Comments on: Time: the unseen global variable http://www.hackinghat.com/index.php/article/time-the-unseen-global-variable Wed, 01 Feb 2012 14:27:00 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Steve Knight http://www.hackinghat.com/index.php/article/time-the-unseen-global-variable/comment-page-1#comment-2632 Steve Knight Wed, 09 Jan 2008 06:36:19 +0000 http://www.hackinghat.com/index.php/article/time-the-unseen-global-variable#comment-2632 Hmm, I disagree. The storage of the variable, if we're going to get picky, is in the system clock and it is being changed constantly by a process that happens outside your program. But it gets worse, my program really could change the value of the system time if it had sufficient privleges. Of course that would be crazy but I think the statement that time is a global variable really holds true! Hmm, I disagree.

The storage of the variable, if we’re going to get picky, is in the system clock and it is being changed constantly by a process that happens outside your program. But it gets worse, my program really could change the value of the system time if it had sufficient privleges. Of course that would be crazy but I think the statement that time is a global variable really holds true!

]]> By: e http://www.hackinghat.com/index.php/article/time-the-unseen-global-variable/comment-page-1#comment-2601 e Mon, 07 Jan 2008 15:00:51 +0000 http://www.hackinghat.com/index.php/article/time-the-unseen-global-variable#comment-2601 Huh? This has very little to do with the fact that it's a global variable. How time changes is very easy to understand. Global variables are bad since any part of the program can modify one, so understanding how a small part of the program works may depend on knowing how the rest of the program modifies certain global variables. With time, no part of the program changes the value of time. Yes, I suppose it is a global variable, but that's not where the complexity arises. Huh? This has very little to do with the fact that it’s a global variable. How time changes is very easy to understand. Global variables are bad since any part of the program can modify one, so understanding how a small part of the program works may depend on knowing how the rest of the program modifies certain global variables. With time, no part of the program changes the value of time. Yes, I suppose it is a global variable, but that’s not where the complexity arises.

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