Return to Revisions

#28. Literate Haskell, 256 bytes

.	|+xx<<<"aa"<<<xx+|	.
		
>	g x=elem '<'x&&e%x==e
>	e=tail(show 0)	
>	('<':a)%('>':b)=a%b
>	a%('<':b)=('<':a)%b
>	a%('>':b)='<':e
>	a%(x:b)=a%b{->Hi, Retina!Henry Jams?-}
>	a@(_:_)%_=a
>	a%b=e
	
a	
b	
C	
d	
e	
f	
g	
h	
i	
j	
k	
l	
m	
n	
o	
pppppppppp	
q	3~

Try it online!

Test Driver

My program has 22 characters in the first line, which according to the description of the X86 answer should not work, however it does work, and if I shorten the line to 21 characters it stops working. Not sure why this is the case.

Satisfies

2. The first character is a ..
3. It contains an e.
4. Its length is even.
5. Its length is a perfect square.
6. It contains an a.
7. It contains a > character.
8. Contains the exact string ->.
9. Contains the exact string Hi, Retina!.
10. The sum of the first two Unicode code points is a multiple of 5.
11. The 10-th character is a ".
12. The last non-empty line does not have any duplicate characters.
13. The first line is a palindrome of length > 5.
14. The first line is exactly 21 characters long (not including newline). ???
15. It contains a ?.
16. It contains a |.
17. Contains a +.
18. It is at least 28 lines long.
19. The following characters are used five times in total: !"#$.[\] and the codepoint of the second character is less than 60.
20. Contains Henry Jams? as a continuous substring.
21. The last character is ~.
22. It contains a C
23. Each line contains a tab character.
24. The ninth line contains at least 22 characters, excluding the newline.
25. The tab character can't be the first character on a line
26. The third-to-last character is a tab.
27. There are at least 28 lines, and they are all distinct.
28. There must be a > in the code and angle braces must be balanced

For future answers:

• The first line is a palindrome matching .␣␣␣␣␣␣␣␣"␣"␣␣␣␣␣␣␣␣. (you are free to fill in the ␣s).
• The second character is one of ',16;, or a tab, or one of \x04\x0e\x13\x18\x1d.
• Its length is an even perfect square.
• There are at least 28 lines, and all lines are distinct.
• The ninth line must have at least 22 characters (excluding the newline).
• The last line does not have any duplicate characters.
• Contains the exact strings ->, Hi, Retina!, and Henry Jams?.
• It contains |, + and C.
• Each line contains at least one tab character, but it can't be the first character on a line.
• !". are banned except where necessary:
  • Only ! in Hi, Retina! and the two . and two " in the first line are allowed.
• #$[\] may not appear in the program.
• The program ends with: tab, (whatever), ~.
• Angle braces must be balanced