gusucode.com > 信号处理工具箱 - signal源码程序 > signal\signal\siggui\private\isvalidvar.m
function bool = isvalidvar(str) %ISVALIDVAR Valid variable name test. % bool = isvalidvar(str) % Inputs: % str - string % Outputs: % bool - 0==> not valid, 1==> valid % Copyright (c) 1988-98 by The MathWorks, Inc. % $Revision: 1.1 $ % Author: T. Krauss if length(str)>1 bool = isletter(str(1)) & ... all(isletter(str(2:end))|ismember(str(2:end),'0123456789_')); else bool = isletter(str); end