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Suppose, for example, that you want to display
1746 in the transcript. First, you send a printString
message to the Integer instance, 1746, which answers the
String instance, '1746'. Then, you combine '1746'
with show:, producing a show: message to be sent to
Transcript:
*-- The message receiver
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| *-- The message's method selector
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| | *-- The message's argument
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v v ----------------
Transcript show: 1746 printString
----------------------
^
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*-- The message sent to the receiver
Having prepared an expression such as
Transcript show: 1746 printString in a workspace, you cause it to be
evaluated by selecting it and clicking right > Do It.
Evaluating the expression causes Smalltalk to display 1746 in the
transcript.