Using arrow keys for using the previous command

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ashwin TP
ashwin TP 2020-9-7
回答： Walter Roberson 2020-9-7
I read in a tutorial that
"A short-cut for retyping commands is to press the up-arrow, which will go back to the previously typed command(s). For example, if you decided to assign the result of the expression 6 3 to the variable myvar instead of using the default ans, you could press the up-arrow and then the left-arrow to modify the command rather than retyping the whole statement:"
Is this option available when we type the comands in command window or does this work in the Mfile also. I was unable to make it work in M file
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KSSV
KSSV 2020-9-7
You cannot do that in m-file. It is for command window. Also have a look on history.

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回答（1 个）

Walter Roberson
Walter Roberson 2020-9-7
Only in the command window.
In a .m file, you can use copy/paste

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