function Demo(name) { this.name = name; } var getSingle = function(fn) { var result; return function() { console.log(arguments.length); return result || (result = fn.apply(this, arguments)); } }; const aa = new getSingle(D...
went to the interview last week, handwritten singleton class then I handwritten a more commonly used global setting class: import java.util.concurrent.locks.Lock; import java.util.concurrent.locks.ReentrantLock; public class Setting { private ...
Why do I enter .tables in command and he doesn t back out any data to me? ...
function preprocess(imageData) { const { width, height, data } = imageData; const dataTensor = ndarray(new Float32Array(data), [width, height, 4]) const dataProcessedTensor = ndarra...
what is returned in this picture is the picture information selected when the picture is uploaded code is as follows var imgFile = new ImgUploadeFiles( .box ,function(e){ this.init({ MAX : 3, MH : 58...
the local startup project reported an error, the same code configuration, but there is no problem with others. solve the reason, { "exception ": "com.mongodb.MongoSocketWriteException: Exception sending messagerntat com.mongodb.connection.Interna...
when webpack is packaged, I use extract-text-webpack-plugin, but don t know how to generate sourcemap, and blindly try some configurations that don t work. webpack.config.js { test: .less$ , use: ExtractTextPlugin.extract({ fal...