/doc/efun/catch

SYNOPSIS

mixed catch(string expr)

DESCRIPTION

Evaluate expr. If there is no error, 0 is returned. If there is an error, a string (with a leading '*') will be returned. The functions throw(value) and raise_error(value) can also be used to immediately return any value, except 0. The catch() is somewhat costly, and should not be used anywhere. Rather, use it at places where an error would destroy consistency.

Catch is not really an efun, but a compiler directive.

EXAMPLE

	object obj;
	string err;
	if (err = catch(obj = clone_object("/foo/bar/baz")))
	   write("Cannot clone object, reason:"+err"+\n");

SEE ALSO

throw

raise_error

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