ULSAL

This is still a work in progress. It may be changed in the future.

ULSAL (ultlang's stack apiolanguage) is a heavily wip stack-based programming language by User:Ultlang.

types

each item of the stack has one of these types:

• mrk / marker
• str / string
• num / number
• fnc / function

commands

command	arguments	function
`	0	pushes a marker to the stack
0123456789	0	pushes the respective integer to the stack as a num
' or ´	varies	concatenates items on the stack until a marker is hit. if all components are nums, the result is a num, otherwise it is a str. this, along with both alphabetic characters and spaces pushing themselves, makes `string example' the way to express strings.
+-×÷	2	executes the operation on the two top numbers on the stack (95- returns 4). if any of the arguments is not a number, bees may occur, along with apioforms.
²	1	pushes the top item twice
ⁿ	2	pushes the top item [floor of second from top item value] times. if that value is not a number, bees could arise, followed by beeoids.
⌁	1	"splits" the top item on the stack. this has varying behavior depending on the type and characteristics of the item: str: pushes each character of the string as a separate string integer num: pushes the prime factorisation of the number, smallest to largest, with an additional -1 in case it is negative non-integer num: pushes the floor and then the fractional part of the number
·	0	does nothing (as opposed to the space, which does ¬nothing)
[…]	bees	pushes anything between the brackets as a fnc. works as matching brackets, not the first ] after the [: a[b[c]] should make the stack a: str; b[c]: fnc. note that as opposed to `…', what is between brackets doesn't get executed, thus `88+a' → 16a: str, whereas [88+a] → 88+a: fnc.
ε	1	executes the code in the top stack item. if it's not a function item, bees will happen, and apioids might too.
ᵋ	2	executes the code in the top stack item [floor of second from top item value] times. if it's not a number or the top item is not a function, bees can be expected to take place, and apēs melliferæ could as well.
ℓ	0	pushes the stack length as a number
σ	2	swaps the last two items of the stack
any other	0	pushes the character to the stack as a str

implementations

there are approximately "0" implementations of ulsal. sina ale li utterly trolled