Is there a function that allows to erase the last-printed line in output?

Questions
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1

Hi, guys. Is there any way to erase the last created line of output?

I am trying to make a code that allows to inspect the printed lines and delete the last line or some lines printed in output cells.

But as I look up what functionality is allowed about it, the only function I could find is just deleting all output cells.

What I look for is deleting one line which is last printed in output cells.
How can I do that?

Thank you. :slight_smile:

2

If you know the CellLabel of the output cell you are interested in deleting then you can do that with code of the form (say it is the 4th output cell):

NotebookFind[EvaluationNotebook[], "Out[4]=", All, CellLabel];
NotebookDelete[EvaluationNotebook[]]

This assumes that this code is executed in the notebook in question. Based on this example you could create a small interface that does this in a variety of ways depending on your needs.

But, if all you want to do is to suppress the output of a particular cell, then of course, just append a semicolon to the last expression in the cell.

Other things you may want to look into are $Post, CellEvaluationFunction, and CellEpilog and other functions related to them.

3

Thank you for your answer, Mr.Reiss.

What you said was very curious and I am now trying to understand that. It is helpful. :slight_smile:

And additionally, however, What I exactly wanna do is deleting just one line of last printed output, not the whole output cell.

I think, considering its powerful system, wolfram language definitely can do that.
Would you look for that matter with me?

Thank you.(I am not a native English speaker so my expression could cause some misunderstanding.)

4

Could you give an example of an input that has multiple printed output lines. Typically an Input cell will only generate a single Output cell unless more than one of the commands in the Input Cell are not terminated by a semicolon.