clearWorkspace( [name, ][options] )
    Deletes user-defined variables in a specified workspace.

    Parameters
    ----------
    name: string (optional)
        Workspace name. Default: the current workspace.

    options: Object (optional)
    	Options.

    options.include: RegExp|ArrayLikeObject (optional)
    	Variable name inclusion filter.

    options.exclude: RegExp|ArrayLikeObject (optional)
    	Variable name exclusion filter.

    Examples
    --------
    // Create a new workspace:
    > workspace( 'foobar' );
    > var x = 3.14;

    // Switch to another workspace:
    > workspace( 'barfoo' );
    > typeof x

    // List the variables in the previous workspace:
    > varsWorkspace( 'foobar' )

    // Delete the variables in the previous workspace:
    > clearWorkspace( 'foobar' );
    > varsWorkspace( 'foobar' )

    // Navigate to the previous workspace:
    > workspace( 'foobar' );

    // Confirm that the variables were deleted:
    > x

    See Also
    --------
    assignin, clearVars, loadWorkspace, vars, varsWorkspaces, workspaces