Beefy Boxes and Bandwidth Generously Provided by pair Networks
Just another Perl shrine
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
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'} $hr->%{'a','b','c'}[3]
code call (prototype obeyed) func(@args)
call (prototype ignored) &func(@args) &{$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 and $cr are optional when the expression in the curlies is simply a scalar.
  2. Requires Perl 5.20+.
  3. Experimental addition to Perl 5.20.

See also:


In reply to Mini-Tutorial: Dereferencing Syntax by ikegami

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others examining the Monastery: (15)
    As of 2014-12-22 18:37 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      Is guessing a good strategy for surviving in the IT business?





      Results (126 votes), past polls