I have a few Ada questions that I’ll just summarize in one post.

If I always have to completely rewrite a file, then it makes no difference whether I use Open or Create. Is that correct or did I miss something?

Currently I use Stream_IO to write files, the files contain different data types. Do other writing methods, such as Sequential_IO, produce smaller files that justify the extra effort to use them? Or are they practically all equally efficient?

I use Pure, Preelaborate and Elaborate_Body whenever possible. However, I have some files that don’t allow Pure/Preelaborate and since they don’t have a body, Elaborate_Body isn’t possible either. However, I would still like to know if there is a circular dependency. Are there any other options besides giving all files a body?

Is there a standard function that returns the number of elements in an enum subtype, or do I have to write it myself?

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