## Generated by Codox

# Propeller 0.3.2

# propeller.problems.PSB2.twitter

TWITTER from PSB2 Given a string representing a tweet, validate whether the tweet meets Twitter’s original character requirements. If the tweet has more than 140 characters, return the string “Too many characters”. If the tweet is empty, return the string “You didn’t type anything”. Otherwise, return “Your tweet has X characters”, where the X is the number of characters in the tweet.

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

### random-int

`(random-int)`

Random integer between -100 and 100

### train-and-test-data

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