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Esoteric Programming Languages Esoteric Programming Languages blinry 17. Esoterischprogrammiernacht Esoteric Programming Languages proof-of-concept artistic expression challenge (for the designer and/or user) joke This presentation: Five Turing-complete languages Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Introduction “esoteric” from Greek esoterikos, “belonging to an inner circle” This presentation: Five Turing-complete languages Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Introduction “esoteric” from Greek esoterikos, “belonging to an inner circle” Esoteric Programming Languages proof-of-concept artistic expression challenge (for the designer and/or user) joke Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Introduction “esoteric” from Greek esoterikos, “belonging to an inner circle” Esoteric Programming Languages proof-of-concept artistic expression challenge (for the designer and/or user) joke This presentation: Five Turing-complete languages Motivation: Small compiler (296 bytes) Minimalist syntax, only eight commands: > < + - , . [ ] “brain fuck” = hard or complicated thing Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Brainfuck Designed by Urban Müller in 1993 Minimalist syntax, only eight commands: > < + - , . [ ] “brain fuck” = hard or complicated thing Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Brainfuck Designed by Urban Müller in 1993 Motivation: Small compiler (296 bytes) “brain fuck” = hard or complicated thing Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Brainfuck Designed by Urban Müller in 1993 Motivation: Small compiler (296 bytes) Minimalist syntax, only eight commands: > < + - , . [ ] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Brainfuck Designed by Urban Müller in 1993 Motivation: Small compiler (296 bytes) Minimalist syntax, only eight commands: > < + - , . [ ] “brain fuck” = hard or complicated thing Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] Input: h Output: 01101000 Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ 3 <]>.[-]>+]-] Output: 01101000 Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h 3 <]>.[-]>+]-] Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Examples 1 >>>,-----.<<<++++++++++. Input: f Output: a←- 1 +++++[->+<] 1 -[>,[<<[-<]++[->+]->-]<<<< 2 <<<<<+[-<++++++++[->++++++ Input: h Output: 01101000 3 <]>.[-]>+]-] 0110100001100101011011000110110001101111 Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Example: ASCII to binary 1 - 2 [ 3 >, 4 [ 5 << Tape 6 [-<] ...00000000 0 0... 7 + 8 +[->+]- 9 >- Input 10 ] 11 <<<<<<<<< hello 12 +[- 13 <++++++++ Output 14 [->++++++<]>. 15 [-] 16 > 17 +]- 18 ] 0110100001100101011011000110110001101111 Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Example: ASCII to binary 1 - 2 [ 3 >, 4 [ 5 << Tape 6 [-<] ...00000000 255 0... 7 + 8 +[->+]- 9 >- Input 10 ] 11 <<<<<<<<< hello 12 +[- 13 <++++++++ Output 14 [->++++++<]>. 15 [-] 16 > 17 +]- 18 ] 0110100001100101011011000110110001101111 Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Example: ASCII to binary 1 - 2 [ 3 >, 4 [ 5 << Tape 6 [-<] ...00000000 255 0... 7 + 8 +[->+]- 9 >- Input 10 ] 11 <<<<<<<<< hello 12 +[- 13 <++++++++ Output 14 [->++++++<]>. 15 [-] 16 > 17 +]- 18 ] 0110100001100101011011000110110001101111 Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Example: ASCII to binary 1 - 2 [ 3 >, 4 [ 5 << Tape 6 [-<] ...00000000 255 0 ... 7 + 8 +[->+]- 9 >- Input 10 ] 11 <<<<<<<<< hello 12 +[- 13 <++++++++ Output 14 [->++++++<]>. 15 [-] 16 > 17 +]- 18 ] h 0110100001100101011011000110110001101111 Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Example: ASCII to binary 1 - 2 [ 3 >, 4 [ 5 << Tape 6 [-<] ...00000000 255 104 ... 7 + 8 +[->+]- 9 >- Input 10 ] 11 <<<<<<<<< ello 12 +[- 13 <++++++++ Output 14 [->++++++<]>. 15 [-] 16 > 17 +]- 18 ] h 0110100001100101011011000110110001101111 Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Example: ASCII to binary 1 - 2 [ 3 >, 4 [ 5 << Tape 6 [-<] ...00000000 255 104 ... 7 + 8 +[->+]- 9 >- Input 10 ] 11 <<<<<<<<< ello 12 +[- 13 <++++++++ Output 14 [->++++++<]>. 15 [-] 16 > 17 +]- 18 ] h 0110100001100101011011000110110001101111 Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Example: ASCII to binary 1 - 2 [ 3 >, 4 [ 5 << Tape 6 [-<] ...00000000 255 104... 7 + 8 +[->+]- 9 >- Input 10 ] 11 <<<<<<<<< ello 12 +[- 13 <++++++++ Output 14 [->++++++<]>. 15 [-] 16 > 17 +]- 18 ] h 0110100001100101011011000110110001101111 Introduction Brainfuck INTERCAL Befunge Malbolge Shakespeare Conclusion Example: ASCII to binary 1 - 2 [ 3 >, 4 [ 5 << Tape 6 [-<] ...0000000 0 255 104... 7 + 8 +[->+]- 9 >- Input 10 ] 11 <<<<<<<<< ello 12 +[- 13 <++++++++ Output 14 [->++++++<]>. 15 [-] 16 > 17 +]- 18 ] h 0110100001100101011011000110110001101111
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