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What Abstraction Really Means
- Abstraction is a mental process of grouping things by specific differences while ignoring other respects.
- It creates new mental entities to manipulate and name based on chosen aspects, such as size.
Variables as Abstraction
- In programming, abstraction creates 'holes' for varying parts like parameters.
- Variables are abstractions representing any possible value fitting a defined type shape.
Printing Reports Without Abstraction
- Runar once wrote software that printed reports directly to a matrix printer without abstraction.
- Lack of layout abstraction made modifications practically impossible without rewriting the entire program.