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APCSP Lesson 2.8


abstraction A general representation of something -- of some person or place or event or process. Words, symbols, maps, and models are all examples.
abstracting Process of creating abstractions.
constant The numeral '5', is an abstraction that represents a single thing, e.g., the value 5.
variable The symbol 'X', can be used to represent any number. X is more general than a constant value of 5.
data abstraction The practice of organizing and encapsulating certain data into a more general representation. An example would be storing the text 'hello' in a single variable rather than having numerous occurrences of 'hello' in a program
procedural abstraction The practice of organizing and encapsulating algorithms in named procedures that can then be invoked by name. An example would be the 'sqrt(x)', square root of x, which encapsulates the algorithm for calculating the square root of x.
Created by: mgarda



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