|
| Direct
| Using References
|
| Syntax 1[1]
| Syntax 2
|
| scalar
| itself
| $s
| ${$sr}
| $sr->$*[3]
|
| array
| itself
| @a
| @{$ar}
| $ar->@*[3]
|
| element
| $a[0]
| ${$ar}[0]
| $ar->[0]
|
| slice
| @a[0,1,2]
| @{$ar}[0,1,2]
| $ar->@[0,1,2][3]
|
| index/value slice[2]
| %a[0,1,2]
| %{$ar}[0,1,2]
| $ar->%[0,1,2][3]
|
| last index
| $#a
| $#{$ar}
| $ar->$#*[3]
|
| hash
| itself
| %h
| %{$hr}
| $hr->%*[3]
|
| element
| $h{'a'}
| ${$hr}{'a'}
| $hr->{'a'}
|
| slice
| @h{'a','b','c'}
| @{$hr}{'a','b','c'}
| $hr->@{'a','b','c'}[3]
|
| key/value slice[2]
| %h{'a','b','c'}
| %{$hr}{'a','b','c'}
| $hr->%{'a','b','c'}[3]
|
| code
| call
| func(@args)
|
|
|
| call (prototype ignored)
| &func(@args)
| &{$cr}(@args)
| $cr->(@args)
|
| call (inherited @_)
| &func
| &{$cr}
| $cr->&*[3]
|
| glob
| itself
| *glob
| *{$gr}
| $gr->**[3]
|
| slot
| *glob{ARRAY}
| *{$gr}{ARRAY}
| $gr->*{ARRAY}[3]
|
- The curly brackets around $sr, $ar, $hr, $cr and $gr are optional when the contents of the curlies is simply a scalar.
- Requires Perl 5.20+.
- Requires Perl 5.24+. Available in Perl 5.20+ by adding both use feature qw( postderef ); and no warnings qw( experimental::postderef );.
See also:
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