How to split a delimited string in Ruby and convert it to an array

Question

I have a string   1 2 3 4   and I d like to convert it into an array    1 2 3 4    How

User · Accepted Answer

gt  gt   1 2 3 4  split        gt    1    2    3    4     Or for integers    gt  gt   1 2 3 4  split      map    s  s to i     gt   1  2  3  4    Or for later versions of ruby     1 9 - as pointed out by Alex     gt  gt   1 2 3 4  split      map  amp  to i    gt   1  2  3  4

User · Answer

1 2 3 4  split      as strings   1 2 3 4  split      map    s  s to i   as integers

User · Answer

For String Integer without space as String  arr    12345   arr split      output    1   2   3   4   5     For String Integer with space as String  arr    1 2 3 4 5   arr split       output    1   2   3   4   5     For String Integer without space as Integer  arr    12345   arr split     map  amp  to i   output   1 2 3 4 5    For String  arr    abc   arr split      output    a   b   c     Explanation    arr -  string which you re going to perform any action  split   -  is an method  which split the input and store it as array     or     or     -  is an value  which is needed to be removed from given string

User · Answer

12345  each char map  amp  to i    each char does basically the same as split      It splits a string into an array of its characters   hmmm  I just realize now that in the original question the string contains commas  so my answer is not really helpful  -

User · Answer

the simplest way to convert a string that has a delimiter like a comma is just to use the split method    1 2 3 4  split         1    2    3    4     you can find more info on how to use the split method in the ruby docs      Divides str into substrings based on a delimiter  returning an array   of these substrings       If pattern is a String  then its contents are used as the delimiter   when splitting str  If pattern is a single space  str is split on   whitespace  with leading whitespace and runs of contiguous whitespace   characters ignored       If pattern is a Regexp  str is divided where the pattern matches    Whenever the pattern matches a zero-length string  str is split into   individual characters  If pattern contains groups  the respective   matches will be returned in the array as well       If pattern is omitted  the value of    is used  If    is nil  which is   the default   str is split on whitespace as if       were specified       If the limit parameter is omitted  trailing null fields are   suppressed  If limit is a positive number  at most that number of   fields will be returned  if limit is 1  the entire string is returned   as the only entry in an array   If negative  there is no limit to the   number of fields returned  and trailing null fields are not   suppressed

[arrays] How to split a delimited string in Ruby and convert it to an array?

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