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

getEnv(): Return std::optional

Browse source 
This allows distinguishing between an empty value and no value.
This commit is contained in:
Eelco Dolstra 2019-11-22 16:06:44 +01:00
parent fd900c45b5
commit ba87b08f85
No known key found for this signature in database
GPG key ID: 8170B4726D7198DE
17 changed files with 60 additions and 63 deletions
Download patch file Download diff file Expand all files Collapse all files

2
src/libutil/util.hh
View file

@ -35,7 +35,7 @@ extern const std::string nativeSystem;
/* Return an environment variable. */
string getEnv(const string & key, const string & def = "");
std::optional<std::string> getEnv(const std::string & key);
/* Get the entire environment. */
std::map<std::string, std::string> getEnv();