Need clarification on the print function


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Need clarification on the print function

by drock (Beadle)

on Mar 17, 2005 at 22:48 UTC ( [id://440571]=perlquestion: print w/replies, xml )

Need Help??

drock has asked for the wisdom of the Perl Monks concerning the following question:

perldoc -f print ok in perldoc print it states: If FILEHANDLE is a variable and the next token is a term, it may me intrepreted as an operator unless you interpose a "+" . so in the code :

 
  while (<FOO>) {
 
        ....code
      ...code
        print +(split)[2], $, ;
}
[download]

FOO is my filehandle and it is considered a variable meaning $_ right? so the next token a term, would be what? print split or 2 ??? a term meaning a unary term? and what exactly does interpose mean? thanks derek

Edit by BazB: retitle from "print".

Comment on Need clarification on the print function Download Code

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Re: Need clarification on the print function by trammell (Priest) on Mar 17, 2005 at 23:09 UTC
The text you're quoting: (NOTE: If FILEHANDLE is a variable and the next token is a term, it may be misinterpreted as an operator unless you interpose a "+" or put parentheses around the arguments.) applies to the `print FILEHANDLE LIST` form of `print`. More relevant for your print statement is: Also be careful not to follow the print keyword with a left parenthesis unless you want the corresponding right parenthesis to terminate the arguments to the print--interpose a "+" or put parentheses around all the arguments. Without the "+", you would have `print(split)[2], $, ;` [download] which is a syntax error.	[reply] [d/l]
Re: Need clarification on the print function by gam3 (Curate) on Mar 18, 2005 at 00:41 UTC
`print((split)[2], $,); # Might be more clear.` [download] A picture is worth a thousand words, but takes 200K.	[reply] [d/l]

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