Debugging code challenges for ShipIt! at $BASH

flags.swift

enum VNodeFlag: UInt32 {
    case Delete = 0x00000001
    case Write = 0x00000002
    case Extended = 0x00000004
    case Attrib = 0x00000008
    case Link = 0x00000010
    case Rename = 0x00000020
    case None = 0x00000080
}

struct Flag {
    var flagType: VNodeFlag
    var description: String
}

var actions = [
    Flag(flagType: .Delete, description: "deletes stuff"),
    Flag(flagType: .Revoke, description: "revokes a permission"), // There is no .Revoke Flag in the enum.
    Flag(flagType: .Link, description: "links nodes"),
    Flag(flagType: .Delete, description: "deletes more stuff"),
]

for action in actions {
    print("This \(action.flag) flag \(action.description)") // action.flag should be action.flagType
}

force.swift

func jediGreet(name: String, ability: String) -> (farewell: String, mayTheForceBeWithYou: String) {
  return ("Good bye, /(name).", " May the /(ability) be with you.") // String interpolation in Swift is done with "\" not "/"
}

let retValue = jediGreet(name: "old friend", ability: "Force")
print(retValue.farewell)
print(retValue.MayTheForceBeWithYou) // should be retValue.mayTheForceBeWithYou (uppercase M is the error)

hex.py

import re


def hex_number_is_valid(number):
    hex_pattern = re.compile('^[0-9a-F]+$') # This regex is straight up invalid.
    return hex_pattern.match(number)

if hex_number_is_valid('AEF779'):
    print('This is a valid hexadecimal number.')

mars.py

import requests

rover_url = 'https://api.nasa.gov/mars-photos/api/v1/rovers/curiosity/photos'
parameters = {'api_key': 'DEMO_KEY', 'sol': '1324'}

response = requests.get(rover_url, params=parameters)

for photo in response['photos']: # response is just a Response object. The JSON was never parsed.
	print(photo['img_src'])

multiply.swift

func applyMutliplication(value: Int, multFunction: (Int) -> Int) -> Int {
  return multFunction(value)
}

for i in [1, 2, 3, 4 5, 6, 7, 8, 9, 10] { // Missing comma in the array
    var result = applyMutliplication(value: i, multFunction: {value in
      num * 3 // There is no variable named "num"
    })
    print(result)
}

read_file.lua

function read_file(file)
    local input = io.open(file, r) -- the 'r' flag should be a string.

    if input ~= nil then
        io.input(input)
        local content = io.read()
        io.close(input)
    end

    return content -- content is a local variable, so it can't be accessed here.
end

sockets.py

import socket

UDP_IP = 127.0.0.1 # this needs to be a string.
UDP_PORT = 5000

sock = socket.socket(socket.AF_INET,
                     socket.SOCK_DGRAM)
socket.bind((UDP_IP, UDP_PORT)) # should be sock.bind

while True:
    data, addr = sock.recvfrom(1024)
    print("received message: {}".format(data))) # One extra closing paren

timeMachines.swift

let timeMachines = ["DeLorean", "Epoch", "Bill and Ted's Phone Booth"]
var activations = timeMachines.map({
  (timeMachine: String) -> String in
  "\(timeMachine) has been activated!"
})

print(activation) // Variable name doesn't exist because it should be "activations" plural.