No increment operator in Ruby

Question

Possible Duplicate    Why doesn  39 t Ruby support i   or i mdash  for fixnum        Why is there no increment operator in Ruby   e g   i     i   Is the    operator used for something else  Is there a real reason for this

User · Answer

I don t think that notation is available because   unlike say PHP or C   everything in Ruby is an object   Sure you could use  var 0   var   in PHP  but that s because it s a variable and not an object  Therefore   var   new stdClass     var   would probably throw an error   I m not a Ruby or RoR programmer  so I m sure someone can verify the above or rectify it if it s inaccurate

User · Answer

From a posting by Matz       1     and -- are NOT reserved   operator in Ruby        2  C s increment decrement   operators are in fact hidden   assignment          They affect variables  not objects   You cannot accomplish         assignment via method   Ruby uses    -  operator instead        3  self cannot be a target of   assignment   In addition  altering         the value of integer 1 might cause severe confusion throughout         the program                         matz

User · Answer

Ruby has no pre post increment decrement operator  For instance  x   or x-- will fail to parse  More importantly    x or --x will do nothing  In fact  they behave as multiple unary prefix operators  -x    ---x    -----x           To increment a number  simply write x    1    Taken from  Things That Newcomers to Ruby Should Know    archive  mirror   That explains it better than I ever could   EDIT  and the reason from the language author himself  source             and -- are NOT reserved operator in Ruby    C s increment decrement operators are in fact hidden assignment  They affect variables  not objects  You cannot accomplish assignment via method  Ruby uses    -  operator instead    self cannot be a target of assignment   In addition  altering the value of integer 1 might cause severe confusion throughout the program

[ruby] No increment operator (++) in Ruby?

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