in Ruby, how do I write array elements into txt file such that each element is on a separate line?
I am having difficulty in writing array elements into a text file in the form of 1 element per line. In this instance array is built on sentences (.) .
Please see comments in code below:
puts "enter paragraph:"
para = gets.chomp.to_s
my_array =
para.split('.').each { |p| my_array << p+ '.'; print "pushed #{p}.";puts}
new_text = File.new("new_text.txt", "w+")
p my_array
my_array.each { |m| new_text.write(m)} #clearly iterating over my_array.
#.each should be writing each element on a different line, no? Where have I gone wrong?
new_text.seek(0)
#text file is still stored in new_text variable
#the read out shows elements are not written per line
line = 1
new_text.each do |n|
puts "line #{line}: #{n}"
line += 1
end
ruby file iteration each element
asked Nov 13 '18 at 1:54
foofoo
377
add a comment |
I am having difficulty in writing array elements into a text file in the form of 1 element per line. In this instance array is built on sentences (.) .
Please see comments in code below:
puts "enter paragraph:"
para = gets.chomp.to_s
my_array =
para.split('.').each { |p| my_array << p+ '.'; print "pushed #{p}.";puts}
new_text = File.new("new_text.txt", "w+")
p my_array
my_array.each { |m| new_text.write(m)} #clearly iterating over my_array.
#.each should be writing each element on a different line, no? Where have I gone wrong?
new_text.seek(0)
#text file is still stored in new_text variable
#the read out shows elements are not written per line
line = 1
new_text.each do |n|
puts "line #{line}: #{n}"
line += 1
end
ruby file iteration each element
asked Nov 13 '18 at 1:54
foofoo
377
One way to write each element (a string) of an arrayarrto a file, one line per element, isFile.write(filename, arr.join("n")).
– Cary Swoveland
Nov 13 '18 at 3:04
add a comment |
I am having difficulty in writing array elements into a text file in the form of 1 element per line. In this instance array is built on sentences (.) .
Please see comments in code below:
puts "enter paragraph:"
para = gets.chomp.to_s
my_array =
para.split('.').each { |p| my_array << p+ '.'; print "pushed #{p}.";puts}
new_text = File.new("new_text.txt", "w+")
p my_array
my_array.each { |m| new_text.write(m)} #clearly iterating over my_array.
#.each should be writing each element on a different line, no? Where have I gone wrong?
new_text.seek(0)
#text file is still stored in new_text variable
#the read out shows elements are not written per line
line = 1
new_text.each do |n|
puts "line #{line}: #{n}"
line += 1
end
ruby file iteration each element
asked Nov 13 '18 at 1:54
foofoo
377
I am having difficulty in writing array elements into a text file in the form of 1 element per line. In this instance array is built on sentences (.) .
Please see comments in code below:
puts "enter paragraph:"
para = gets.chomp.to_s
my_array =
para.split('.').each { |p| my_array << p+ '.'; print "pushed #{p}.";puts}
new_text = File.new("new_text.txt", "w+")
p my_array
my_array.each { |m| new_text.write(m)} #clearly iterating over my_array.
#.each should be writing each element on a different line, no? Where have I gone wrong?
new_text.seek(0)
#text file is still stored in new_text variable
#the read out shows elements are not written per line
line = 1
new_text.each do |n|
puts "line #{line}: #{n}"
line += 1
end
ruby file iteration each element
ruby file iteration each element
asked Nov 13 '18 at 1:54
foofoo
377
asked Nov 13 '18 at 1:54
foofoo
377
edited Nov 13 '18 at 2:07
foo
asked Nov 13 '18 at 1:54
foofoo
377
asked Nov 13 '18 at 1:54
foofoo
377
asked Nov 13 '18 at 1:54
foofoo
377
377
One way to write each element (a string) of an arrayarrto a file, one line per element, isFile.write(filename, arr.join("n")).
– Cary Swoveland
Nov 13 '18 at 3:04
add a comment |
One way to write each element (a string) of an arrayarrto a file, one line per element, isFile.write(filename, arr.join("n")).
– Cary Swoveland
Nov 13 '18 at 3:04
One way to write each element (a string) of an array
arr to a file, one line per element, is File.write(filename, arr.join("n")).– Cary Swoveland
Nov 13 '18 at 3:04
One way to write each element (a string) of an array
arr to a file, one line per element, is File.write(filename, arr.join("n")).– Cary Swoveland
Nov 13 '18 at 3:04
add a comment |
1 Answer
1
active
oldest
votes
.each should be writing each element on a different line? no
No, whether you're iterating over something does not really matter. What matters is how you're writing into the file.
Currently you're using IO#write which doesn't say anything about adding newlines. If you change new_text.write to new_text.puts (IO#puts) you will be writing a new line after each element from your array.
You can easily see it by using $stdout directly:
> a = %w(foo bar)
=> ["foo", "bar"]
> a.each(&$stdout.method(:write)) # write -- no newlines
foobar => ["foo", "bar"]
> a.each(&$stdout.method(:puts)) # puts -- newlines
foo
bar
=> ["foo", "bar"]
answered Nov 13 '18 at 2:04
Marcin KołodziejMarcin Kołodziej
4,3111315
my mistake. I have removed faulty question.
– foo
Nov 13 '18 at 2:08
1
Also, notably,new_text.puts(my_array)will do exactly what you want, even without any explicit loop -putsprints arrays with one line per row by default.
– Amadan
Nov 13 '18 at 7:40
add a comment |
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1 Answer
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active
oldest
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1 Answer
1
active
oldest
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active
oldest
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active
oldest
votes
.each should be writing each element on a different line? no
No, whether you're iterating over something does not really matter. What matters is how you're writing into the file.
Currently you're using IO#write which doesn't say anything about adding newlines. If you change new_text.write to new_text.puts (IO#puts) you will be writing a new line after each element from your array.
You can easily see it by using $stdout directly:
> a = %w(foo bar)
=> ["foo", "bar"]
> a.each(&$stdout.method(:write)) # write -- no newlines
foobar => ["foo", "bar"]
> a.each(&$stdout.method(:puts)) # puts -- newlines
foo
bar
=> ["foo", "bar"]
answered Nov 13 '18 at 2:04
Marcin KołodziejMarcin Kołodziej
4,3111315
my mistake. I have removed faulty question.
– foo
Nov 13 '18 at 2:08
1
Also, notably,new_text.puts(my_array)will do exactly what you want, even without any explicit loop -putsprints arrays with one line per row by default.
– Amadan
Nov 13 '18 at 7:40
add a comment |
.each should be writing each element on a different line? no
No, whether you're iterating over something does not really matter. What matters is how you're writing into the file.
Currently you're using IO#write which doesn't say anything about adding newlines. If you change new_text.write to new_text.puts (IO#puts) you will be writing a new line after each element from your array.
You can easily see it by using $stdout directly:
> a = %w(foo bar)
=> ["foo", "bar"]
> a.each(&$stdout.method(:write)) # write -- no newlines
foobar => ["foo", "bar"]
> a.each(&$stdout.method(:puts)) # puts -- newlines
foo
bar
=> ["foo", "bar"]
answered Nov 13 '18 at 2:04
Marcin KołodziejMarcin Kołodziej
4,3111315
my mistake. I have removed faulty question.
– foo
Nov 13 '18 at 2:08
1
Also, notably,new_text.puts(my_array)will do exactly what you want, even without any explicit loop -putsprints arrays with one line per row by default.
– Amadan
Nov 13 '18 at 7:40
add a comment |
.each should be writing each element on a different line? no
No, whether you're iterating over something does not really matter. What matters is how you're writing into the file.
Currently you're using IO#write which doesn't say anything about adding newlines. If you change new_text.write to new_text.puts (IO#puts) you will be writing a new line after each element from your array.
You can easily see it by using $stdout directly:
> a = %w(foo bar)
=> ["foo", "bar"]
> a.each(&$stdout.method(:write)) # write -- no newlines
foobar => ["foo", "bar"]
> a.each(&$stdout.method(:puts)) # puts -- newlines
foo
bar
=> ["foo", "bar"]
answered Nov 13 '18 at 2:04
Marcin KołodziejMarcin Kołodziej
4,3111315
.each should be writing each element on a different line? no
No, whether you're iterating over something does not really matter. What matters is how you're writing into the file.
Currently you're using IO#write which doesn't say anything about adding newlines. If you change new_text.write to new_text.puts (IO#puts) you will be writing a new line after each element from your array.
You can easily see it by using $stdout directly:
> a = %w(foo bar)
=> ["foo", "bar"]
> a.each(&$stdout.method(:write)) # write -- no newlines
foobar => ["foo", "bar"]
> a.each(&$stdout.method(:puts)) # puts -- newlines
foo
bar
=> ["foo", "bar"]
answered Nov 13 '18 at 2:04
Marcin KołodziejMarcin Kołodziej
4,3111315
edited Nov 13 '18 at 2:08
answered Nov 13 '18 at 2:04
Marcin KołodziejMarcin Kołodziej
4,3111315
answered Nov 13 '18 at 2:04
Marcin KołodziejMarcin Kołodziej
4,3111315
answered Nov 13 '18 at 2:04
Marcin KołodziejMarcin Kołodziej
4,3111315
4,3111315
my mistake. I have removed faulty question.
– foo
Nov 13 '18 at 2:08
1
Also, notably,new_text.puts(my_array)will do exactly what you want, even without any explicit loop -putsprints arrays with one line per row by default.
– Amadan
Nov 13 '18 at 7:40
add a comment |
my mistake. I have removed faulty question.
– foo
Nov 13 '18 at 2:08
1
Also, notably,new_text.puts(my_array)will do exactly what you want, even without any explicit loop -putsprints arrays with one line per row by default.
– Amadan
Nov 13 '18 at 7:40
my mistake. I have removed faulty question.
– foo
Nov 13 '18 at 2:08
my mistake. I have removed faulty question.
– foo
Nov 13 '18 at 2:08
1
1
Also, notably,
new_text.puts(my_array) will do exactly what you want, even without any explicit loop - puts prints arrays with one line per row by default.– Amadan
Nov 13 '18 at 7:40
Also, notably,
new_text.puts(my_array) will do exactly what you want, even without any explicit loop - puts prints arrays with one line per row by default.– Amadan
Nov 13 '18 at 7:40
add a comment |
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One way to write each element (a string) of an array
arrto a file, one line per element, isFile.write(filename, arr.join("n")).– Cary Swoveland
Nov 13 '18 at 3:04