Add a variable to a class instance at runtime: Difference between revisions

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e := Empty clone
e foo := 1
 
=={{header|J}}==
Simple assignment will add variables to classes.
 
C=:<'exampleclass'
V__C=: 0
OBJ=:conew 'exampleclass'
V__OBJ
0
W__C
|value error
W__C=: 0
W__OBJ
0
 
=={{header|JavaScript}}==
Anonymous user