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我是新来的Node.js,为什么缓冲区复制打印我一些垃圾值?
我正在读的Node.js的缓冲器。
我偶然在buffer.copy方法。
写了代码如下所示,
var bufferOne = new Buffer("This is China");
var bufferTwo = new Buffer(20),
startTarget = 0,
sourceStart = 8,
sourceEnd = 0;
var bufferLength = bufferOne.length;
sourceEnd = bufferLength;
console.log("Buffer length "+bufferLength);
bufferOne.copy(bufferTwo,startTarget,sourceStart,sourceEnd);
console.log("Buffer1 "+bufferOne.toString());
console.log("Buffer2 "+bufferTwo.toString());
输出如下,
Buffer length 13
Buffer1 This is China
Buffer2 China
但有时也打印垃圾输出 “中国制造” 后,如下所示,
Buffer length 13
Buffer1 This is China
Buffer2 China���*�
有时,
Buffer length 13
Buffer1 This is China
Buffer2 China���
有人可以告诉我发生了什么事吗?
我敢肯定那是因为你太大的缓冲区复制,并最终打印不确定的状态,这在翻译垃圾。 – DrakaSAN