NoError
NoError is a stack based esolang created by User:Brain Boy 53. It is designed to have accept any string of ascii characters from ascii value 32 (" ") to ascii value 126 ("~"). IF YOU FIND AN ERROR, GO TO THE TALK PAGE AND SEND AN ERROR REPORT IN THE GOOGLE FORM.
Commands
A space is a nop.
An exclamation mark pops the top value of the stack and pushes a 1 if the value popped is a 0, and pushes a 1 otherwise.
A quotation mark toggles stringmode, exactly like it does in Befunge. But a lowercase l doesn't work.
A hashtag pops two values, a and b, and if a is 0, jump forwards b + 1 characters.
A dollar sign duplicates the top value on the stack.
A percentage sign pops two values, a and b, and pushes a mod b. If b is 0, a 0 is pushed.
An ampersand pops two values, a and b, and pushes a 1 if neither a nor b are 0, otherwise, it pushes a 0.
An apostrophe pops the top value off the stack.
A left parenthesis pops a value, a, and jumps forward in the code a + 1 characters.
A right parenthesis pops a value, a, and jumps backward in the code a - 1 characters.
An asterisk pops two values, a and b, and pushes their product.
A plus pops two values, a and b, and pushes their sum.
A comma pops the top value from the stack, and outputs it's corresponding ascii character mod 128.
A minus pops two values, a and b, and pushes a-b.
A period pops the top value from the stack, and outputs it as an integer.
A slash pops two values, a and b, and pushes a/b rounded to the nearest integer. If b is 0, a 0 is pushed.
The numbers 0-9 push their value onto the stack.
A colon gets input from the user and pushes it to the stack. If the user doesn't write an integer, the program prints, (Input a number this time) and takes another input. If the user types an integer this time, the program pushes it to the stack, but if not, the program asks for an integer again, the same way it did previously until the user inputs an integer.
A semi-colon does the same thing as a colon but with a single character, and says (Input a single character this time) if the user doesn't type a single character.
A less than sign will pop two values, a and b, and push a 1 if a is less than b, otherwise it pushes a 0.
An equal sign will pop two values, a and b, and push a 1 if a is equal to b, otherwise it pushes a 0.
A greater than sign will pop two values, a and b, and push a 1 is a is greater than b, otherwise it pushed a 0.
A question mark will print the stack as a list. It is a debug command.
An at sign pops two values, a and b, and if a is 0, it goes to place b + 1 in the code.
A left bracket, pops one value, and goes to spot of the value popped in the code + 2.
A back slash swaps the top two values.
A right bracket goes to the beginning of the code.
An uptick clears the stack.
An underscore prints a random character.
A grave accent runs a random command.
A left brace pops two values, a and b, and swaps values a and b in the stack counting from the top of the stack.
A right brace puts the top value of the stack at the bottom.
A pipe ends the program
A tilde pushes a random number from 0 to 9 to the top of a stack.
Modules
Modules are upper and lowercase letters. Lowercase modules, mini modules, have small program snippets, while uppercase letters, program modules, are fully fleshed out programs.
Mini Modules
| Letter | Use | NoError Program Equivalent |
|---|---|---|
| a | Adds one to the top value of the stack | 1+ |
| b | Turns the top two values into binary values | \!!\!! |
| c | Pops the top value of the stack and pushes its cube. | $$** |
| d | Subtracts one from the top value of the stack | 01-+ |
| e | Pops the top value from the stack, and ends the program if it is a 0. | !1#| |
| f | Duplicates the top two values of the stack. (Ex. the stack goes from x y to x y x y.) | \$13{$23{ |
| g | Multiplies the top value of the stack by 93. | 84*1-3** |
| h | Does a random operation a random-ish amount of times, and shows the stack between each random operation. | 0$`?07-# |
| i | Creates NoError code that is six characters long. | ______ |
| j | "h" mini module, but it doesn't show the list. | 0$`06-# |
| k | Starts a comment | 0" |
| l | Ends a comment | "'$!07-# |
| m | Pushes a biiiiiiiig number to the stack | ~a~a~ac*c*c |
| n | Pops the top two values off the stack and pushes the bitwise nor result. | o! |
| o | Pops the top two values off the stack and pushes the bitwise or result. | \!\!&! |
| p | Prints and pops the top value of the stack as an ASCII character mod 128 and a newline. | .91+. |
| q | Does the same thing as the 'p' mini module but prints a questionmark, a newline, and takes in input as an ASCII character. | ."?".91+.: |
| r | Prints all of the values off the stack as ASCII characters untill the is a 0. | ,$!07-# |
| s | Pops the top value of the stack and pushes its square | $* |
| t | Duplicates the top value of the stack 12 times. | $$$$$$$$$$$$ |
| u | Runs every special character command. | `-=~!@#$%^&*()_+[]\{}|;':",./<>? |
| v | Runs every special character command 100 times. | uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu |
| w | Adds the top ten values of the stack together. | ++++++++++ |
| x | Preforms a bitwise xor of the top two values of the stack (it does pop them). | =! |
| y | Is a "." but it doesn't pop the top value off the stack. | $. |
| z | The same thing as the "y" mini module but with "," | $, |
Mega Modules
| Letter | Use | NoError Program Equivalent |
|---|---|---|
| A | ||
| B | ||
| C | ||
| D | ||
| E | ||
| F | ||
| G | ||
| H | Prints "Hello, World!" | "!dk"a"roW ,ok"a$"eH",$!07-# |
| I | ||
| J | ||
| K | ||
| L | ||
| M | ||
| N | ||
| O | ||
| P | ||
| Q | Prints "Q" (to be a quine). | "Q", |
| R | ||
| S | ||
| T | ||
| U | ||
| V | ||
| W | Prints "!dlroW ,elloH" | "Hek"a$"e, Work"a"d!"r |
| X | ||
| Y | ||
| Z |
Popping from an empty stack gives a 0.
Sometimes the interpreter says, "Something went wrong with the roll command" Since it is in the specifications, though, it's not an error.
Going to a negative valued position in the code, makes the code go to the beginning.
Example Programs
Hello, World!
"!dk"a"roW ,ok"a$"eH",$!07-#
Here's one with no letters:
56+3*91+$*$8+$6+$3-91+8*7+48*56+4*91+$$*+1+$3-$$7-98*,$!07-#
Here's one using modules:
H
Cat
5-;,#
Truth Machine
:$.$!08-#
Infinite Loop
]
Note that the space in the beginning is necessary. Here's a randomly generated infinite loop.
]( @>8;&*'@@/#:4,\5<\[!2/5%"*!5-93):@)/$*\4#8655.%6@[8^>:$?]]591.:9:6 64 )?*24$4-= ]0,!%2[><-**$=.*%.9!*#)>6#0<>=;;-.$8+?1"&;() ,";".([$1]5(6:9>"*!;.),=#;99 *\];></5,-$!=*6<"1%"745?3);];>->9%%)$82?2&<)]:+/5<5),.?3#=)20&<4./)%>31%-04=0*5'/@509!(87#-#(=6[*&>'@,;>&):=:#1'/,,3![<2,\);[/#?,?<^(,8!\6["'=(!$3);+6-8#?^3#.\#[.$,0>>2*[1@.05:07#&3]?0*\'=#&@&$2*9\66&83':3 %*>;.-[;+, '*!);:5&\4<!=,@,,;295?+238+?%#]76831;1!(170=+\6'-914?6=5>9,-#<\::(;,$1?#7?:0+8!?];@#,6@>#.5/4$ @; 95$#:].#9-*9*"&[\'3&;$^)7;,<""*.^$'<^=%\?&][/,7]1[8' ([=1#$"" 6*.*&<?@\;%)5::>:'43'#(88$%('<1- >@4613%*(7064>76/5] ;0)2)-8:5,+#+2&4@$3)#)<)>2/+17(>%'1$/^06%;7/?=<'3=3&04:9#^9%:]&4)*"1^??*[,@!;*1.3)<"&6:,>1#$;&-.8![,3 ^ -:=)/&2;0-.*5].3)&]'1=%]5]3+%35[1!??"1;+/0-08,*1$4*=[45;>'^68>7.%+0,;*1%956>!]#'+&+,]4;]8%[@?7@^!]"-6\3 '4113#<('+ ]>40'>([=^3\$:,35#'%" ]!;#*.(9(%-)'17<2!]6>@%&/\@0<3'!:5,:])7<,==!4$]6$]\%>18,$4=#3,[*@30437[:;9,2*19)3=*5=^!'.9;(96%-,32[<@=:37)+%"\@^0\@$!11$(33,(+74-=#]?$]["'-92:=>]!(>0:\6<4#,28=[:)+ ^>.1[/#
Quine
Hello, World!
This works because the "H" prints "Hello, World", and the "e" ends the program because the top (and only) value of the stack is 0.
Q