ruby How I could print without leave newline space for each line
this is my file
name1;name2;name3
name4;name5;name6
I have this command
File.open("text2xycff.txt", "r") do |fix|
fix.readlines.each do |line|
parts = line.chomp.split(';')
input3= zero
File.open('text2xyczzzz2.txt', 'a+') do |f|
f.puts parts[0] , parts[1], parts[2] ,input3
end
end
end
this is my output
name1
name2
name3
zero
name4
name5
name6
zero
I need to output this
name1;name2;name3;zero
name4;name5;name6;zero
Please help me whit this problem
A more minimal approach is to just append something to each line:
File.open("text2xycff.txt", "r") do |input|
File.open('text2xyczzzz2.txt', 'a+') do |output|
input.readlines.each do |line|
output.puts(line.chomp + ';zero')
end
end
end
Or if you want to actually parse things, which presents an opportunity for clean-up:
File.open("text2xycff.txt", "r") do |input|
File.open('text2xyczzzz2.txt', 'a+') do |output|
input.readlines.each do |line|
parts = line.chomp.split(/;/)
parts << 'zero'
output.puts(parts.join(';'))
end
end
end
If you call puts
with comma-separated arguments, each one of them will be printed on a different line.
You can use ruby string interpolation here ( http://ruby-for-beginners.rubymonstas.org/bonus/string_interpolation.html ):
f.puts "#{parts[0]};#{parts[1]};#{parts[3]};#{input3}"
You have two solutions.
The first one uses puts
as you currently do:
File.open('yourfile.txt', 'a+') { |f|
f.puts "#{parts[0]}#{parts[1]}#{parts[2]}#{input3}"
}
The second one uses write
instead of puts
:
File.open('yourfile.txt', 'a+') { |f|
f.write parts[0]
f.write parts[1]
f.write parts[2]
f.write input3
}
Try:
File.open("test_io.txt", "r") do |fix|
fix.readlines.each do |line|
File.open('new_file10.txt', 'a+') do |f|
next if line == "\n"
f.puts "#{line.chomp};zero"
end
end
end
I'm not sure why you're splitting the string by semicolon when you specified you wanted the below output. You would be better served just appending ";zero" to the end of the string rather than parsing an array.
name1;name2;name3;zero
name4;name5;name6;zero
You can specify an if
statement to check for the zero
value.
Example:
arr = ["name1", "name2", "name3", "zero", "name4", "name5", "name6", "zero"];
arr.each { |x|
if x != "zero" then
print x
else
puts x
end
}
Output:
name1name2name3zero
name4name5name6zero
print
will print inline.
puts
will print on a new line.
Just implement this logic in your code and you're good to go.
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