[Cuis-dev] fileout. Method to create a new filename

[Nicola Mingotti]

Hi Juan, guys,

consider if you wish to add this method. I find it useful.

It is often practical to be able to create uniquely named new file, for 
example
for logs, or as container for intermediate computations. This method 
provides for it.

It has not external dependencies.

---- Example ----
'/tmp' asDirectoryEntry newFileName: 'fooTemp' ext: 'txt'. => 
'/tmp/fooTemp-1.txt'
'/tmp/fooTemp-1.txt' asFileEntry fileContents: 'foo contents'.
'/tmp' asDirectoryEntry newFileName: 'fooTemp' ext: 'txt'. => 
/tmp/fooTemp-2.txt
-----------------

bye
Nicola



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