How to visit a file and kill the current buffer?

[Mario Castelán Castro]

Hello.

Is there a way to visit a file in the current window and at the same
time kill the previous buffer that occupied the current window? I am
looking for something that behaves like the “Open” functionality in
simple GUI text editors (like leafpad).

Very often I have a frame displaying a file, but I no longer need to
have that file open. I wish to instead open another file. What I do
currently is to do C-x C-f and visit the new file, then kill the now
unneeded buffer, but it is annoying to have to do this in 2 steps.
Moreover, I tend to forget the later step and then I accumulate a lot of
“garbage” buffers that are visiting files that I am no longer interested in.

I must note that I use IDO in case it makes any difference.

Thanks.

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