wroclaw-git-backups/nix
1
0
Fork 0
mirror of https://github.com/NixOS/nix synced 2025-06-27 16:51:15 +02:00
Code Activity

Introduce builtins.groupBy primop

Browse source 
This function is very useful in nixpkgs, but its implementation in Nix
itself is rather slow due to it requiring a lot of attribute set and
list appends.
This commit is contained in:
Silvan Mosberger 2021-12-02 17:46:44 +01:00
parent 2ff71b0213
commit 90700736c7
3 changed files with 55 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

2
src/libexpr/value.hh
View file

@ -425,9 +425,11 @@ void mkPath(Value & v, const char * s);
#if HAVE_BOEHMGC
typedef std::vector<Value *, traceable_allocator<Value *> > ValueVector;
typedef std::map<Symbol, Value *, std::less<Symbol>, traceable_allocator<std::pair<const Symbol, Value *> > > ValueMap;
typedef std::map<Symbol, ValueVector, std::less<Symbol>, traceable_allocator<std::pair<const Symbol, ValueVector> > > ValueVectorMap;
#else
typedef std::vector<Value *> ValueVector;
typedef std::map<Symbol, Value *> ValueMap;
typedef std::map<Symbol, ValueVector> ValueVectorMap;
#endif