store-cast.hh File Reference

#include "lix/libstore/store-api.hh"

Include dependency graph for store-cast.hh:

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Functions
template<typename T >
T &	nix::require (Store &store)

Function Documentation

require()

template<typename T >

T & nix::require

(

Store &

store

)

Helper to try downcasting a Store with a nice method if it fails.

This is basically an alternative to the user-facing part of Store::unsupported that allows us to still have a nice message but better interface design.