SYNOPSIS

     use Perinci::Result::Util qw(is_env_res);
    
     say is_env_res([200, "OK"]); # 1
     say is_env_res("ok");        # 0
     say is_env_res([1, 2, 3]);   # 0

FUNCTIONS

 is_env_res($res) => BOOL

    Return true if $res looks like enveloped result. It employs some
    heuristics.

SEE ALSO

    Rinci::function