clear — kills variables
clear a
This command kills variables which are not protected.
It removes the named variables from the environment.
By itself clear
kills all the variables except the variables
protected by predef
. Thus the two commands predef(0)
and clear
remove all the variables.
Normally, protected variables are standard libraries and variables with the percent prefix.
Note the particular syntax clear a
and not clear(a)
. Note also
that a=[]
does not kill a
but sets a
to an empty matrix.