CODEWITHSUNDEEP
smalltalk
rnso
rnso

Reputation: 24623

Why this simple class method is not working

I am trying to understand smalltalk and trying following simple code with gnu-smalltalk: 

Object subclass: Myclass[
    myMethod: val [val printNl]
]

mc := Myclass new.
mc myMethod: "55".

However, it does not work and gives following error: 

$gst simpleclass.st 
simpleclass.st:6: expected object

I thought "55" is an object in smalltalk.

Obviously I am missing something very basic but I am not able to figure it out. Thanks for your help.

Upvotes: 0

Views: 83

Answers (1)

Leandro Caniglia
Leandro Caniglia

Reputation: 14843

The reason why

mc := Myclass new.
mc myMethod: "55".

doesn't work is simple: In Smalltalk double quoted strings are comments. Hence, for the compiler, your expression is equivalent to:

mc myMethod:

as if there was no argument whatsoever. The intended expression should have been

mc myMethod: 55 "and now this should work!"

Upvotes: 2

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