String to array to string again

[Ellie]

How would I convert a string to an array, and an array to a string again?

Something along the lines of:

@enemy_data = [1, 2, 3, 4]
@enemy_data.to_string # returns "1|2|3|4"
@enemy_data.to_array = # returns [1, 2, 3, 4]

I know .to_s and .to_a exist, but I'm not sure they work for what I want to do. .to_s and .to_a would do:

@enemy_data = [1, 2, 3, 4]
@enemy_data.to_s # returns "1234"
@enemy_data.to_a = # returns ["1234"]

 

[S S Muu]

remember when I sent you that "Network" script for the other server I made? there is a module called "Ex" there that I made, it has the ability to do it. :thumb:

Edit:
here it is:

module Ex
  def self.s_to_a(string,type="|")
    string = string.gsub(type) {|s| s="\n" }
    slut = []
    string.each {|b|
      b = b.gsub("\n") {|s| s="" }
      slut.push(b)
    }
    return slut
  end
  def self.a_to_s(array,type="|")
    slut = ""
    for i in array
      slut += "#{i}|"
    end
    return slut
  end
  def self.h_to_s(hash)
    slut = ""
    hash.each{|key, value|
    slut += "#{key},#{value}|"
    }
    return slut
  end
  def self.s_to_h(string)
    slut = Hash.new
    string = s_to_a(string)
    length = string.length-1
    for i in 0..length
      string[i] = s_to_a(string[i],",")
    end
    for i in 0..length
      slut[string[i][0]] = string[i][1]
    end
    return slut
  end
end

back then when I made it I didn't know how to add functions to the string and array classes so I did it like this.

 

[Ellie]

Oh, thanks .

Wow, you're so good at this you went back in time and gave it me.

 

[S S Muu]

heh
your welcome! :thumb:

oh and it also works with hashes :smile:

 

[ERZENGEL]

Btw there's a shorter way (to do this what you asked):

array = [1, 2, 3, 4]
p array.join('|')  # returns "1|2|3|4"

str = '1|2|3|4'
array = Array.new
str.split('|').each{|i| array << i.to_i}
p array # returns [1, 2, 3, 4]

And nice script, S S Muu ^_^

 

[S S Muu]

well, that works too.

thanks. :smile:

Edit:
I remade it for you so it's easier to use and better coded :thumb:

class String
  def to_array(type = '|')
    self.split(type)
  end
  def to_hash
    ret = {}
    str = to_array
    str.each{|i| a = i.to_array(',');ret[a[0]] = a[1]}
    ret
  end
end

class Array
  def to_string(type = '|')
    self.join(type)
  end
end

class Hash
  def to_string
    ret = ""
    self.each{|k, v| ret += "#{k},#{v}|"}
    ret
  end
end

and this is how you use it

"name|32|woot?".to_array
["name", 32, "woot?"].to_string
"name,anton|level,3|other,none".to_hash
{"name" => "anton", "level" => 3, "other" => "none"}.to_string

 

[Ellie]

Ah, thanks That'll be useful in the future.