[英]what does (**variable) mean in node.js?
在https://www.airpair.com/javascript/node-js-tutorial上,我看到了以前从未见过的东西:
var gzip = zlib.createGzip();
var readStream = fs.createReadStream(**filename); // current file
var writeStream = fs.createWriteStream(**dirname + '/out.gz');
**在...(**filename);
是什么意思...(**filename);
和...(**dirname ...);
? 谢谢
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