clear
kills variables
Syntax
clear a b c clear('a', 'b', 'c') clear(['a' 'b' 'c'])
Arguments
- a, b, c...
names of variables of any type and size, but not protected
Description
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 clear('a')
and not clear(a) . Note also that a=[] does not kill
a but sets a to an empty matrix. |
If a name Var matches no variable, clear Var
does nothing silently.
clear() can be overloaded for any mlist("foo") type,
by defining a %foo_clear() macro. It will be called either when
clear is explicitly applied to any mlist of this type, or implicitly
when any mlist of this type is deleted when leaving the environment where it has been
defined. |
Examples
See also
- predef — variable protection
- clearglobal — kills global variables
- funcprot — switch scilab functions protection mode
- who — listing of variables
- xmlDelete — Delete a XML document
History
Version | Description |
5.5.0 | Argument can now be a matrix of strings |
6.0.0 | clear is now protected:
Assignments like clear=1 are no longer possible. |
6.1.0 | clear becomes overloadable for any
mlist("foo") , with %foo_clear() . |
Report an issue | ||
<< checkNamedArguments | Variables | clearglobal >> |