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Add a variable to a class instance at runtime: Difference between revisions
Add a variable to a class instance at runtime (view source)
Revision as of 00:18, 17 October 2007
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This demonstrates how to dynamically add variables to a class instance at runtime. This is useful when the methods/variables are based on a data file that isn't available until runtime. Hal Fulton gives an example of creating an OO CSV parser at [http://www.devsource.com/article2/0,1759,1928562,00.asp An Exercise in Metaprogramming with Ruby]. This is referred to as "monkeypatching" by Pythonistas and some others. It's possible in most '''dynamic''' OO languages such as Python, Ruby, and Smalltalk.
=={{header|JavaScript}}==
e = {} // generic object
e.foo = 1
==[[Python]]==
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