One Time Cat

A One Time Cat program is a variation of the Cat program which only reads a single character. The program form was created by User:DanielE. Such a program is generally easier to implement than a cat program.

Examples

Python 3

print(__import__('sys').stdin.read(1))

brainfuck

,.

Malbolge

ubO

><>

io;

Befunge-93

~,@

Shakespeare

The One-Time Cat.

Romeo, the commander.
Juliet, the obeyer.

    Act I: Le Program.

    Scene I: The copying of the user.

[Enter Juliet and Romeo]

Romeo:
 Open your mind.
 Speak your mind!

[Exeunt]

C

#include<stdio.h>
main(){putchar(getchar());}

Binaryfuck

101100

Bussin

input("")(fn (in) {
    if (len(in) == 0) {
        println("")
    } else {
        println(charat(in, 0))
    }
})

Bussin X

Can also use the same as in Bussin.

yap("")(bruh (in) {
    sus (len(in) fr 0) {
        waffle("")
    } impostor {
        waffle(charat(in, 0))
    }
})

Deadbird

gc

DNA-Sharp

Symbol form

      G--------C
      G--------C
      C--------G
       C-------G
       G------C
        A----T
         A--T
          TA
         C--G
        C----G
       A------T
       A-------T
      G--------C
      T--------A
      A--------T
      C-------G
       G------C
        C----G
         T--A
          CG
         C--G
        C----G
       T------A
      T-------A
      T--------A
      C--------G

Line form (simplified)

GCGCGCAT

Emmental

,.

Lenguage

Print the 1st character of the text in input

Letterfuck

in(char)
out(char)

Bytecode: AFN

Ook!

Ook. Ook! Ook! Ook.

ORK

Being as succinct as possible, against the spirit of the language.

When this program starts:
There is a word called x.
There is an inputter called y.
There is a scribe called z.
y is to readOne x.
z is to write x.

Rotary phone

Talk
Dial
Responce

Sakana

読書

Scratch

Text form:

when flag clicked
ask [One Time Cat] and wait
say (letter (1) of (answer))

Stacky

ioe

Unary

• Binary number: 0b1101100
• Hexadecimal: 0x6C
• Decimal: 108

0000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000

Usernames

User:Esolang lover123 User:PrySigneToFry User:ais523

Whitespace

Visible representation

[SPACE][SPACE][SPACE][SPACE][LF]
[SPACE][LF]
[SPACE][TAB][LF]
[TAB][SPACE][TAB][TAB][TAB][TAB][LF]
[SPACE][SPACE][LF]
[LF]
[LF]

Actual program that you should be able to copy

With comments

PUSH-0    
DUPLICATE-TOP 
 READ-CHAR	
	 RETRIEVE-HEAP			OUT-CHAR	
  HALT

!frjnrehrbwgyrigbyieurgbyfaerkhbvrwgtr.

v

嘭！哐！叮！呲！咣！+

操！咣！

™

Type 49

Translation of Ook!

™®®™

Type 51

Same as in Python.

Type 53

Same as in Befunge-93.

~,@

Type 54

Same as Unary.

0000000000000000000000000000000000000000000000000000000000000000000000000
00000000000000000000000000000000000

Type 58

Same as 嘭！哐！叮！呲！咣！+

Type 67

Same as Python.

See also

• Cat program