代码 from django.db.modelsimportQkeywords=['促销','打折','限时']item=Product.objectsifkeywords:filters=Q(description__contains=keywords[0])forkeywordinkeywords[1:]:filters|=Q(description__contains=keyword)item=item.f
对数组成员包含的关键字进行统计 function Keyword(arr = [], keys = []) { return keys.reduce((t, v) => (arr.some(w...在Caniuse上搜索一番,兼容性绝对的好,可大胆在任何项目上使用。不要吝啬你的想象力,尽情发挥reduce的compose技能啦。对于时常做一些累计的功能,reduce绝对是首选方法。 ? ?......
In JavaScript, the Array.reduce() method is used to manipulate array. This method executes a reducer function on each element of the array (from left to right) and returns a 'single value' as a result.It accepts an optional parameter named 'initialValue'. If we do not pass this ...
位置可变参数可以在普通参数之前, 但是在位置可变参数之后的普通参数变成了keyword-only参数: 职场亮哥 2020/10/10 2.7K0 python3.6.4的学习 mapreduce [root@mantisbt01 python]# ./13.py Please input your name:hadoop Please input your height(m):1.80 Please input your height(kg):75.3 hadoop , Your...
*@paramcallbackfnA function that accepts up to three arguments. The map method calls the callbackfn function one time for each element in the array. *@paramthisArgAn object to which the this keyword can refer in the callbackfn function. If thisArg is omitted, undefined is used as the thi...
The JavaScript super keyword Jun 25, 2020 Event delegation in the browser using vanilla JavaScript Jun 24, 2020 JavaScript Proxy Objects Jun 23, 2020 How to accept unlimited parameters in a JavaScript function Jun 22, 2020 How to check if a value is a number in JavaScript Jun 21, 202...
The JavaScript super keyword Jun 25, 2020 Event delegation in the browser using vanilla JavaScript Jun 24, 2020 JavaScript Proxy Objects Jun 23, 2020 How to accept unlimited parameters in a JavaScript function Jun 22, 2020 How to check if a value is a number in JavaScript Jun 21, 202...
PHP - Final Keyword PHP - Overloading PHP - Cloning Objects PHP - Anonymous Classes PHP Web Development PHP - Web Concepts PHP - Form Handling PHP - Form Validation PHP - Form Email/URL PHP - Complete Form PHP - File Inclusion PHP - GET & POST PHP - File Uploading PHP - Cookies PHP...
710 563 "keywordPart", 711 - "last", 712 - "lastOrUndefined", 713 - "length", 714 564 "libMap", 715 565 "libs", 716 566 "lineBreakPart", @@ -723,22 +573,10 @@ export default new Set([ 723 573 "makeImport", 724 574 "makeStringLiteral", 725 575 "mangleScopedPackageName"...
The doctype keyword can be used to generate the complex doctypes in a very simple manner. XML VERSION doctypexml <?xmlversion="1.0"encoding="utf-8"?>doctypexml ISO-8859-1 <?xmlversion="1.0"encoding="iso-8859-1"?> XHTML DOCTYPES ...