I know abot the "flush" method, but when cleaning, I don't want to write the data
I believe you want the into_parts method of BufWriter.
not really, I just need to reset the buffer
You're putting things into your writer you don't want to write ?
I make a text file editor, the user can change his mind to write
Ah, you don't want to use the Write trait at all then.
Use a rope data structure instead.
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thank you for helping to look at the problem from a different angle
Don't forget to learn about that data structure and adjacent data structures. Wikipedia is always a good start and follow the links.
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