Example 1: whats a lambda
x = lambda a, b, c, d, e, f: a + b + c + d + e + f
print(x(31231, 312, 312, 31, 12, 31))
Example 2: whats a lambda
#include <bits/stdc++.h>
using namespace std;
void printVector(vector<int> v)
{
for_each(v.begin(), v.end(), [](int i)
{
std::cout << i << " ";
});
cout << endl;
}
int main()
{
vector<int> v {4, 1, 3, 5, 2, 3, 1, 7};
printVector(v);
vector<int>:: iterator p = find_if(v.begin(), v.end(), [](int i)
{
return i > 4;
});
cout << "First number greater than 4 is : " << *p << endl;
sort(v.begin(), v.end(), [](const int& a, const int& b) -> bool
{
return a > b;
});
printVector(v);
int count_5 = count_if(v.begin(), v.end(), [](int a)
{
return (a >= 5);
});
cout << "The number of elements greater than or equal to 5 is : "
<< count_5 << endl;
p = unique(v.begin(), v.end(), [](int a, int b)
{
return a == b;
});
v.resize(distance(v.begin(), p));
printVector(v);
int arr[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
int f = accumulate(arr, arr + 10, 1, [](int i, int j)
{
return i * j;
});
cout << "Factorial of 10 is : " << f << endl;
auto square = [](int i)
{
return i * i;
};
cout << "Square of 5 is : " << square(5) << endl;
}