Tag：Permit
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Time：2021-6-8
With the more in-depth understanding of blockchain in various industries, blockchain technology has also been applied in various industries, and the application and development of blockchain has gradually become the key application technology of industry reform and upgrading. Blockchain development technology has become the mainstream technology, not only staying in bitcoin or coin circle tools, […]
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Time：2021-4-21
preface Recently, I learned about the cross platform solution based on the app that wants to realize a collection of personal common functions. And then began to flutter learning, through the article to record the learning harvest. The main content of this article is to introduce the mode of state management in flutter and the […]
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Time：2021-4-20
@[toc] Long time no see. Set off again. 1、 Preface At first, the initial flutter, simple configuration of a wave, after a while, and then lazy to give up. 2020 is an extraordinary year. Most of them are working in Canada, finishing their daily work and becoming more lazy. When you think about it, it’s […]
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Time：2021-1-7
Java Concurrent Programming: how to block and wake up multithreadingWhen it comes to the combination of suspend and resume, there is a tendency of deadlock. Carelessness will lead to many problems and even the whole system crash. Let’s look at another solution. We can use object-oriented blocking, that is, using the wait() and notify() methods […]
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Time：2020-12-3
Problems encountered When using the repository interface, a null pointer exception will be reported if the query result of findby method is nulljava.lang.NullPointerExceptionWhen the query result is not empty, it can pass the test. This article first appeared in my personal blog technology mansion（ wcc.im ）Problems encountered when spring data JPA query result is null […]
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Time：2020-11-30
As early as the GitHub universal conference in 2019, GitHub officially announced that they were about to launch mobile app. Recently, GitHub app has finally come out. As the most popular same-sex dating website in the world, after its release, it is natural to be a big fan, but in addition, many developers have proposed […]
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Time：2020-10-28
Technical editor: Xu Jiuyi from si no office On May 22, 2020, the opencv Technical Committee proposed in a meeting that the authorization agreement should be changed from BSD to Apache license 2. Compared with BSD, Apache license 2 is a more standard and detailed open source protocol. What is the change of agreement? For […]
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Time：2020-10-27
preface Recently, I learned about the cross platform solution based on the app that wants to implement a common set of personal functions. And then began the study of flutter, through the article to record the harvest of learning. The main content of this article is to introduce the mode of state management and the […]
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Time：2020-9-27
Origin and development of open source In 2019, Qiu yuepeng, vice president of Tencent and President of Tencent cloud, said that open source is the general trend of technology development. Tencent cloud is the initiator of many open source projects and an important contributor and contributor to the open source community. After that, Jia Yangqing, […]
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Time：2020-9-14
This paper tells you how to install dotnet SDK on UOS domestic system The UOS used is UOS 20 x64. This system version is based on Debian 10 and can be installed by Debian 10 Enter the UOS system, click the icon in the lower left corner, which is equivalent to the windows start button, […]
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Time：2020-9-12
This article tells you how to install MonoDevelop development tools on UOS. The UOS used in this paper is UOS 20 x64, which is based on Debian 10. The default MonoDevelop development tool does not provide UOS version, but provides Debian 10 version Manual installation of MonoDevelop is not reliable, this article recommends that you […]
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Time：2020-9-11
Let’s start with a hello world application and try the drag control development like the old WinForms After creating a GTK ා 2.0 application, we can try to start the development of drag control. Of course, the application interface developed by this development method is a bit old. But it’s good for fun First drag […]
