Sioggis Mist.
Posted by Anonymous on Tue 19th Nov 2024 16:09
raw | new post

// Type your code here, or load an example.
#include <format>
#include <algorithm>
#include <vector>
#include <iostream>
#include <functional>
// #include <filesystem>

using namespace std;

struct FileInfo {
  string Name; // Name der Datei
  long long Length; // Dateigröße
};

struct MySmaler {
    bool operator () (const std::string & a, const std::string & b){
        return a < b;
    };
};


struct MyGrater {
    bool operator () (const FileInfo & a, const FileInfo & b){
        return a.Length < b.Length;
    };
};

bool greaterFile( FileInfo * pA, FileInfo * pB ) {
    return pA->Length < pB->Length;
}

void test()
{
    std::vector<std::string> vi{ "Du", "Wir", "Lila", "Alle", "Andren"};
    std::sort(vi.begin(), vi.end(), std::greater<std::string>());

    int tütÖÄ = 42;

    for( auto x : vi ) {
        std::cout << x << " ";
    }
    std::cout << std::endl;
    std::sort(vi.begin(), vi.end(), MySmaler());
    for( auto x : vi ) {
        std::cout << x << " ";
    }
    std::cout << "\nFiles (" << tütÖÄ << "):\n";

    std::vector<FileInfo> vf {{"aa", 1234}, {"bbb", 4711}, {"LauneBär", 123456789012}};
    std::sort(vf.begin(), vf.end(), MyGrater());
    for( auto f : vf ) {
        std::cout << f.Name  << ": " << f.Length << endl;
    }
    std::cout << std::endl;


    std::vector<FileInfo *> vpf;
    std::sort(vpf.begin(), vpf.end(), greaterFile);

    [](int i) {cout << i << endl; }(5);

    [tütÖÄ](const char * name) { cout << "lambda - " << name << " : " << tütÖÄ << endl; } ( "jaja");


    std::function<void()> f1 = []() {cout << "a" << endl; } ;
    std::function<void(void)> f2 = []() {cout << "b" << endl; } ; ;
    std::function<int(int x, std::string y)> f3 = [](int x, std::string s ) {cout << x << " - " << s << endl; return x; };
    std::function<std::string(int x)> f4 = [](int x ) {cout << x << " - " << endl; return string("Hallo"); };
    std::function<std::string(int x, std::function<std::string(int)>)> f5 =  [](int x, std::function<std::string(int)> _fx ) {cout << x << " - " << _fx(x) << endl; return  _fx(x); };

    f1();
    f2();
    cout << f3(23, "Testen macht Spass!!") << endl;
    cout << f5(42, f4) << endl;

}

int main() {
    test();
    return 0;
}