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Authored by: scav on Tuesday, May 15 2012 @ 05:47 AM EDT |
A number can be a symbolic reference - if it is arbitrarily
allocated (or calculated as a hash), and the value of the
number has no other meaning other than as a symbol.
For example, textures in OpenGL have a numeric "name"
allocated by a call to glGenTextures(). They are only
referred to in your program by this numeric name. You have
no access to the internal structures of the OpenGL library
to access them any other way.
But an index into a table has a straightforward
interpretation which has no symbolic quality needing
resolution. You use the numeric (not symbolic) value of the
index to directly calculate a byte offset from the start of
the table.
So Dr Mitchell is being intellectually dishonest. It's
embarrassing to watch.
---
The emperor, undaunted by overwhelming evidence that he had no clothes,
redoubled his siege of Antarctica to extort tribute from the penguins.[ Reply to This | Parent | # ]
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