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If you pass the hash, it gets flattened and passed as a list of 30 seperate scalars, the association between key=>value pairs is lost. By passing the reference, Data::Dumper knows it a hash, and outputs it as such, with the Key=>value pairs clearly associated and shown as being a part of a compound entity.

In fact, you can then write this output to a file and then read it back, eval the string and it will recontruct the hash in memory. Often used as a cheap man DB.

Run the program both ways to see the difference.


Nah! Your thinking of Simon Templar, originally played by Roger Moore and later by Ian Ogilvy

In reply to Re: Re: Re: Matching over multiple lines in a scalar by BrowserUk
in thread Matching over multiple lines in a scalar by Rich36

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