diff options
Diffstat (limited to 'src/libexpr/primops.hh')
| -rw-r--r-- | src/libexpr/primops.hh | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/libexpr/primops.hh b/src/libexpr/primops.hh index 39d23b04a5ce..31bf3f84f6c7 100644 --- a/src/libexpr/primops.hh +++ b/src/libexpr/primops.hh @@ -9,6 +9,9 @@ struct RegisterPrimOp { typedef std::vector<std::tuple<std::string, size_t, PrimOpFun>> PrimOps; static PrimOps * primOps; + /* You can register a constant by passing an arity of 0. fun + will get called during EvalState initialization, so there + may be primops not yet added and builtins is not yet sorted. */ RegisterPrimOp(std::string name, size_t arity, PrimOpFun fun); }; |