New to Programming: Value of gets for just "Enter"

ruby-talk
1

Hello,
I am new to programming in general, and I was having a difficult time
figuring out the solution to this problem as well as thinking of good
key words that would help me find the solution online.

My problem is simply that I do not know what the value of a 'gets' that
doesn't contain anything is. I want this program to end if someone just
hits enter for the gets response, and I don't know how to represent that
in the program itself.

puts 'Enter as many words as you please, one per line. Press enter to
quit.'
array = []
input = gets.chomp.downcase
if input != # Not sure what should go here
  while input != # Not sure what should go here
    array.push input.capitalize
    input = gets.chomp.downcase
  end
else
end
puts array.sort

If anyone could help me out with this I would be very grateful. I am
sure there is a very simple solution, but I have been looking around
quite a bit, and have been unable to find anything.

Thanks in advance.

···

--
Posted via http://www.ruby-forum.com/.

2

It will return an empty string

if input != ""

···

On Sat, Jun 6, 2009 at 7:50 PM, Matt Garriott<matt.garriott@gmail.com> wrote:

Hello,
I am new to programming in general, and I was having a difficult time
figuring out the solution to this problem as well as thinking of good
key words that would help me find the solution online.

My problem is simply that I do not know what the value of a 'gets' that
doesn't contain anything is. I want this program to end if someone just
hits enter for the gets response, and I don't know how to represent that
in the program itself.

puts 'Enter as many words as you please, one per line. Press enter to
quit.'
array =
input = gets.chomp.downcase
if input != # Not sure what should go here
while input != # Not sure what should go here
array.push input.capitalize
input = gets.chomp.downcase
end
else
end
puts array.sort

If anyone could help me out with this I would be very grateful. I am
sure there is a very simple solution, but I have been looking around
quite a bit, and have been unable to find anything.

--
Rick DeNatale

Blog: http://talklikeaduck.denhaven2.com/
Twitter: http://twitter.com/RickDeNatale
WWR: http://www.workingwithrails.com/person/9021-rick-denatale
LinkedIn: http://www.linkedin.com/in/rickdenatale

3

Matt Garriott wrote:

Hello,
I am new to programming in general, and I was having a difficult time
figuring out the solution to this problem as well as thinking of good
key words that would help me find the solution online.

My problem is simply that I do not know what the value of a 'gets' that
doesn't contain anything is. I want this program to end if someone just
hits enter for the gets response, and I don't know how to represent that
in the program itself.

print "Enter: "
input = gets
p input

--output:--
Enter:
"\n"

···

--
Posted via http://www.ruby-forum.com/\.

4

7stud -- wrote:

print "Enter: "
input = gets
p input

--output:--
Enter:
"\n"

Whenever you hit Enter/Return on your keyboard, you are adding a
"newline" to the input. A newline is signified by the string "\n".

···

--
Posted via http://www.ruby-forum.com/\.

5

And then the chomp function which he calls on the string removes the \n
from the end, making it an empty string.

···

On Mon, 08 Jun 2009 14:59:31 +0900, 7stud -- wrote:

7stud -- wrote:

print "Enter: "
input = gets
p input

--output:--
Enter:
"\n"

Whenever you hit Enter/Return on your keyboard, you are adding a
"newline" to the input. A newline is signified by the string "\n".

--
Chanoch (Ken) Bloom. PhD candidate. Linguistic Cognition Laboratory.
Department of Computer Science. Illinois Institute of Technology.
http://www.iit.edu/~kbloom1/

6

Ken Bloom wrote:

···

On Mon, 08 Jun 2009 14:59:31 +0900, 7stud -- wrote:

Whenever you hit Enter/Return on your keyboard, you are adding a
"newline" to the input. A newline is signified by the string "\n".

And then the chomp function which he calls on the string removes the \n
from the end, making it an empty string.

Really?
--
Posted via http://www.ruby-forum.com/\.

7

7stud -- wrote:

Ken Bloom wrote:

Whenever you hit Enter/Return on your keyboard, you are adding a
"newline" to the input. A newline is signified by the string "\n".

And then the chomp function which he calls on the string removes the \n
from the end, making it an empty string.

Really?

if input.chomp.strip != ""

···

On Mon, 08 Jun 2009 14:59:31 +0900, 7stud -- wrote:

8

irb(main):001:0> "\n".strip
=> ""
irb(main):002:0> " \n ".strip
=> ""

···

On Tue, Jun 9, 2009 at 10:30 AM, Rha7<rha7.com@gmail.com> wrote:

if input.chomp.strip != ""

9

botp wrote:

···

On Tue, Jun 9, 2009 at 10:30 AM, Rha7<rha7.com@gmail.com> wrote:

if input.chomp.strip != ""

irb(main):001:0> "\n".strip
=> ""
irb(main):002:0> " \n ".strip
=> ""

rha7.illuminated.chomp