Perl Best Practices [Electronic resources] نسخه متنی

B.9. Chapter 10, I/O

• Don't use bareword filehandles. [Filehandles ]

• Use indirect filehandles. [Indirect Filehandles ]

• If you have to use a package filehandle, localize it first. [Localizing Filehandles ]

• Use either the IO::File module or the three-argument form of open. [Opening Cleanly ]

• Never open, close, or print to a file without checking the outcome. [Error Checking ]

• Close filehandles explicitly, and as soon as possible. [Cleanup ]

• Use while (<>), not for (<>). [Input Loops ]

• Prefer line-based I/O to slurping. [Line-Based Input ]

• Slurp a filehandle with a do block for purity. [Simple Slurping ]

• Slurp a stream with Perl6::Slurp for power and simplicity. [Power Slurping ]

• Avoid using *STDIN, unless you really mean it. [Standard Input ]

• Always put filehandles in braces within any print statement. [Printing to Filehandles ]

• Always prompt for interactive input. [Simple Prompting ]

• Don't reinvent the standard test for interactivity. [Interactivity ]

• Use the IO::Prompt module for prompting. [Power Prompting ]

• Always convey the progress of long non-interactive operations within interactive applications. [Progress Indicators ]

• Consider using the Smart::Comments module to automate your progress indicators. [Automatic Progress Indicators ]

• Avoid a raw select when setting autoflushes. [Autoflushing ]