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| v |
In
normal language, names are (usually) tightly fixed
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to
their values --
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; |
“penny”
means 1 cent … it doesn’t change its meaning,
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and
sometimes refer to $8.41 or a time zone or an action
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| v |
In
computing names can change values
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Example:
Alpha and Bet in Alphabetize CDs changed
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Names
must change values in a program because
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programs
specify a transformation of input into output …
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as
the transformation proceeds the things named change
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values
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| v |
variable is the term for program names that can
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change
value
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