Hi Ron,
> Excellent. Remember that you should also look at the super classes for
> methods. UnixFileDirectory is the instance of “FileDirectory default” but
> it’s also a subclass of FileDirectory so the methods you can call include
> UnixFileDirectory and all the methods on the class hierarchy including the
> methods on FileDirectory. Please see the method categories on FileDirectory
> that I mentioned.
Okay, thanks. I tried to do something with that, but I got an error. I think
I was trying to use a class method on the instance.
> The question I asked was a bit different. When you ask for the #entries of
> the instance “FileDirectory default” what class is each file?
It is an Array of DirectoryEntry objects.
> By the way, based on the question you asked there is a method on
> FileDirectory to determine if the file exists before you read it (it’s in the
> method categories I pointed out to you). What is that method?
fileExists:
I see what is happening. I thought the on: method changes the path, like cding
a directory. But it gives a new instance.
dir := FileDirectory default.
dir on: '/Users/jja/Desktop’ ==> UnixFileDirectory on '/Users/jja/Desktop'
dir fileExists: 'categories.CSV’ ==>false
dir pathName
==>'/Users/jja/Desktop/Squeak-4.3-All-in-One.app/Contents/Resources'
dir := FileDirectory on: '/Users/jja/Desktop’ ==> UnixFileDirectory on
'/Users/jja/Desktop'
dir pathName ==> '/Users/jja/Desktop'
dir fileExists: 'categories.CSV’ ==> true
So on: is the equivalent of new, in that it gives a new instance.
Thank you,
Sincerely,
Joe.
--
View this message in context:
http://forum.world.st/FileDirectory-tp4897377p4897418.html
Sent from the Squeak - Beginners mailing list archive at Nabble.com._______________________________________________
Beginners mailing list
Beginners@lists.squeakfoundation.org
http://lists.squeakfoundation.org/mailman/listinfo/beginners
