Question concerning ruby file access from a novice:
I have seen following code fragment from
File.open(“testfile”, “r”) do |aFile|
… process the file
Advantage of this notation is that file is automatically closed when do
loop terminates – maybe by an exception with Process.exit.
But how do I test in this notation that the file with name “testfile”
really exits (and opening was successful). In an multi-tasking
environment another process may delete the file just before this
statement is executed.
Or in other words: I want to print a text like “File with filename
“testfile” does not exist” when opening failed.