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Re: [Help-smalltalk] bug: Smalltalk snapshot: aString
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From: |
Stefan Schmiedl |
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Subject: |
Re: [Help-smalltalk] bug: Smalltalk snapshot: aString |
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Date: |
Sun, 2 Oct 2005 10:26:28 +0200 |
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User-agent: |
Mutt/1.5.8i |
LD (02.10. 13:01):
> Is the Smalltalk class use above an alias for SystemDictionary? How
> does this all tie together in other words? Where is this behaviour
> customised?
Talk to the system:
GNU Smalltalk ready
st> Smalltalk class name !
#SystemDictionary
st> SystemDictionary allInstances !
WeakArray new "<0x2a9617ecc0>"
st> SystemDictionary allInstances size !
1
st> SystemDictionary allInstances first = Smalltalk !
true
So you see that Smalltalk is an instance of SystemDictionary.
The capital letter is used for "global" variables which are
automatically looked up in the SystemDictionary instance referenced by
the symbol #Smalltalk:
st> Smalltalk at: #Object !
Object
st> Smalltalk at: #SystemDictionary !
SystemDictionary
st> Smalltalk at: #Smalltalk !
SystemDictionary new: 512 "<0x2a96104030>"
st> Smalltalk !
SystemDictionary new: 512 "<0x2a96104030>"
Smalltalk is interactive and introspective -- you just need to ask the
right questions...
s.
--
Stefan Schmiedl
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