Assuming that your data is in a file “data_to_split.txt” in the same
directory,
you can do this:
file_name=“data_to_split.txt”
data_array=IO.readlines(file_name) # reads content of file into an
Array (
each entry = one line)
only_second_entries=[]
data_array.each{|line|
only_second_entries<<(line.split(‘,’)[1]) # note that indices start at
0 in
Ruby
}
p ‘only second entries contains’
p only_second_entries
If you have more complicated patterns that separate your data than just
a
comma,
you can also use split in conjunction with “regular expressions”.
only_second_entries<<(line.split(/,/)[1]) # note that indices
start at 0 in Ruby
These “regular expressions” allow to search for things like “a comma and
then two small letters, followed by at least three numbers and then
anything but
“A””, so there is
room for arbitrary complexity …
Regular expressions are explained in detail here:
_http://www.regular-expressions.info/_
(http://www.regular-expressions.info/)
Best regards,
Axel