iterating over each character of a String in ruby 1 8 6 each char

Question

I am new to ruby and currently trying to operate on each character separately from a base String in ruby  I am using ruby 1 8 6 and would like to do something like    ABCDEFG  each char do  i    puts i end   This produces a undefined method  each char  error   I was expecting to see a vertical output of   A B C D   etc   Is the each char method defined only for 1 9  I tried using the plain each method  but the block simply ouputs the entire string in one line  The only way I figure how to do this  which is rather inconvenient is to create an array of characters from the begining     A   B   C   D         each do i    puts i end   This outputs the desired   A B C   etc   Is there perhaps a way to achive this output using an unmodified string to begin with   I think the Java equivalent is   for  int i   0  i  lt  aString length    i       char currentChar   aString charAt i     System out println currentChar

User · Answer

Extending la f0ka s comment  esp  if you also need the index position in your code  you should be able to do  s    ABCDEFG  for pos in 0   s length     puts s pos  chr end   The  chr is important as Ruby  lt  1 9 returns the code of the character at that position instead of a substring of one character at that position

User · Answer

I have the same problem  I usually resort to String split    ABCDEFG  split     each do  i    puts i end   I guess you could also implement it yourself like this   class String   def each char     self split     each    i  yield i     end end   Edit  yet another alternative is String each byte  available in Ruby 1 8 6  which returns the ASCII value of each char in an ASCII string    ABCDEFG  each byte do  i    puts i chr   Fixnum chr converts any number to the ASCII char it represents end

User · Answer

But now you can do much more   a    cruel world   a scan   w              gt    cruel    world    a scan                  gt    cru    el     wor    a scan                  gt     cru      el       wor     a scan                  gt     cr    ue      l     wo

User · Answer

quot ABCDEFG quot  chars each do  char    puts char end  also  quot ABCDEFG quot  each char   char  p char   Ruby version  gt 2 5 1

User · Answer

there is really a problem in 1 8 6  and it s ok after this edition  in 1 8 6 you can add this   requre  jcode

[ruby] iterating over each character of a String in ruby 1.8.6 (each_char)

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