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class String
# Get a constant by a given string name.
#
# "Class".to_const #=> Class
#
# Note this method is not as verstile as it should be,
# since it can not access contants relative to the current
# execution context. But without a binding_of_caller that
# does not seem possible.
def to_const
split('::').inject(Object){ |namespace,name| namespace.const_get(name) }
end
end
__END__
require 'test/unit'
class TestStringConversion < Test::Unit::TestCase
TestConst = 4
def test_to_const
assert_equal( 4, "TestStringConversion::TestConst".to_const )
end
end
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