How do I treat a string like a filehandle?

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question: ⭐ (strings)

I want to be able to play with a string as if it were a I/O stream. You can see this sort of functionality in C++ with sstream, and in Java with StringBuffer*Stream. A simple e.g., I'd love to be able to do something like:

my $stringfile = FileHandle::newFromString( "One fish\nTwo fish\nThree
+ fish\nFour fish" );
while( <$stringfile> ) {
    dosomething( $_ );
}
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...but on a larger scale. Cheers, - jsproat

Originally posted as a Categorized Question.

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