And symbols are immutable Brad
Sent from my iPad > On Apr 7, 2016, at 9:41 PM, Markus Stumptner <m...@cs.unisa.edu.au> wrote: > > As a result, internal names (e.g., method names) are usually symbols. Strings > are normally used for string manipulation, symbols for unambiguous (but > humanly readable!) internal reference (vulgo 'naming'). > > Markus > > >> On 08/04/16 10:53, Ben Coman wrote: >> A symbol is like a string, except that all symbols with the same value >> are in fact the same object; that is, every #hello symbol is the exact >> same object as every other #hello symbol. >> >> See "identically equal" section here... >> http://sdmeta.gforge.inria.fr/FreeBooks/ByExample/08%20-%20Chapter%206%20-%20Special%20Symbol.pdf >> >> cheers, ben >> >> On Fri, Apr 8, 2016 at 7:20 AM, Valentin Ryckewaert >> <valentin.ryckewa...@gmail.com> wrote: >>> Hello everyone, >>> >>> i'm learning Pharo and i'm having difficulties to understand the symbols, >>> what are they? How are they different of the ByteString ? Why are they >>> usefull ? >>> Why should I put #string where I can put 'string' ? >>> >>> Thanks in advance for your answer. >>> Valentin Ryckewaert > >
