١٨ - سلسلة تعلم سي بلس بلس: Lambda Expressions

ahmedeldeep · 20 فبراير 2023، 7:39م

يحتوي الفيديو على شرح للقاط الاتية

00:00 - Intro
00:42 - Function Pointers
06:00 - Using Lambda
09:05 - Lambda Implementation
11:47 - Type of a Lambda
13:07 - Lambda Parts
21:33 - Outro

تحميل ملف العرض
18 Lambda Expressions.pdf (399.7% u)

الأمثلة

github.com

ahmedeldeep/cpp-course/blob/master/09-lambda/01-using-function-pointers.cc


#include <iostream>
#include <vector>

template <class T>
void increment(T& number) {
  number++;
}

template <class T>
void print(T& number) {
  std::cout << number << "\n";
}

template <class Iter, class T>
void operation(Iter first, Iter last, void (*op)(T&)) {
  for (auto it = first; it != last; it++) {
    op(*it);
  }
}

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github.com

ahmedeldeep/cpp-course/blob/master/09-lambda/02-using-lambda.cc


#include <iostream>
#include <vector>

template <class T, class F>
void operation(T first, T last, F op) {
  for (auto it = first; it != last; it++) {
    op(*it);
  }
}

int main() {
  //
  std::vector<int> numbers{10, 20, 30, 40, 50};

  operation(numbers.begin(), numbers.end(), [](int& number) { number++; });

  class increment {
   public:
    void operator()(int& number) const { number++; }

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github.com

ahmedeldeep/cpp-course/blob/master/09-lambda/03-using-lambda.cc


#include <algorithm>
#include <iostream>
#include <limits>
#include <vector>

int main() {
  //
  std::vector<int> numbers{10, 20, 30, 40, 50};

  int max = 0;
  int min = std::numeric_limits<int>::max();
  int sum = 0;

  auto minmaxsum = [&max, &min, sum](int number) mutable -> int {
    sum += number;
    if (number > max) max = number;
    if (number < min) min = number;
    std::cout << sum << "\n";
    return sum;

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