Method expose

src/bvar/variable.h:149–152

Expose this variable globally so that it's counted in following functions: list_exposed count_exposed describe_exposed find_exposed Return 0 on success, -1 otherwise.

    //   find_exposed
    // Return 0 on success, -1 otherwise.
    int expose(const butil::StringPiece& name,
               DisplayFilter display_filter = DISPLAY_ON_ALL) {
        return expose_impl(butil::StringPiece(), name, display_filter);
    }
 
    // Expose this variable with a prefix.
    // Example: