Re (tilly) 2: An example of programming by contract

in reply to Re: An example of programming by contract
in thread An example of programming by contract

It is indeed possible to set $! in user code.

perl -e 'print ("$_ gives ", ($!=$_), "\n") for 1..20'
[download]

However you will note that its behaviour is highly magical and (unless you do some magic of your own) not particularly usable for any purpose other than its intended.

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Re: Re (tilly) 2: An example of programming by contract by blakem (Monsignor) on Nov 26, 2001 at 07:21 UTC
Thats kind of cool.... `122 gives Disk quota exceeded 123 gives No medium found 124 gives Wrong medium type 125 gives Unknown error 125 126 gives Unknown error 126 127 gives Unknown error 127` [download] Think a patch to set error 125 to 'Just another Perl hacker' would be frowned upon... ;-) -Blake	[reply] [d/l]

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