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referance_subroutines

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referance_subroutines [2012/02/07 18:58] – created k2patelreferance_subroutines [2020/08/10 02:35] (current) – external edit 127.0.0.1
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 The following table discusses the referencing and de-referencing of variables. Note that in the case of lists and hashes, you reference and dereference the list or hash as a whole, not individual elements (at least not for the purposes of this discussion). The following table discusses the referencing and de-referencing of variables. Note that in the case of lists and hashes, you reference and dereference the list or hash as a whole, not individual elements (at least not for the purposes of this discussion).
 +
 +^ Variable ^ Instantiating the scalar ^ Instantiating a reference to it ^ Referencing it ^ Dereferencing it ^ Accessing an element ^
 +| $scalar | $scalar = "steve"; | $ref = \"steve"; | $ref = \$scalar | $$ref or ${$ref} | N/A |
 +| @list | @list = ("steve", "fred"); | $ref = ["steve", "fred"]; | $ref = \@list | @{$ref} | ${$ref}[3] $ref->[3] |
 +| %hash | %hash = ("name" => "steve", "job" => "Troubleshooter"); | $hash = {"name" => "steve",  "job" => "Troubleshooter"}; | $ref = \%hash | %{$ref} | ${$ref}{"president"} $ref->{"president"} |
 +| FILE | | | $ref = \*FILE | {$ref} or scalar <$ref> | |
 +
      
  
-|Variable|Instantiating 
-the scalar|Instantiating a 
-reference to it|Referencing it|Dereferencing it|Accessing an element| 
-|$scalar|$scalar = "steve";|$ref = \"steve";|$ref = \$scalar|$$ref or 
-${$ref}|N/A| 
-|@list|@list = ("steve", "fred");|$ref = ["steve", "fred"];|$ref = \@list|@{$ref}|${$ref}[3] 
-$ref->[3]| 
-|%hash|%hash = ("name" => "steve", 
-   "job" => "Troubleshooter");|$hash = {"name" => "steve", 
-   "job" => "Troubleshooter"};|$ref = \%hash|%{$ref}|${$ref}{"president"} 
-$ref->{"president"}| 
-|FILE|||$ref = \*FILE|{$ref} or scalar <$ref>|| 
  
 These principles are demonstrated in the source code below. Note the following anomolies: These principles are demonstrated in the source code below. Note the following anomolies:
referance_subroutines.1328641106.txt.gz · Last modified: 2020/08/10 02:29 (external edit)