const url = document.getElementById('queryURL').value;const sampleIndex = document.getElementById( ***1***'whichSampleInput').valueAsNumber; ***1***const myData = tf.data.csv(url); ***2***const sample = await myData.skip(sampleIndex) ***3***.take(1) ***4***.toArray();...
values[key] } // 沿着作用域链向上寻找某个变量的值,如果没有找到就返回null private getEnvironmentWithKey(key: string): Environment { if(this.values.hasOwnProperty(key)) { return this } let currentEnvironment = this.parent while(currentEnvironment) { if (currentEnvironment.values.hasOwnProperty(...
值类型:字符串string,数字number,布尔boolean,对空null,未定义undefined,symbol为es6引入的一钟新的原始数据类型,表示独一无二的值。 引用数据类型:对象object,数组array,函数function。 JavaScript提供typeof运算符用于判断一个值是否在某种类型的范围内。 Undefined类型只有一个值,即为undefined。 当声明的变量未初始化...
In this code we create a binding list (an instance of the List type from the WinJS.Binding namespace) and we loop over an array of values, using each to create a timeout, which is a promise that will fire at some time in the future according to the argument you pass (milliseconds)...
5.2 Use array destructuring. eslint: prefer-destructuring const arr = [1, 2, 3, 4]; // bad const first = arr[0]; const second = arr[1]; // good const [first, second] = arr;5.3 Use object destructuring for multiple return values, not array destructuring. Why? You can add new ...
While a completelycustom"style" could be supplied, this library comes with severalbuilt-in"styles" that some people might find useful. Following is the list of built-in "styles". Round Rounds the time up to the closest time measurement unit (second, minute, hour, etc). ...
JSON files are modeled as trees of JSON values. Each JSON value is represented by an entity of class JSONValue, which provides the following member predicates: JSONValue.getParent() returns the JSON object or array in which this value occurs. JSONValue.getChild(i) returns the ith child of ...
BehaviorValueValidatorUse this callback function if your behavior's data structure is an array of strings. BehaviorMapValidatorUse this callback function if your behavior's data structure is a dictionary. BehaviorEnumValidatorUse this callback function if your behavior's data structure is an Enum....
function DisplayStack() { // Create an array of stack frames in the current thread const Frames = Array.from(host.currentThread.Stack.Frames); host.diagnostics.debugLog(">>> Printing stack \n"); // Print out all of the frame entries in the array for(const [Idx, Frame] of Frames.entr...
The keys before, after, beforeEach, and afterEach are special-cased, object values are suites, and function values are test-cases: module.exports = { before: function() { // ... }, Array: { '#indexOf()': { 'should return -1 when not present': function() { [1, 2, 3].index...