File writing

Ruby
1

Hi, I know you can write to a file using ‘w’, but this erases all the
previous data. How can I add new items to an existing document without
losing the data?

Thanks!

2

Justin To wrote:

Hi, I know you can write to a file using ‘w’, but this erases all the
previous data. How can I add new items to an existing document without
losing the data?

Thanks!

Use “a” instead of “w”. That will Append new data to the end of the
file.

3

On Wed, Jun 25, 2008 at 11:48 AM, Justin To [email protected] wrote:

Hi, I know you can write to a file using ‘w’, but this erases all the
previous data. How can I add new items to an existing document without
losing the data?

filename = File.open(“test”,“a”) do |f|
f.puts “append to file”;
f.close();
end

4

Hi again, how do I delete an item?

5

Thank you!

6

Justin To wrote:

Hi again, how do I delete an item?

…delete an item and take the now empty line away