[Newbies] Where to 'declare' symbols
tapplek at gmail.com
Tue Aug 14 02:10:39 UTC 2007
On Mon, Aug 13, 2007 at 09:53:12PM -0400, John Almberg wrote:
> Sorry... probably 'symbol' isn't the right word, since as far as I
> know, something like #aSymbol doesn't have any value other than it's
> own identity.
> What I really want is a named constant that has a value. Like
> iAmAConstant = 5. Is there such a thing in Smalltalk?
Two ways; both are common.
"First, and simplest, implement a message that returns the
MyClass >> mySpecialNumber
"Second, use a class pool variable:"
Object subclass: #MyClass
"Set its value in the CLASS-SIDE initialize method:"
MyClass class >> initialize
MySpecialConstant := 5
"Don't forget to call MyClass initialize. Monticello will
automatically do this ONCE"
Matthew Fulmer -- http://mtfulmer.wordpress.com/
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