ngomong bahasa awam :) di ruby variable itu nyimpen object, apa itu object numerik, string, array etc... nah untuk assigmentnya pake =, tapi inga' kalo yang di assignment adalah variable(tok tanpa embel embel .clone etc..) maka dia akan reference-kan
On 5/23/07, Yohanes Santoso <[EMAIL PROTECTED]> wrote: > > "julius sirait" <[EMAIL PROTECTED] <sirait.milis%40gmail.com>> > writes: > > > On 5/23/07, Widi Harsojo <[EMAIL PROTECTED] <wharsojo%40gmail.com>> > wrote: > >> > >> > >> > >> > >> > >> > >> irb(main):071:0> 1.class > >> => Fixnum > >> irb(main):072:0> 121312312312.class > >> => Bignum > >> irb(main):073:0> > >> > > > > yoi. nah, kenapa untuk nilai yang sama, object_id nya sama. tebakan > > nya kan karna class method new gak ada. tapi kenapa untuk bignum, > > object_id nya beda padahal: > > > > irb(main):002:0> Fixnum.new > > NameError: undefined method `new' for Fixnum:Class > > from (irb):2 > > irb(main):003:0> Bignum.new > > NameError: undefined method `new' for Bignum:Class > > from (irb):3 > > > > -- > > Julius Sirait > > Itu implementation artifact untuk performance reason: > > http://www.rubycentral.com/faq/rubyfaq-9.html > vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv > 9.3 What is the difference between an immediate value and a reference? > > Fixnum, true, nil, and false are implemented as immediate values. With > immediate values, variables hold the objects themselves, rather than > references to them. > > Singleton methods cannot be defined for such objects. Two Fixnums of > the same value always represent the same object instance, so (for > example) instance variables for the Fixnum with the value "one" are > shared between all the "ones" is the system. This makes it impossible > to define a singleton method for just one of these. > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > YS. > > [Non-text portions of this message have been removed]
