node.js 场景调用 fs.close 是必要的
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/21176733/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
What the scenario call fs.close is necessary
提问by L.T
I can't find more about fs.close explain in nodejs API. I want to know what the scenario call fs.close is necessary. for example:
我在 nodejs API 中找不到关于 fs.close 的更多解释。我想知道什么场景调用 fs.close 是必要的。例如：
var fs = require('fs');
fs.writeFile("/home/a.tex","abc"); or like fs.appendFile("/home/a.tex","close")
fs.close(); //is it necessary?
Are there any effects if i don't call fs.close?
如果我不调用 fs.close 有什么影响吗？
Any help is appreciated.
任何帮助表示赞赏。
回答by Dan D.
You don't need to use fs.closeafter fs.readFile, fs.writeFile, or fs.appendFileas they don't return a fd(file descriptor). Those open the file, operate on it, and then close it for you.
您不需要使用fs.closeafter fs.readFile、fs.writeFile或fs.appendFile因为它们不返回fd（文件描述符）。那些打开文件，对其进行操作，然后为您关闭它。
The streams returned by fs.createReadStreamand fs.createWriteStreamclose after the stream ends but may be closed early. If you have paused a stream, you must call close on the stream to close the fdor resume the stream and let it end after emitting all its data.
流返回fs.createReadStream并fs.createWriteStream在流结束后关闭，但可能会提前关闭。如果您已暂停流，则必须对流调用 close 以关闭fd或恢复流，并在发出所有数据后让它结束。
But if you call fs.openor any of the others that give a fd, you must eventually fs.closethe fdthat you are given.
但是如果你打电话fs.open或任何其他人给出了fd，你最终必须得到你fs.close的fd那个。
