Method Help with Ruby

[flowalex]

So for class I am having issues with the method. Any help is appreciated 

edit added comments to code

def array?(input_str)  letter_array = to_array(input_str)enddef perm  perms = get_permutations(letter_array)  letter = perms.join.downcase end#asks to enter a string of jumble lettersprint "Please enter a string of letters: "input_str = gets.chomp#opens the unix dictionary filedictionary = File.open("dict.txt", "r") #while loop that compares the input to the dictionarywhile line = dictionary.gets  word = line.chomp  perms.each do |perm|  if word == perm    print word, "\n"    exit          end    end

[Guest]

What are the issues. What is the method supposed to do. Comment your code. Debug it. Make an effort.

[flowalex]

I am getting this for the error

Please enter a string of letters: dgo

filename.rb:17:in `<main>': undefined local variable or method `perms' for main:Object (NameError)

 

What are the issues. What is the method supposed to do. Comment your code. Debug it. Make an effort.

 

[Guest]

I am getting this for the error

Please enter a string of letters: dgo

filename.rb:17:in `<main>': undefined local variable or method `perms' for main:Object (NameError)

 

It means that on line 17, you have an undefined variable named "perms". If a variable isn't defined, it means that you need to define it, e.g. assign a value. Where is the assignment happening for that variable?

[flowalex]

It means that on line 17, you have an undefined variable named "perms". If a variable isn't defined, it means that you need to define it, e.g. assign a value. Where is the assignment happening for that variable?r 

Here I updated the code

 

def letter_array?(input_str)

  letter_array = to_array(input_str)

end

def perms

  perms = get_permutations(letter_array)

  letter = perms.join.downcase 

end

#asks to enter a string of jumble letters

print "Please enter a string of letters: "

input_str = gets.chomp

#opens the unix dictionary file

dictionary = File.open("dict.txt", "r")

#while loop that compares the input to the dictionary

while line = dictionary.gets

word = line.chomp

perms.each do |perm|

if word == perm

print word, "\n"

exit

end

end

Now I am getting this error

filename.rb:9:in `perms': undefined local variable or method `letter_array' for main:Object (NameError)

from filename.rb:17:in `<main>'

[Guest]

Here I updated the code

 

Okay, so what did you change here and why?

[flowalex]

Okay, so what did you change here and why?

Added the s to def perm, because i forgot it

[Guest]

Added the s to def perm, because i forgot it

 

Fine, fine. so line 9, what is happening? Or what do you intend to have happen there?

[flowalex]

I want it to get the permutations of the input, the plan of the code is to solve a word jumble puzzle

[Guest]

I want it to get the permutations of the input, the plan of the code is to solve a word jumble puzzle

 

And how is it getting the permutations of the input? What is the actual code itself doing (e.g. by calling a function, storing a result in a variable, ect)

[flowalex]

Well according to my professor this is how it would work: 

 perms = get_permutations(letter_array)

[Guest]

 

Well according to my professor this is how it would work: 

 perms = get_permutations(letter_array)

 

Can you explain what each element in that line is doing? What is "perms"? What does the "=" do? What does "letter_array" mean here?

[flowalex]

perms is the 

= is the assignment operator

letter_array is the letters that have been input by the user

[Guest]

perms is the 

= is the assignment operator

letter_array is the letters that have been input by the user

 

If letter_array is the input, where is it assigned?

[flowalex]

Thank you for your help, I was talking with a classmate and they noticed I made a mistake in the method creation.  Here is the code for future reference

#method creationdef to_array letter  return letter.chars.to_aenddef get_permutations letter_array  return letter_array.permutation.map(&:join)end#asking for user inputprint "Please enter a string of letters: "input_str = gets.chomp#opening the dictionarydictionary = File.open("dict.txt", "r") #assigning the arrayarray = to_array(input_str)#getting the permutationsperms = get_permutations(array)#while loop that compares the permutations with the unix dictionarywhile line = dictionary.gets  perms.each do |perm|    if line.chomp.downcase == perm.downcase      print perm, "\n"      exit    end  endend#closes the dictionary filedictionary.close