Re: Random Imaging

srand(time ^ $$);

Eeew! Where did you get this from? Many, many moons ago I wrote a little CGI program that randomly returned an image as well, and I discovered that it would often return the same image twice in a row, if you have seed the random generator with time ^ $$. I posted about this to the newsgroup more than seven years ago. http://groups.google.com/groups?selm=3148E9E1.21CA6C29%40www.iaf.nl&output=gplain This resulted in the Camel II already warning against this usage, and later versions of Perl using a much better default salt.

Why, o, why, did you pick such a bad seed?

Abigail

Comment on Re: Random Imaging

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Re: Re: Random Imaging by waswas-fng (Curate) on Aug 01, 2003 at 15:33 UTC
many moons ago I wrote a little CGI program ... with time ^ $$ ... I posted about this to the newsgroup more than seven years ago ... Why, o, why, did you pick such a bad seed? Perhaps it is a comon mistake for new people to random numbers and perl? It sounds like you learned from your mistake 7 years ago. =) -Waswas	[reply]
Re: Random Imaging by Abigail-II (Bishop) on Aug 01, 2003 at 15:40 UTC
I was doing what was common practise back then. Since then common practise has changed, and the documentation explicitely warns against using `time ^ $$`. So, my question remains, why did you choose `time ^ $$`? Abigail	[reply]