This article will summarize the common application scenarios of Promise in our project development based on our own use of ES6 Promise. Of course, Promise may not be the only option, but as a qualified front-end developer, we need to understand it.
Syntax: Promise.all (iterable)
Parameter: an iterative object, such as Array.
Posted by akano on Sun, 19 Apr 2020 22:37:42 -0700
Android Global Catch Exception
Reduce Bug s
Solve Bug s as soon as possible
Bug on user's mobile phone after going online, no hair knows Bug
Require tool classes, catch exceptions, don't crash, restart from scratch, make users feel insensitive
Why use global catch exceptions
Using global catch exceptions, w ...
Posted by mfos on Sun, 19 Apr 2020 09:30:33 -0700
SpringBoot has a built-in Hibernate Validator as the checking framework, so as long as we have integrated SpringBoot, we can use Hibernate Validator to complete parameter checking.
@Null: The commented property must be null;
@NotNull: The commented property cannot be null;
@AssertTrue: The commented property must be true;
Posted by soldbychris on Sat, 18 Apr 2020 21:09:36 -0700
Imitating the background API of Weitong mall
2. Interface documents
3.3. User information
3.4. Email activation
3.5. Email verification
3.6. Access to advertising
3.7. Obtaining announcement
3.8. Access to manufacturer
Posted by ngu_tri on Fri, 17 Apr 2020 23:06:07 -0700
Alicloud SMS verification code
Today, we have a verification code for SMS, which is based on Alibaba cloud platform, https://cn.aliyun.com/ss/?k=%E7%9F%AD%E4%BF%A1api , free verification code test, no charge. There are many free testing interfaces for alicloud's api (in fact, if you pay one yuan, it means you use it, he will judge t ...
Posted by steve012345 on Fri, 17 Apr 2020 21:55:03 -0700
HTML5+tracking.js for brush payment
Recently, brushing payments have become so popular that bosses are sure to keep up with the times, so there's a brushing payment program.The key technologies for front-end implementation are camera video recording, photo taking and face matching. This article will discuss how to achieve face brushing payment ...
Posted by adt2007 on Thu, 16 Apr 2020 20:34:11 -0700
OpenMax is a unified multimedia framework. ffmpeg supports H264 OpenMax encoding. This paper records how to enable OpenMax encoding.
ffmpeg version: 4.0
OpenMax header version: 1.2
First download ffmepg, then the header file of OpenMax, and extract the zip of the header file to get
Copy the header file to the include of the corresponding pla ...
Posted by thebopps on Thu, 16 Apr 2020 09:11:16 -0700
This paper describes how to implement Android's horse-running light in flutter, then expand it to scroll up and down, first with the effect picture:
There are two main scrolling modes, vertical and horizontal, so we define two construction methods.
The parameters are scroll speed, delay of each scroll, ...
Posted by jarv on Thu, 16 Apr 2020 00:18:38 -0700
Several PDAs have been made this year, with different models. However, the scan heads of these PDAs are all the same (the manufacturer needs to provide SDK), and the latest PDA scan is recorded here
java and c ා are almost the same. They are different in some aspects. They use ":" and LINQ, Contractual programming (only using data co ...
Posted by demouser on Wed, 15 Apr 2020 12:34:46 -0700
1, Class encapsulation details
As mentioned in "java", encapsulation is the core idea of object-oriented programming. At the same time, we also know that classes are carriers, but we encapsulate the properties and behaviors of objects in the carriers.
Now we use the way of encapsulation to realize that a customer goes to a restaura ...
Posted by andycastle on Tue, 14 Apr 2020 04:44:16 -0700