REG.TYPE = STR TRUE

REG.TYPE = STR TRUE is a esolang (made by User:yayimhere) with a register. but the register is a string. it can be modified copied printed ect. REG.TYPE = STR TRUE or R.T=ST's goal is to see if using only a single unbounded string can there be made a turing complete esolang.

overview

the string starts with the following string inside at the start:

fgr45fevre4er5>1<2u31i<y7<3698yugtkhjsdfbjkgdbøfsopgt50r8y69re8988)()UYHJFCŸŸÂ˜{\ÜÁ»Ü‡\}\}\\}≈{}≈\\˜$¢¢‰‰{\}}≈¿

there is no explicit reason for this. REG.TYPE = STR TRUE & "" will start with a empty string
the register is circular so it wraps around. If a parameter has "" its a full string else its a single char

syntax

the syntax of REG.TYPE=STR TRUE:

Caption text

R.T=ST	description	pseudocode
+"A"	will concatenate A with the register	REG concatenate A
[i]"A"	replace what's at index i with A	REG[i] = A
[i]!	replace what's at index i with EOF input	REG[i] = input
\(e)	start at index 0 and do the operation(s) e on the whole string repeat operation until i has been found at index 0 twice	while i < length(REG) do e and i+1
A/(e)	start at index 0 and do the operation(s) e on the string until A is met in the string	while REG[i] != A do e and i+1
#	clear the string	REG = ""
"A"->"B"	replace all instances of A with B	if REG[i] == A do REG[i] = B
o	output the register	print(REG)
[i]o	output whats at index i	print(REG[i])
[i]:A	save the index i with label A. any i used in any instruction can be replaced with a label	A = i
A+=	increment index of label A	A+1
A-=	decrement index of label A	A-1
[i]:+	increment the ascii value of the ascii char at index i	REG[i]+1
[i]:-	decrement the ascii value of the char at index i	REG[i]-1
[i]+"A">	add A after index i	REG[i] concatenate A
[i]+"A"<	add A before index i	reverse(REG[i] concatenate A)
;	line initial ; will make it comment	?

examples

hello, world!:

#+"Hello, world!"o

truth-machine:

#[0]!0/(o)o

looping counter:

#+"*"A/(o[0]+"*"<+"/n")

quine:

+"+#"[1]-o[1]+o#+"#\2^.p\2^,p $,#Z#\1^;J!)\J^pJ,>*![0)\1^*!\1^!)\J^.J,>*!"[0]:I\([I]oI+=)Z/([0]"")[0]""\([I]-I+=)o

turing completeness

this program emulates the 2-tag system that calculates the Collatz sequence:

;  alphabet: {a, b, c}
;  reserved: {E, B, D, I}
;  a -> bc
;  b -> a
;  c -> aaa
;  initial word: aaa

#+"aaaD"  
;setup

I/(
  ; separate head
  [1]+"B"<
  ; halt if only one char left
  "aBD"->"I"
  "bBD"->"I"
  "cBD"->"I"
  ; apply rules
  "aB"->"bcE"
  "bB"->"aE"
  "cB"->"aaaE"
  ; perform second deletion
  "Ea"->""
  "Eb"->""
  "Ec"->""
  "E"->""
)

with no comments and such:

#+"aaaD"I/([1]+"B"<"aBD"->"I"bBD"->"I""cBD"->"I""aB"->"bcE""bB"->"aE""cB"->"aaaE""Ea"->"""Eb"->"""Ec"->"""E"->"")