f (None1)

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Not to be confused with F.

f is an esolang invented by User:None1.

It is a bf derivative. bf has 8 commands, but f has only 4.


b has these 4 commands - , < and ]. They work like in brainfuck.


Input a byte


Since f has only half of the commands, the power of it is very limited.



import sys
for i in input():
    if i==',':sys.stdin.read(1)
    if i==']':raise Exception('Unmatched ]')

See also