Reusing Variable Names
This lesson explains how variable names can be reused in Ruby.
It is also important to keep in mind that a name is unique, in the sense that the same name can only be assigned to one value (object) at a time.
In other words, if you assign different values to the same variable, then assignments that happen later will simply overwrite previous ones. Like so:
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number = 4number = number * 3puts number + 2
The first line assigns the name number to the number 4. The second line
re-assigns it to another object.
Getting back to our post-its metaphor… this would stick a post-it with the
name number on one thing, and then later ...
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