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Builder pattern Builder mode is an object creation mode, which is used to create composite objects. When an object is composed of multiple objects, and the combination may change greatly, the construction of sub objects and the combination of sub objects can be encapsulated by using builder mode. Her ...

Interface Design Reference to wx applet index list component gitbub address: https://github.com/mehaotian/wx-list-index Above: js file: All city information is available in ajax, which I get from the allCity.js file var city = [ { title: "Popular Cities", type: 'hot', item: [ { "name": ...

(1) Generic collection List 1) Introduction Limitations of arrays: The number of array elements is fixed. Once an array is defined, the total number of elements cannot be changed. If the requirements change, the source code must be modified; If the total number of initialization elements is very ...

Article directory 1, Render props mode 1.1 overview of react component reuse 1.2 thinking analysis 1.3 operation steps 1.4 children instead of the render attribute 1.5 code optimization 2, High order components 2.1 overview 2.2 thinking analysis 2.3 use steps 2.3 settings ` displayName` 2.4 transf ...

Reprinted from Read the source code of mybatis (8) -- Interceptor 1 Intercetor MyBatis allows you to make intercept calls at some point during the execution of mapped statements. By default, MyBatis allows the use of plug-ins to intercept method calls including: Executor (update, query, flushState ...

clone protected Object clone() Creates and returns a copy of this object. protected Object clone() throws CloneNotSupportedException All classes inherit Object, so all classes have clone() methods. But not all classes want to be cloned. They must support the clonable interface. This interface does ...

Preface The content of TypeScript fragrance series will be referenced Chinese Documents However, the examples in this paper will not duplicate those in the document, and will be studied in some places.In addition, the results of some of the examples in this article are compiled into JavaScript without ...

Article Directory HTML tags: form tags CSS: Page Beautification and Layout Control 1. Concepts: Cascading Style Sheets Cascade Style Sheets 2. Benefits: 3. Use of CSS: How CSS works with html 1. Inline Styles 2. Internal Style 3. External Styles 4. css syntax: 5. Selector: Filter elements with simi ...

Reference article:https://css-tricks.com/custom...https://blog.hellojs.org/crea... Native User Control For the <video>tag, there is a property called'controls', which adds native pause/start, progress bar, volume, video maximization to the player as follows. <video id="myVideo" controls  ...

This blog is a reading note of "data analysis by Python". Please do not reprint it for other business purposes. 1,Series Series is a one-dimensional array object, which contains a sequence of values and data labels, called index es. The simplest sequence can be just an array: import pa ...