King Ethan

The proper title of this article is User:King Ethan.

User:King Ethan is a BF-derived language created by King Ethan.

Commands

The language's command repertoire constitutes a derivation of brainfuck's, yet deviating in those constituents relevant to the special input and output concept.

Instruction	BF translation	Description
[	<	Move pointer left.
]	>	Move pointer right.
+	+	Increment cell under pointer.
-	-	Decrement cell under pointer.
.	N/A	Access standard output (destination).
,	N/A	Access standard input (journey).
{	[	Jump past the matching } if the cell under the pointer is 0.
}	]	Jump back to the matching { if the cell under the pointer is nonzero.
&	N/A	Access the value of the cell under the pointer (journey or destination).
>	N/A	Journey operator, assigns what's on the left to what's on the right.

Cells marked "N/A" are slightly harder to translate:

• To get input, send the input to the current cell like this: ,>&, using the input, journey, and current cell operators.
• To set output, send the current cell to the output in a similar fashion: &>.

Examples

The classical Hello World! program can be designed in this fashion:

++++++++{]++++{]++]+++]+++]+[[[[-}]+]+]-]]+{[}[-}]]&>.]---&>.+++++++&>.&>.+++&>.]]&>.[-&>.[&>.+++&>.------&>.--------&>.]]+&>.]++&>.

A traditional solution to the infinite cat program involves the following:

+{,>&&>.}

However, by utilization of the interrelation betwixt journey and destination, we might transmit the input (,) immediately to the output (.), skipping a temporary storage in a memory cell.

+{,>.}

Interpreter

• Common Lisp implementation of the King Ethan programming language.