Beefy Boxes and Bandwidth Generously Provided by pair Networks
Problems? Is your data what you think it is?
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

A simple test:

my $sum = 0; for( 1..10_000_000 ) { $sum++ if coin_toss() eq 'heads'; } print $sum;

The result I got was 5,000,938, meaning heads happened 50.01% of the time. Seems pretty reasonable.

Most people's perceptions of randomness are notoriously faulty. For example, they seriously underestimate the number of times repeated numbers will appear in a sequence.

One suggestion: I think it is clearer to use int() to specify that you want a random integer:

my $index = int rand @coin; return $coin[ $index ];

As your code is written, you are using a floating point number as the array index. This works (because it is converted to integer), but it is a little unusual. You wouldn't write  $array[1.5]



When's the last time you used duct tape on a duct? --Larry Wall

In reply to Re: Is this really random? by ColonelPanic
in thread Is this really random? by dr.jekyllandme

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others drinking their drinks and smoking their pipes about the Monastery: (7)
    As of 2014-09-20 20:45 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      How do you remember the number of days in each month?











      Results (163 votes), past polls