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This article mainly explains why proper abstraction in C++ is better than using language functions directly. Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Next, let the editor take you to learn why proper abstraction in C++ is better than using language functions directly.

ES.2: proper abstraction is better than direct use of language features

Reason (reason)

"appropriate abstraction" (such as libraries or classes) is closer to the application concept than using language functionality directly, resulting in shorter, clearer code that is likely to be better tested.

Example (sample)

Vector read1 (istream& is) / / good

{

Vector res

For (string s; is > > s;)

Res.push_back (s)

Return res

}

More traditional, low-level, almost equivalent code will be longer, more cluttered, more difficult to guarantee correctness, and most likely slower.

Char** read2 (istream& is, int maxelem, int maxstring, int* nread) / / bad: verbose and incomplete

{

Auto res = new char* [maxelem]

Int elemcount = 0

While (is & & elemcount < maxelem) {

Auto s = new char [maxstring]

Is.read (s, maxstring)

Res [elemcount++] = s

}

Nread = & elemcount

Return res

}

Once overflow checking and error handling are added, the code becomes messy, and there is also the problem of remembering to destroy the returned pointers and C-style strings contained in the array.

Enforcement (implementation recommendations)

Not easy, not easy. Looking for messy loops, nested loops, long functions, missing function calls, rarely used built-in types? Or confirm cyclomatic complexity?

At this point, I believe you have a deeper understanding of "why proper abstraction in C++ is better than using language functions directly". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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