Neko

Neko is a esolang created to be simple

Exist two types of commands, the commands and subcommands

The commands are used as commands, like in python

The subcommands are used in commands and are writen with ( and )

Codes are represented with { and }

He have this commands:

Caption text

Command	Type	Description
in x replace y with z	Command	Set stack[last] to replace every y with z in x
read x	Subcommand	Read Variable x
x + y	Subcommand	Addition
x - y	Subcommand	Subtraction
x * y	Subcommand	Multiplication
x / y	Subcommand	Division
switch/case	Command	This command are like any switch/case in programing languages
input	Subcommand	Pick an input and return it
random x y	Subcommand	random number from x to y
task c	Command	Create a task and push it to task stack
run n	Command	Run task[x] item of task stack and remove it(if null, run last task)
push x	Command	Push x to stack
pop	Subcommand	Pop stack
join	Subcommand	Join chars into a string
out x	Command	Output x
unicode x	Subcommand	Return the ascii from a decimal
as x	Subcommand	Return the equivalent ascii decimal of charter x
round x	Subcommand	Round number x
task	Subcommand	Pop the task list
shift x y	Command	Shift items x and y in stack
length x	Subcommand	Return length of x
catch x y	Command	Run y until hit a throw command with x
throw x	Command	Jumps out of tag x(see catch)
loop x y	Command	Run y and set x to the script itself
ignore x	Command	Run x and ignoring the return value
x : y	Subcommand	Set variable x to y and return y
empty	Command	Empty the stack

Hello, World!:

out Hello, World!

Cat:

out (input)

Truth-machine

switch (input) {
 case 1 {
  loop x {
   ignore task
   out 1
   task x
   run
  }
 }
 case 0 {
  out 0
 }
}

Interpreter:
Here Neko interpreter in Snap!