## Generated by Codox

# Propeller 0.3.2

# propeller.problems.PSB2.substitution-cipher

SUBSTITUTION CIPHER from PSB2

This problem gives 3 strings. The first two represent a cipher, mapping each character in one string to the one at the same index in the other string. The program must apply this cipher to the third string and return the deciphered message.

Source: https://arxiv.org/pdf/2106.06086.pdf

### -main

`(-main & args)`

Runs the top-level genetic programming function, giving it a map of arguments with defaults that can be overridden from the command line or through a passed map.

### error-function

`(error-function argmap data individual)`

Finds the behaviors and errors of an individual: Error is 0 if the value and the program’s selected behavior match, or 1 if they differ, or 1000000 if no behavior is produced. The behavior is here defined as the final top item on the STRING stack.

### instructions

Stack-specific instructions, input instructions, close, and constants

### map-vals-input

`(map-vals-input i)`

Returns all the input values of a map

### map-vals-output

`(map-vals-output i)`

Returns the output values of a map

### train-and-test-data

Data taken from https://zenodo.org/record/5084812