Form verification is an indispensable link when we submit a form. The common verification method is to judge each parameter separately, but this is not only troublesome, but also if we write too many if parameters, the code will be bloated and the readability will be poor. Take login as an example, supp ...
Posted on Sat, 22 Feb 2020 09:33:57 -0500 by plazz2000
Due to the limited screen space of mobile phones, there is not much content that can be displayed on the screen at one time. When there is a large amount of data to be displayed in the program, it can be realized with the help of ListView. ListView allows users to scroll off screen data i ...
Posted on Fri, 21 Feb 2020 02:20:08 -0500 by Acs
3.1 object oriented features
**Encapsulation: * * hides interfaces in the class that do not need to be opened to the public.
**Inheritance: * subclass can inherit the public member variables and member functions of the parent class.
**Polymorphism: * * the ability of the same behavior ...
Posted on Thu, 20 Feb 2020 01:21:25 -0500 by juminoz
Android system provides a lightweight data storage method - shared preferences storage. It shields the operation of the underlying file, and provides a simple programming interface for the program developers to realize the most simple way to permanently save the data. This method mainly saves a small am ...
Posted on Wed, 19 Feb 2020 23:07:07 -0500 by twilson
Flybook provides a rich api for message notification, including text messages, picture messages, rich text messages. This introduction uses Flybook api to send text messages, the following is the implementation ideasFlying Book API address: https://open.feishu.cn/document/ukTMukTMukTM/uITNz4iM1MjLyUzM
Ideas for implementation
1. Three authoriz ...
Posted on Wed, 19 Feb 2020 12:25:15 -0500 by moe
I've been looking for inspiration for game design recently.
Looking for it, I suddenly remembered that in a previous airplane game, end game, he could automatically fire bullets according to the music files you played. The players could not fire bullets on their own. At that time, I always took a piece ...
Posted on Wed, 19 Feb 2020 06:22:22 -0500 by squariegoes
1. Demand analysis:
An examination system in which users are notified in various ways when a candidate's results pass (with a score greater than 60).
Notification methods include: APP message push, SMS, mail, and in-site message.
Whether or not notifications are made in each way is configurable in the table;
Suppose we query the fo ...
Posted on Tue, 18 Feb 2020 11:57:49 -0500 by sqishy
A - DRM Messages
B - Game of Throwns
C - Sheba's Amoebas
A - DRM Messages
meaning of the title
Given A string, the length of the string must be even. First, divide the string into two parts with equal length, and then do the same processing for the two strings. The processing rule is to ...
Posted on Tue, 18 Feb 2020 08:32:12 -0500 by bliss322
Because of credulity Lesson of firmware brush for 3 Pandora of Xiaomi router Thirty years ago, I brushed my millet router 3pro, and then I had an i5256 minicomputer, which can dial and use. but there are so many devices in my home, especially mobile notebook, which need wireless. Just as the host has wireless, I studied how to use the wireless ...
Posted on Tue, 18 Feb 2020 04:44:58 -0500 by ntohky14
Single Responsibility Principle (SRP): Components (functions, classes, modules) must focus on a single task
Open/Close Principle (OCP): Consider scalability when designing, but modify the original code at least when extending
Richter Replacement Principle (LSP): Any class in a pr ...
Posted on Sun, 16 Feb 2020 21:37:32 -0500 by Lumio