I am trying to get a file into an array using .scan and I can't seem
to get anything to work properly.
I am reading in a file of email addresses (1 per line) and it all
seems to come in as 1 long string some how. I am trying to use scan
to break it up into an array of emails so that I can do some uniq
checks and validation with other arrays. But I just don't seem to get
it right.
My code right now is as follows:
emails = File.open("/users/lem/desktop/test/
POCs_DNB.txt","r").readlines.map! {|x| x.chomp} # Read in the list
of emails
email.scan(/\S+/) # To mach on spaces (I assume). I thought I would
be matching on new lines
puts email # To verify
When I did an inspect on the email variable The address appeared as
such
File.open("/users/lem/desktop/test/POCs_DNB.txt", "r").each_line do |
line>
line.chomp!
# now you have a single line (sans newline) from your file
end
# no need to close the file either
···
On Feb 4, 7:50 pm, Vell <lovell.mcilw...@gmail.com> wrote:
Hello all,
I am trying to get a file into an array using .scan and I can't seem
to get anything to work properly.
I am reading in a file of email addresses (1 per line) and it all
seems to come in as 1 long string some how. I am trying to use scan
to break it up into an array of emails so that I can do some uniq
checks and validation with other arrays. But I just don't seem to get
it right.
My code right now is as follows:
emails = File.open("/users/lem/desktop/test/
POCs_DNB.txt","r").readlines.map! {|x| x.chomp} # Read in the list
of emails
email.scan(/\S+/) # To mach on spaces (I assume). I thought I would
be matching on new lines
puts email # To verify
When I did an inspect on the email variable The address appeared as
such
"f...@bar.edu\f...@bar.com\f...@bar.gov......"
This is my absolute first time working with .scan and regular
expressions so I have a little bit of a learning curve with this one.
I am trying to get a file into an array using .scan and I can't seem
to get anything to work properly.
I am reading in a file of email addresses (1 per line) and it all
seems to come in as 1 long string some how. I am trying to use scan
to break it up into an array of emails so that I can do some uniq
checks and validation with other arrays. But I just don't seem to get
it right.
scan() returns an array. You don't assign the array to any variable, so
it is discarded.
When I did an inspect on the email variable The address appeared as
such
"foo1@bar.edu\foo2@bar.com\foo3@bar.gov......"
Nowhere in the code you posted does a variable named email exist.
This is my absolute first time working with .scan and regular
expressions so I have a little bit of a learning curve with this one.
Any help is greatly appreciated.
If you expect to get relevant help, you should post a short example
progrram that demonstrates your problem, i.e. an example program that
anyone can run and get the same results you do.
> I am trying to get a file into an array using .scan and I can't seem
> to get anything to work properly.
> I am reading in a file of email addresses (1 per line) and it all
> seems to come in as 1 long string some how. I am trying to use scan
> to break it up into an array of emails so that I can do some uniq
> checks and validation with other arrays. But I just don't seem to get
> it right.
scan() returns an array. You don't assign the array to any variable, so
it is discarded.
> When I did an inspect on the email variable The address appeared as
> such
> "f...@bar.edu\f...@bar.com\f...@bar.gov......"
Nowhere in the code you posted does a variable named email exist.
Very first line of my code is what I thought to be a variable...
> This is my absolute first time working with .scan and regular
> expressions so I have a little bit of a learning curve with this one.
> Any help is greatly appreciated.
If you expect to get relevant help, you should post a short example
progrram that demonstrates your problem, i.e. an example program that
anyone can run and get the same results you do.
The code I posted is exactly what I ran aside for giving you
hundrededs of lines of email. The example is exactly what I ran to
get the results I posted.
···
On Feb 4, 9:07 pm, 7stud -- <bbxx789_0...@yahoo.com> wrote:
The code I posted is exactly what I ran aside for giving you
hundrededs of lines of email. The example is exactly what I ran to
get the results I posted.
Though shalt use the block form of File.open to ensure proper cleanup!
Apart from that there is another way:
require 'set'
addresses = Set.new
File.foreach "data.txt" do |line|
line.chomp!
line.downcase!
puts "Duplicate: #{line}" unless addresses.add? line
end
Cheers
robert
···
2008/2/5, 7stud -- <bbxx789_05ss@yahoo.com>:
Lovell Mcilwain wrote:
>
> The code I posted is exactly what I ran aside for giving you
> hundrededs of lines of email. The example is exactly what I ran to
> get the results I posted.
>
