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affordable web hosting sql server Let's confirm this with some code. person = "Tim" person.id » 537771100 person.type » String person » "Tim" On the first line, Ruby creates a new String object with the value ``Tim.'' A reference to this object is placed in the local variable person.
affordable web hosting sql server A quick check shows that the variable has indeed taken on the personality of a string, with an object id, a type, and a value. So, is a variable an object? In Ruby, the answer is ``no.'' A variable is simply a reference to an object. Objects float around in a big pool somewhere (the heap, most of the time) and are pointed to by variables. Let's make the example slightly more complicated.
affordable web hosting sql server person1 = "Tim" person2 = person1 person1[0] = 'J' person1 » "Jim" person2 » "Jim" What happened here? We changed the first character of person1, but both person1 and person2changed from ``Tim'' to ``Jim.'' It all comes back to the fact that variables hold references to objects, not the objects themselves. The assignment of person1 to person2 doesn't create any new objects; it simply copies person1's object reference to person2, so that both person1 and person2 refer to the same object. We show this in Figure 3.1 on page 31.
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