(These are not really posted questions so much as they are things that beginners need to consider.)
"HERE" DOCUMENTS
* Here documents are used to embed lines of text in a Perl script, for printing or variable assignment.
$foo = <<EOT testing one two three $four EOT
print <<_Html_; various basic html can go here
sprinkled with Perl variables... _Html_
NOTE that the ending portion of a heredoc must be in column zero -- I have noticed that having indented can cause issues at times...
* Variable interpolation is "on" by default. You turn it off by making it single quoted.
print <<'EOP0' interpolation is off: $foo $bar are not converted to data EOP0
Whether you use Double quotes, the variables are interpolated into their corrisponding data:
print <<EOP1 interpolation supported: $foo is related to $bar EOP1
# The following is somewhat dangerous; use with # appropriate caution -
* Commands will be executed if the ending-string uses backticks. $sommand_results = <<`END_OF_COMMANDS` ls -al ps -aux END_OF_COMMANDS
Also, I previously posted how to cram single lines of text into an array; it is left upto the reader as an exercise to find that posting out there in Usenet land.
That's a small start to what I hope will become a long term thing :)
So, if you have a statement or neat easy to understand fact about HERE Documents, post it; keep this Perl Chain Posting going...
-Bill- __Sx__________________________________________ http://youve-reached-the.endoftheinternet.org/
-- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
