From: Demonic Software <demonic.software@...>
Date: 2008-03-13T14:29:27+09:00
Subject: Setting Class Methods Using Strings

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Hello,

First question:
With the 'print 'foo_method called with \#{arg}', is there a way to escape
the "#" so that arg will not be evaluated until after the statement is
evalled?  For example:

Let c be "'print 'foo_method called with \#{arg}'"

eval(c) => print 'foo_method called with #{arg}'



Second (Main Question)
Is it possible to set an object's methods with raw code and a method name?
I am not sure how to Google for an example on this, so I will just show an
example.

== Here is an empty class definition Foo, and later on I will want to
assign/add/set a method in an instantiated Foo object ==

class Foo
end

== Now I want to set a method in an instantiated Foo with  code, so that I
can call f ==

code = "def foo_method(arg)
               print 'foo_method called with #{arg}'
            end"

f = Foo.new()
#...
#code to set a method in f
#...

f.foo_method("for the win!")

==

Is this possible?  or Do I need create a string and add the method in like
the following example?

code = "\ndef foo_method(arg)
               print 'foo_method called with \#{arg}'
            end\n"
foo = "class Foo " + code + " end"

eval(foo)
f = Foo.new()
f.foo_method("for the win!")



Thanks in advance for your help.

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