 | Chapter 8 Standard Modules |  |
The base class for all other IO handle classes. Its main purpose is for the other IO classes to inherit from it; programs should not create IO::Handle objects directly. Provides the following methods:
IO::Handle also provides the following methods, which are not described in detail here because they are simply front-ends for the corresponding built-in functions. See Chapter 5, Function Reference, for more information.
| Method | Description |
|---|---|
close | Closes file or pipe |
eof | Returns 1 if next read will return end-of-file |
fileno | Returns file descriptor for a filehandle |
getc | Returns next character from input file |
print | Prints a string or comma-separated list of strings |
printf | Prints a formatted string |
read | Reads data from a filehandle |
stat | Returns an array of status information for a file |
sysread | Reads data from a filehandle with system call read(2) |
syswrite | Writes data to a filehandle with system call write(2) |
truncate | Truncates a file to a specified length |
Finally, the following methods act on the equivalent Perl variables. See Chapter 4 for more information.
| Method | Description |
|---|---|
autoflush | If nonzero, forces a flush now and after each write or print (default 0) |
format_page_number | Current page number |
format_lines_per_page | Current page length (default 60) |
format_lines_left | Number of lines left on page |
format_name | Name of current report format |
format_top_name | Name of current top-of-page format |
format_line_break_characters | Current set of linebreak chars for a format |
format_formfeed |
Formfeed char used by formats (default |
format_write | Wrapper for write function |
input_record_separator | Input record separator (default newline) |
input_line_number | Current input line number for last filehandle accessed |
output_field_separator | Output field separator for print |
output_record_separator | Output record separator for print |
|  | |
| 8.91 IO::File |  | 8.93 IO::Pipe |