (Surprisingly, looking up attributes using linear search doesn't have a big impact on performance.) Memory consumption for $ nix-instantiate /etc/nixos/nixos/tests -A bittorrent.test --readonly-mode on x86_64-linux with GC enabled is now 185 MiB (compared to 946 MiB on the trunk).
2010-10-04	* If std::tr1::unordered_set is unavailable, use std::set.	Eelco Dolstra

2010-04-13	* Use std::tr1::unordered_set instead of std::set for the symbol	Eelco Dolstra
	table. This gives a 10% speed increase on `nix-instantiate /etc/nixos/nixos -A system --readonly-mode'.
2010-04-13	* Use a symbol table to represent identifiers and attribute names	Eelco Dolstra
	efficiently. The symbol table ensures that there is only one copy of each symbol, thus allowing symbols to be compared efficiently using a pointer equality test.