Clip/Examples

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Hello world

"Hello world

Self-explanatory, but note that the closing quotation mark is not needed.

Cat

When compiled, this is expanded to:

[M ]

Thus, the main supplier hits the end of the program, so it asks the user for the next line of input.

Quine

-12.3

A less trivial quine:

F"[Fx{'F\xx`"[Fx{'F\xx`

Or just:

[t+t\t]"[t+t\t]"

Factorial

r*`,On
r   .- reduce                     -.
 *`  .- with multiplication        -.
 ,   .- the list of numbers from   -.
  O   .- 1           to             -.
  n   .- the number represented by  -.

[implicit] the next line of input.

Fibonacci (inefficient)

Fn[Fx?<x3O]+F(xF((x
F    .- apply the function F to     -.
 n    .- the number represented by   -.

[implicit] the next line of input

[Fx  .- define F as a function of x -.
   ?    .- if                          -.
    <x3  .- x is less than 3            -.
    O    .- then 1                      -.
   ]    .- else                        -.
    +    .- the sum of                  -.
     F    .- the function F applied to   -.
      (x   .- one less than x             -.
     F    .- the function F applied to   -.
      (    .- one less than               -.
       (x   .- one less than x             -.

Fibonacci (efficient)

FZOn[Fx[y[z?zFy+xy(z]x]}}
F    .- apply the function F to     -.
 Z    .- 0                           -.
 O    .- 1                           -.
 n    .- the number represented by   -.

[implicit] the next line of input

[Fx  .- define F as a function of x -.
   [y   .- a function of y             -.
     [z   .- a function of z             -.
       ?    .- if                          -.
        z    .- z isn't zero                -.
        F    .- then apply F to             -.
         y    .- y                           -.
         +xy  .- the sum of x and y          -.
         (z   .- one less than z             -.
       ]    .- else                          -.
        x    .- x                             -.
       ]    .- end if statement              -.
     }    .- return function of z        -.
   }    .- return function of y        -.