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I would like to save a file downloaded from the internet in iPhone.
Can I use the url as the file name? If not, what transformation should I apply to the url to obtain a valid file name?
I need to find the local copy of the file later using its url.
Edit: Not asking where or how to write a file to disk. The question is limited to getting a valid file name from an url.
For lack of a better method, I’m using a persistent dictionary to map the urls to unique names.