SDAPL

SDAPL (Super Duper Awesome Programming Language) is a stack-based esoteric programming language created in 2026. It features a unique marker system for flow control instead of traditional loops and conditionals. Was created by User:ReddoYT, and also was created because of how much I like videos of Truttle1, and just I like the idea of programming languages being useless(mine is not, kinda).

Concept

Instead of functions or loops, you create named blocks called "markers" and control flow with stack-based conditions.

Language Basics

The Stack

All operations work on a stack (LIFO - Last In, First Out).

Markers

Markers are named code blocks that can be executed later:

( myMarker
# code here
)

Command Reference

Command	Description	Example
( name	Start marker	( loop
)	End marker	)
run name	Execute marker	run loop
notempty m1 m2	If top ≠ 0 → m1, else → m2	notempty yes no
if pos1 greater/less/equals pos2 m1 m2	Compare stack items	if 0 greater 1 bigger smaller
stop	Stop execution	stop
get	Input (number/char)	get
get int	Input integer	get int
get ascii	Input char → ASCII	get ascii
get string	Input string → ASCII codes	get string
asciify text	Text → ASCII codes in stack	asciify Hello
introduce	Print top as character	introduce
introduce #	Print top as number	introduce #
dump	Show entire stack	dump
welcome value	Push to stack	welcome 42
welcome random	Push random number	welcome random
clone	Duplicate top item	clone
copyfrom n	Copy item n from top	copyfrom 2
swap	Swap top two items	swap
reverse	Reverse entire stack	reverse
insert pos val	Insert at position	insert 2 99
length	Push stack size	length
pop	Remove top item	pop
remove n	Remove item n from top	remove 1
add	Addition	add
sub	Subtraction (second - top)	sub
mul	Multiplication	mul
div	Integer division	div
mod	Modulo	mod

Examples

Simple Hello World

welcome !
welcome d
welcome l
welcome r
welcome o
welcome W
welcome 32
welcome o
welcome l
welcome l
welcome e
welcome H
introduce
introduce
introduce
introduce
introduce
introduce
introduce
introduce
introduce
introduce
introduce
introduce

Advanced Hello World (with loop)

asciify Hello World!
( end
stop
)
( print
pop
introduce
run loop
)
( loop
length
notempty print end
)
run loop

Countdown 15 to 0

welcome 16
( end
pop
welcome E
welcome n
welcome d
reverse
introduce
introduce
introduce
)
( loop
welcome 1
sub
clone
introduce #
welcome 10
introduce
notempty loop end
)
run loop

Truth Machine

get ascii
welcome 48
sub
( isZero
introduce #
)
( isNot
clone
introduce #
run isNot
)
notempty isNot isZero

Number Comparison

welcome 10
welcome 5
( greater
asciify First is greater
stop
)
( lessequal
asciify Second is greater or equal
stop
)
if 0 greater 1 greater lessequal

String reverse

asciify === Reversing program ===
( end
)
( print
pop
introduce
run loop
)
( loop
length
notempty print end
)
run loop
pop
welcome 10
introduce
get string
reverse
run loop

Working calculator(no floats)

# Calculator
get int
get int
get ascii
( plus
pop
pop
add
introduce #
)
( minus
pop
pop
sub
introduce #
)
( multiply
pop
pop
mul
introduce #
)
( divide
pop
pop
div
introduce #
)
( modulo
pop
pop
mod
introduce #
)
( end
stop
)
( print
pop
introduce
run loop
)
( loop
length
notempty print end
)
( error
pop
pop
pop
pop
asciify Sorry, operation doesn't exist
run loop
)
( check5
pop
welcome %
if 0 equals 1 modulo error
)
( check4
pop
welcome /
if 0 equals 1 divide check5
)
( check3
pop
welcome *
if 0 equals 1 multiply check4
)
( check2
pop
welcome -
if 0 equals 1 minus check3
)
welcome +
if 0 equals 1 plus check2

FizzBuzz

( end
)
( FIZZ
pop
asciify Fizz
introduce
introduce
introduce
introduce
run loop
)
( BUZZ
pop
asciify Buzz
introduce
introduce
introduce
introduce
run loop
)
( FIZZB
pop
asciify FizzBuzz
introduce
introduce
introduce
introduce
introduce
introduce
introduce
introduce
run loop
)
( print
pop
clone
introduce #
run loop
)
( c5
pop
clone
welcome 5
mod
notempty print BUZZ
)
( c3
pop
clone
welcome 3
mod
notempty c5 FIZZ
)
( c15
pop
clone
welcome 15
mod
notempty c3 FIZZB
)
( loop
welcome 1
add
welcome 10
introduce
welcome 100
if 1 greater 0 end c15
)
welcome 0
run loop

Implementation

• SDAPL Interpreter - Java implementation