src/org/nutz/lang/stream/QueueInputStream.java
public boolean startWith(String start) throws IOException{
        char[] cs = start.toCharArray();
        int i = 0;
        for(;i < cs.length; i ++){
            if(peek(i) != cs[i]){
                return false;
            }
        }
        return true;
    }
public boolean startWith(String start) throws IOException{
        char[] cs = start.toCharArray();
        int i = 0;
        for(;i < cs.length; i ++){
            if(peek(i) != cs[i]){
                return false;
            }
        }
        return true;
    }
是否以 start 开始
@param start
@return true, 如果的确以指定字符串开始
@throws IOException