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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 glob *glob *{\$gr} \$gr->**[3]
glob slot *glob{ARRAY} *{\$gr}{ARRAY} \$gr->*{ARRAY}[3]
1. The curly brackets around \$sr, \$ar, \$hr, \$cr and \$gr are optional when the contents of the curlies is simply a scalar.
2. Requires Perl 5.20+.
3. Requires Perl 5.24+. Available in Perl 5.20+ by adding both use feature qw( postderef ); and no warnings qw( experimental::postderef );.

In reply to Mini-Tutorial: Dereferencing Syntax by ikegami

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