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Another great alternatives for making temporary filehandles is IO::File's new_tmpfile() method.
I prefer to use this method when their is no need to know the name of the file. In fact, IO::File hides these implementation details from you completly, and very nicely I might add. It Does the Right Thing with respect to security, file permissions and the naming of the file to ensure there is no "filename collisions".
Here's a quick example to illustrate how close it is compared to standard IO::File handle:
I find temp files are really useful if you need to do alot of processing on large files/strings, and you can't do all the processing in memory.
Here you will see a real-world example of IO::File's new_tmpfile() method in action. I wrote this example to show an interesting way to prepend any string to a filehandle.
In reply to Re: scratching the surface of File::Temp