Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl Monk, Perl Meditation
 
PerlMonks  

Re^2: Does this ctor make sense?

by anaconda_wly (Scribe)
on Jan 15, 2013 at 15:33 UTC ( #1013412=note: print w/replies, xml ) Need Help??


in reply to Re: Does this ctor make sense?
in thread Does this ctor make sense?

No, I'm not talking about the package. I know the Package can be omitted. I'm just not sure whether the returned blessed Hash reference is the same thing with the object returned by bless, which should be the return value of new.

Replies are listed 'Best First'.
Re^3: Does this ctor make sense?
by NetWallah (Abbot) on Jan 15, 2013 at 16:51 UTC
    If I understand your question right, you are asking about something like this:
    my $this = bless $other, "ClassName";
    and, you want to know if "$this" is the same as "$other".

    From "perldoc -f bless",
       ...it returns the reference for convenience

    So - Yes - it is the same, and No - it is not necessary to capture the returned object from 'bless'.

                 Most people believe that if it ain't broke, don't fix it.
            Engineers believe that if it ain't broke, it doesn't have enough features yet.

      Exactly. Thanks!

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1013412]
help
Chatterbox?
[Corion]: But yes, "who started this process" is interesting information :)
[tye]: no, I really believe that "login user" was added as a fundamental bit of info about each process in order to enhance the usefulness of auditing
[Corion]: Ah - if that information is saved in a file, then you could theoretically spam that file and confuse getlogin(). So, don't use it for authentication :)
[tye]: that is what getlogin() certainly *used* to do. I don't believe that is what it certainly should do.
[davido]: /var/run/utmp is 664 i think.
[tye]: Note that my "man getlogin" says that it uses stdin when it should use /dev/tty (calling a glibc bug). But that does not appear to be the case when I test it. But maybe Perl's getlogin() is not using glibc's getlogin().
[oiskuu]: well, run a strace and see what the getlogin does for you.... As I said. SELinux probably has those security labels. But not regular linux.
[tye]: for example, read https://unix. stackexchange.com/ questions/146138/ loginuid-should-be -allowed-to-change -or-not-mutable-or -not
[tye]: I'm not using SELinux and it certainly appears to disagree with you. shrug
[tye]: Since you brought up /proc, oiskuu, I didn't see you respond to my suggestion of 'loginuid'. Does your /proc not have such?

How do I use this? | Other CB clients
Other Users?
Others chanting in the Monastery: (6)
As of 2017-06-23 19:46 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    How many monitors do you use while coding?















    Results (554 votes). Check out past polls.