1、arrayAverage 返回数字数组的平均值。 使用Array.reduce()将每个值添加到累加器中, 并以0的值初始化, 除以数组的length。 const arrayAverage = arr => arr.reduce((acc, val) => acc + val, 0) / arr.length; // arrayAverage([1,2,3]) -> 2 2、arraySum 返回一个数字数组的总和。 使用Arra...
├── range-parser@1.0.2 ├── merge-descriptors@1.0.0 ├── array-flatten@1.1.1 ├── cookie@0.1.3 ├── utils-merge@1.0.0 ├── parseurl@1.3.0 ├── cookie-signature@1.0.6 ├── methods@1.1.1 ├── fresh@0.3.0 ├── vary@1.0.1 ├── path-to-regexp@0.1.7 ├...
("{0}, in binary: {0:b}, in hexadecimal: {0:x}",11);// debug trait (very useful to print anything)// if you try to print the array directly, you will get an error// because an array is not a string or number typeprintln!("{:?}",[11,22,33]);} 运行代码查看输出: 代码...
Numpy’s random number routines produce pseudo random numbers using combinations of aBitGeneratorto create sequences and aGeneratorto use those sequences to samplefrom different statistical distributions: BitGenerators: Objects that generate random numbers. These are typically unsigned integer words filled ...
The workbook object contains a SheetNames array of names and a Sheets object mapping sheet names to sheet objects. The XLSX.utils.book_new utility function creates a new workbook object: /* create a new blank workbook */ var wb = XLSX.utils.book_new(); The new workbook is blank and ...
{ target.__proto__ = src } export const arrayMethods = Object.create(arrayProto) const methodsToPatch=[ 'push', 'pop', 'shift', 'unshift', 'splice', 'sort', 'reverse' ] methodsToPatch.forEach(function (method){ const original = arrayProto[method] def(arrayMethods, method, function...
let numbers = Immutable.Range(0, 100); let seq= Immutable.Seq.of(...numbers).take(9);//Seq do nothing now//Use toArray() to actually make it worksconsole.log(seq.toArray());//[0, 1, 2, 3, 4, 5, 6, 7, 8] Cache for Seq-- You are able to use .cacheResult() method ...
*/ ranges: readonly SelectionRange[]; /** Get the currently selected code. */ selectionCode: string; /** * The length of the given array should be the same as the number of active selections. * Replaces the content of the selections with the strings in the array. */ selections: ...
// def :: String -> StrMap (Array TypeClass) -> Array Type -> Function -> Function const def = $.create ({checkTypes: true, env});The checkTypes option determines whether type checking is enabled. This allows one to only pay the performance cost of run-time type checking during ...
JS_CLASS_C_FUNCTION_DATA 这种类型的对象是 QuickJS 的扩展函数,对应结构体是 JSCFunctionDataRecord。JS_CLASS_FOR_IN_ITERATOR 类型对象是 for...in 创建的迭代器函数,对应的结构体是 JSForInIterator。 JS_CLASS_ARRAY_BUFFER 表示当前对象是 ArrayBuffer 对象,ArrayBuffer 是用来访问二进制数据,比如加快数组操作...