Perl in a Nutshell, 2nd Edition

Name

setvbuf

Synopsis

$fh->setvbuf(params)

Takes the same parameters as the C function setvbuf(3) and uses the C function to set the buffering policy for the FileHandle.

The following additional FileHandle methods act as front-ends for the corresponding built-in Perl functions (see the O’Reilly book Programming Perl or the perlfunc manpage for more details):

clearerr	getc
close	gets
eof	seek
fileno	tell

The next group of FileHandle methods correspond to Perl special variables (see Programming Perl or the perlvar manpage):

autoflush	format_page_number
format_formfeed	format_top_name
format_line_break_characters	input_line_number
format_lines_left	input_record_separator
format_lines_per_page	output_field_separator
format_name	output_record_separator

Finally, the following methods are useful:

$ fh ->print

See Perl’s built-in print function.

$ fh ->printf

See Perl’s built-in printf function.

$ fh ->getline

Works like Perl’s <FILEHANDLE> construct, except that it can be safely called in an array context (but it still returns just one line).

$ fh ->getlines

Works like Perl’s <FILEHANDLE> construct when called in an array context to read all remaining lines in a file.