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Entries from Sunday, June 22. 2008

Sunday, June 22. 2008

Blütenporn? Kann ich auch!

Kris erklärt Blütenporn zum neuen Katzencontent. Na dann, hier mein Blütenporn:
Blümchen und Bienchen (oder so)...


Eine Blüte der ca. 50 Rosensorten aus dem Rosengarten meiner Tante


Fragt nicht, was für eine Blüte das ist...
Posted by Andreas Krennmair at 22:00 | Comments (2) | Trackbacks (0)
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Evolution of a C++ Programmer

Learned basic C++ from an inadequate tutorial.
  1. #include <iostream.h>
  2. using namespace std; // thanks, joe
  3. void main(int argc, char** argv) {
  4.         cout << "Hello, world!" << endl;
  5. }

Learned basic C++ from a slightly better tutorial.
  1. #include <iostream>
  2. using namespace std;
  3. int main(int argc, char* argv[]) {
  4.         cout << "Hello, world!" << endl;
  5.         return 0;
  6. }

Learned about namespace pollution.
  1. #include <iostream>
  2. int main(int argc, char* argv[]) {
  3.         std::cout << "Hello, world!" << std::endl;
  4.         return 0;
  5. }

Learned about classes.
  1. #include <iostream>
  2. #include <string.h>
  3. class Hello {
  4. private:
  5.         char* msg;
  6. public:
  7.         Hello() {
  8.                 this->msg = strdup("Hello, world!");
  9.         }
  10.         ~Hello() {
  11.                 delete this->msg;
  12.         }
  13.         char* hello() {
  14.                 return this->msg;
  15.         }
  16. };
  17. int main(int argc, char* argv[]) {
  18.         Hello* hello = new Hello();
  19.         std::cout << hello->hello() << std::endl;
  20.         delete hello;
  21.         return 0;
  22. }

Learned about the C++ string container.
  1. #include <iostream>
  2. #include <string>
  3. class Hello {
  4. private:
  5.         std::string msg;
  6. public:
  7.         Hello() {
  8.                 this->msg = "Hello, world!";
  9.         }
  10.         std::string hello() {
  11.                 return this->msg;
  12.         }
  13. };
  14. int main(int argc, char* argv[]) {
  15.         Hello hello;
  16.         std::cout << hello.hello() << std::endl;
  17.         return 0;
  18. }

Found out about the STL.
  1. /usr/lib/gcc/x86_64-unknown-linux-gnu/4.3.1/../../../../include/c++/4.3.1/bits/ios_base.h: In copy constructor ‘std::basic_ios<char, std::char_traits<char> >::basic_ios(const std::basic_ios<char, std::char_traits<char> >&)’:
  2. /usr/lib/gcc/x86_64-unknown-linux-gnu/4.3.1/../../../../include/c++/4.3.1/bits/ios_base.h:783: error: ‘std::ios_base::ios_base(const std::ios_base&)’ is private
  3. /usr/lib/gcc/x86_64-unknown-linux-gnu/4.3.1/../../../../include/c++/4.3.1/iosfwd:52: error: within this context
  4. /usr/lib/gcc/x86_64-unknown-linux-gnu/4.3.1/../../../../include/c++/4.3.1/iosfwd: In copy constructor ‘std::basic_ostream<char, std::char_traits<char> >::basic_ostream(const std::basic_ostream<char, std::char_traits<char> >&)’:
  5. /usr/lib/gcc/x86_64-unknown-linux-gnu/4.3.1/../../../../include/c++/4.3.1/iosfwd:61: note: synthesized method ‘std::basic_ios<char, std::char_traits<char> >::basic_ios(const std::basic_ios<char, std::char_traits<char> >&)’ first required here
  6. test.cpp: In function ‘int main(int, char**)’:
  7. test.cpp:7: note: synthesized method ‘std::basic_ostream<char, std::char_traits<char> >::basic_ostream(const std::basic_ostream<char, std::char_traits<char> >&)’ first required here
  8. test.cpp:7: error:   initializing argument 3 of ‘_Funct std::for_each(_IIter, _IIter, _Funct) [with _IIter = __gnu_cxx::__normal_iterator<char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, _Funct = std::basic_ostream<char, std::char_traits<char> >]’
  9. /usr/lib/gcc/x86_64-unknown-linux-gnu/4.3.1/../../../../include/c++/4.3.1/bits/stl_algo.h: In function ‘_Funct std::for_each(_IIter, _IIter, _Funct) [with _IIter = __gnu_cxx::__normal_iterator<char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, _Funct = std::basic_ostream<char, std::char_traits<char> >]’:
  10. test.cpp:7:   instantiated from here
  11. /usr/lib/gcc/x86_64-unknown-linux-gnu/4.3.1/../../../../include/c++/4.3.1/bits/stl_algo.h:3791: error: no match for call to ‘(std::basic_ostream<char, std::char_traits<char> >) (char&)’

Mastered the basic containers of the STL.
  1. #include <iostream>
  2. #include <string>
  3. #include <vector>
  4. int main(int argc, char* argv[]) {
  5.         std::string hello = "Hello, world!";
  6.         std::vector<char> v;
  7.         for (unsigned int j = 0; j < hello.length(); ++j) {
  8.                 v.push_back(hello[j]);
  9.         }
  10.         std::vector<char>::iterator i;
  11.         for (i = v.begin(); i != v.end(); ++i) {
  12.                 std::cout << <strong>i;
  13.         }
  14.         std::cout << std::endl;
  15.         return 0;
  16. }

Mastered the STL.
  1. #include <iostream>
  2. #include <string>
  3. #include <algorithm>
  4. class printc { public: void operator() (char c) { std::cout << c; } };
  5. int main(int argc, char</strong> argv[]) {
  6.         std::string hello = "Hello, world!";
  7.         std::for_each(hello.begin(), hello.end(), printc());
  8.         std::cout << std::endl;
  9.         return 0;
  10. }

Read the C++ FAQ Lite and realized C++ mastery is impossible.
  1. #include <iostream>
  2. int main(int argc, char* argv[]) {
  3.         std::cout << "Hello, world!" << std::endl;
  4.         return 0;
  5. }

Read the C++ FQA Lite.
  1. #include <stdio.h>
  2. int main(int argc, char* argv[]) {
  3.         printf("Hello, world!\n");
  4.         return 0;
  5. }

Heard of 4chan and wound up in /b/.


        HAI

        CAN HAS STDIO?

        VISIBLE "HAI WORLD!"

        KTHXBYE

Found a replacement for /b/ after finding it overrun by ``cancer'' and ``newfags.''
One word, the forced indentation of code. Thread over. Also, read SICP!

Read SICP after months of telling people to read SICP.
  1. (display "Hello, world!")
  2. (newline)

Achieved Satori after re-reading SICP every day for many years.
  1. void main() { puts("Hello, world!"); }

(gefunden irgendwo auf 4chan, Dank an nion)
Posted by Andreas Krennmair at 20:01 | Comments (0) | Trackbacks (0)
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(Page 1 of 1, totaling 2 entries)

About Me



Andreas Krennmair, software engineer, open-source developer, currently living and working in Berlin, Germany.

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