Here are some examples: Notice how each of these blocks has a nub on its left hand side, just like our value blocks: All of these blocks are function-call blocks, meaning they are used to call a...

Procedural Abstraction •Hide the details of the function from the caller –caller only needs to read the specification –(“procedure” means function) •Caller promises to pass valid inputs –no promises on invalid inputs •Implementer then promises to return correct outputs –does not …

Procedural Abstraction Example •Specification of rev is imperative: // @returns same numbers but in reverse order, i.e. // rev(nil) := nil // rev(cons(x, L)) := rev(L) ++ [x] const rev = (L: List): List => {return rev_acc(L, nil); // faster way}; –code implements a different function –need to use reasoning to check that these two match

Jul 18, 2018 · In high level programming, we deals with two particular kinds of abstraction: procedural abstraction and data abstraction. Its a model of what we want a subprogram to do (but not how to...

One example is procedural abstraction: once an algorithm is understood, and written down precisely (either in pseudocode or in a programming language), it can be thought of as a method.

Procedural abstraction refers to the mechanisms in computer programming that enable and enforce the abstraction of operations. This concept enables programmers to ignore the complexity of how a procedure is implemented and concentrate on its usage within the system.

Free practice questions for Computer Science - Procedural Abstraction. Includes full solutions and score reporting.

A procedural abstraction (“specification”): describes what a procedure does, ignores how it does it different implementations of the abstraction can differ over details

Abstractions in computer science hide details to manage complexity. Procedural abstraction mean breaking a program into pieces, implementing each piece as a procedure (also known as a method or a function), and combining calls to the procedures to form the overall program.

Let's do some more examples of procedures. Example: hypotenuse Suppose we are given a procedure sqrt that takes one parameter (a double) and returns its square root: We don't know what sqrt is doing inside, but we can use it anyway because we understand its specification. This is a nice advantage of procedural abstraction.