Hi,
Try something like this
d = Dir.open('/user/path/Documents')
d.entries.sort
=> [ ".", "..", "doc1", "doc2", etc ]
for some reason block processing is counter intuitive here
this code does not work
e = Dir.open('/user/path/Documents')
e.entries.sort {|file| puts file }
=> warning: multiple values for a block parameter (2 for 1)
Regards,
joe
···
----- Original Message ----
From: Brad <bradaskins@gmail.com>
To: ruby-talk ML <ruby-talk@ruby-lang.org>
Sent: Friday, March 9, 2007 7:35:05 PM
Subject: Find.find --- returns directories/files backwards
New user question:
It seems to me when I run:
Find.find('/user/name/documents') {|path| puts path}
it returns all the directories in the reverse order. I was expecting
the directories to be returned in alphabetical order, but that doesn't
seem to be the case. Also, in one case it reads half of a directory's
files, then the sub dirs and then it finished reading the rest of the
directory it started in and finished writing them in the Puts
statement.
Am I missing something? How do you do get it to write out the
directories in alphabetical order?
Any and all help welcome.
Thank you.
Brad
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Joseph Schiller wrote:
for some reason block processing is counter intuitive here
this code does not work
e = Dir.open('/user/path/Documents')
e.entries.sort {|file| puts file }
=> warning: multiple values for a block parameter (2 for 1)
It doesn't work because you pass a block that accepts only one argument to
sort. Any block passed to sort is supposed to take two arguments, compare
these arguments and return -1, 0 or 1 depending on which argument is greater.
What you apparenty want to do would be archieved by writing
e.entries.sort.each {|file| puts file }
thus passing the block to each and not to sort.
···
--
Ist so, weil ist so
Bleibt so, weil war so
There is also a class method entries, so the above code can be rewritten as
Dir.entries('/user/path/Documents').sort.each {|e| puts e}
or even shorter
puts Dir.entries('/user/path/Documents').sort
Kind regards
robert
···
On 10.03.2007 17:07, Sebastian Hungerecker wrote:
Joseph Schiller wrote:
for some reason block processing is counter intuitive here
this code does not work
e = Dir.open('/user/path/Documents')
e.entries.sort {|file| puts file }
=> warning: multiple values for a block parameter (2 for 1)
It doesn't work because you pass a block that accepts only one argument to sort. Any block passed to sort is supposed to take two arguments, compare these arguments and return -1, 0 or 1 depending on which argument is greater.
What you apparenty want to do would be archieved by writing
e.entries.sort.each {|file| puts file }
thus passing the block to each and not to sort.