carlinmack/ArraysAndHashes.md

## ArraysAndHashes.md

      
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              ArraysAndHashes.md
            
          
Creation
Reference
Dereference


Array
@array = ()
$ref = []


@array = ('one', two)

$value = $array[$index];


$ref = ['one', 'two']
$value = $ref->[$index];


@array[0] = 'one'
$ref->[0] = 'one'


$ref = \@foo
@new_array = @{$ref}


Hash
%hash = ()
$ref = {}


%hash = (key => 'value')

$value = $hash{key}


$ref = {key => 'value'}
$value = $ref->{key}


$hash{key} = 'value'
$ref->{key} = "value"


$ref = \%hash
%new_hash = %{$ref}
	Creation	Reference	Dereference
Array	@array = ()	$ref = []
	@array = ('one', two)		$value = $array[$index];
		$ref = ['one', 'two']	$value = $ref->[$index];
	@array[0] = 'one'	$ref->[0] = 'one'
		$ref = \@foo	@new_array = @{$ref}
Hash	%hash = ()	$ref = {}
	%hash = (key => 'value')		$value = $hash{key}
		$ref = {key => 'value'}	$value = $ref->{key}
	$hash{key} = 'value'	$ref->{key} = "value"
		$ref = \%hash	%new_hash = %{$ref}