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Re: Heisenberg Uncertainty Hash

by ikegami (Patriarch)
on Apr 26, 2005 at 22:51 UTC ( [id://451795]=note: print w/replies, xml ) Need Help??

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  1. or download this
    # If record 'd' does not exist:
    if (!$hash{'d'})
    
  2. or download this
    # If record 'd' does not exist, or
    # if record 'd' exists but has no field 'value':
    if (!$hash{'d'} || !exists($hash{'d'}{'value'}))
    
  3. or download this
    # If record 'd' does not exist,
    # if record 'd' exists but has no field 'value', or
    # if record 'd' exists and has field 'value' but is undefined:
    if (!$hash{'d'} || !defined($hash{'d'}{'value'}))
    
  4. or download this
    # If record 'd' does not exist,
    # if record 'd' exists but has no field 'value',
    ...
    # if record 'd' exists and has field 'value' but is "0", or
    # if record 'd' exists and has field 'value' but is '':
    if (!$hash{'d'} || !$hash{'d'}{'value'})
    

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