Hello monks,

I am testing a sleep functionality with in a for loop. I used "say" or "print" inside the for/foreach loop what ever you would like to call it.

Interesting thing is with "say" the printing is happening immediately for each element of the list where as for "print" function printing is happening all at once. In other words in below Example 1 for every 1 second it printed the number where as Example 2 printed all its output after 10 seconds.
Can anyone shed some light for this ignorant monk ??

Example 1:
perl -e 'use v5.10;for (1..10) {say $_; sleep(1);}'
1
2
3
4
5
6
7
8
9
10

Example 2:
perl -e 'use v5.10;for (1..10) {print $_; sleep(1);}'
12345678910

Regards,
Rookie Monk

In reply to Print vs Say with sleep function by raghuprasad241

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!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • 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, details, 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, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            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.