Posts by Year

2020

CentOS 7 curl version upgrade

1 minute read

I thought that if I followed the procedure introduced in some article, it would be completed smoothly, but I struggled unexpectedly, so I summarized my own ...

Install PostgreSQL 12 on Centos8

1 minute read

Introduction Since I had only touched Mysql, I installed Postgresql using the installation method on the official website for verification. This time, we a...

Docker operation memo

1 minute read

usage environment VirtulBox : 6.1 Host OS: Ubuntu 18.04 Docer : docker-ce 19.03.13 The host OS of docker is a virtual environment running on VirtualBox.

Docker installation on CentOS 6

less than 1 minute read

Quite a lot of old information was disseminated. .. .. yum install dockerThere will be confusing things that have nothing to do with it (An error occurred ...

Use CentOS with LXD

less than 1 minute read

How to install and configure CentOS 8 on lxd 4.6 installed on Ubuntu 20.04. When the installation is complete and you log in, you should see something like...

CentOS IP address Setup

6 minute read

It is a story that solved the problem that ens224 and ens256 do not UP and the IP address cannot be set.

A memorandum to unfocus the TextBox

less than 1 minute read

I was a little addicted to it when implementing processing such as releasing the focus when the enter key was pressed, so I will write it down. It would be...

C # basic

9 minute read

table of contents –What is C #? Feature HelloWorld –Standard input –Standard output –Variables –Random –Conditional branch –DateTime structure –...

Network install CentOS 8 with Kickstart.

9 minute read

Introduction Previously, I posted an article about network installation using Ubuntu’s automatic installation function, but since it’s a big deal, I’ll leav...

MVVM Show View Pattern 1 View Code Behind

3 minute read

Think about the pattern to display View When I started studying MVVM, I didn’t know how to write the code at all. Where should I write the code to display t...

C # Conditional attribute trap

less than 1 minute read

Problem overview I defined define and used Conditional, but why isn’t the function called? ?? ?? I encountered an incident such as.

(C #) LINQ to get next weekday

less than 1 minute read

Introduction I wondered if I could write a clean code to get the next weekday in C # and tried it in LINQ. I would appreciate it if you could comment if yo...

How to install beta php8.0 on CentOS8

1 minute read

Background It seems that php8.0 will be released on November 26, 2020. A beta version is also available in the repository of remi, so install it and check ...

Try RabbitMQ + PHP on CentOS

1 minute read

A note when I tried RabbitMQ to introduce asynchronous processing in PHP. This article uses CentOS7 and PHP7.3.

SQLiteUnityKit extension library

2 minute read

A library based on SQLiteUnityKit ――It is one of the many modifications of SQLite Unity Kit. –Repository (GitHub)

How to compile C # without VS

less than 1 minute read

Verification environment ・ Windows10 64bit 1909 build 18363.1082 -DotnetFramework x64 v4.0.30319

[C #] Inconsistent accessibility

less than 1 minute read

When I created a class to manage resources in C # “CS0053 Accessibility is inconsistent. The accessibility of the property type’Resources’ is set lower th...

Implement type constraints like in C #

7 minute read

In the development of C # port of AtCoderLibrary Class <arbitrary numeric type I have the intention of realizing a type like> , and I will describe th...

Use Mobile-FFmpeg with Unity

4 minute read

Introduction It became necessary to process video files and audio files within the application being developed in Unity, so we decided to use Mobile-FFmpeg....

[C # / WPF / MVVM] I researched MVVM now

11 minute read

Introduction I’m ashamed to say that I’m an outdated programmer who hasn’t used WPF, let alone ** MVVM **, for WinForms projects. Embarrassing … [^ 7]: I d...

Grab the knack of ffmpeg

1 minute read

What is ffmpeg Have you ever thought “I want to cut out an image from a video”, “I want to extract only audio from a video”, “I want to make a video from mu...

Implemented cart pole with ML-Agents 1

3 minute read

Overview Implement and train cart poles in ML-Agents. I hope it helps people who want to create models to train themselves using ML-Aegents. Introduction Cr...

Install OpenFOAM v2006 on CentOS

11 minute read

This article is a memorandum of the procedure when installing version v2006 of OpenFOAM, which is open source software for fluid analysis, on CentOS 6.x.

CentOS8 basic setup

6 minute read

This is a basic setting memo for myself regarding the installation of CentOS8 series. Contains a lot of hobby ingredients. During the actual installation...

How to run the ML-Agents sample

3 minute read

Overview This is an article that summarizes how to learn and operate the sample model of ML-Agent. Think of it as a rough flow of notes. Use Anaconda, pip, ...

KVM disk expansion

4 minute read

Extend the KVM disk image. This time, we will expand the disk on a machine using LVM. Expand to 20GB from + 10GB to 10GB.

How to change kube-proxy to ipvs mode.

less than 1 minute read

While building kubernetes v1.19 on CentOS8, I struggled with how to change the mode of kube-proxy from the default iptables to ipvs.

[Unity] Rigidbody simple manual

3 minute read

Introduction This article is a brief description of the ** beginner ** Rigidbody, picking up the ones you use most often. The meaning of personal memos is ...

Precautions when outputting CSV in C #

1 minute read

CSV is convenient, isn’t it? When you want to export data to spreadsheet software such as Excel, creating .xlsx is not impossible, but it is quite troubleso...

About instantiate

less than 1 minute read

Introduction Here, the technical part is written so that beginners can understand it somehow.

Combine multiple mp3 files with ffmpeg

less than 1 minute read

Combine all mp3 files under the directory into one mp3 file. I found this to be the easiest of all the research and trials. You can do it with two command...

I tried Unity ML-Agents

4 minute read

Premise environment Unity 2019.4.9f1 (LTS) ML Agents 1.3.0 (Preview) ML Agents Extension 0.0.1 (Preview) Anaconda Python 3.8 Windows 10

firewalld went wrong, so I managed to fix it.

less than 1 minute read

Can I connect only with the rules described in drop? !! While I was messing around, I started to refuse the connection unless it was the service, IP, or por...

[C #] Start Windows standard touch keyboard

3 minute read

Windows has a touch keyboard executable file called tabtip.exe (“C: /Program Files / Common Files / Microsoft Shared / ink / tabtip.exe”), and you can use t...

OpenAM installation on VirtualBox

13 minute read

In my work, I will write OSS x Security Article in a technical information magazine, and as the first experimental memo, this article Until OpenAM sneaks on...

C # grammar memo

4 minute read

Array Array declaration Type name [] = variable name;

[WinForms] 3D chart

1 minute read

```cs using System; using System.Drawing; using System.Windows.Forms; using System.Windows.Forms.DataVisualization.Charting;

[Note] Model binding

less than 1 minute read

![-](https://img.shields.io/badge/ASP.NETCore-3.1-brightgreen) Introduction This is a memo when I researched Model Binding of ASP.NET Core. ..

Linq’s count () was too slow.

1 minute read

LINQ count is slow I was doing paiza because I had too much free time, but there was a test case that timed out. After fixing the part written in Linq, the...

[.NET] Should VB.NET be type inferred?

2 minute read

What is type inference? I don’t bother to write it now, but if I write it, it’s ** “Let the compiler infer the type from the right side of the assignment ex...

Try the MVVM pattern with Blazor

3 minute read

Introduction I was developing an application with Blazor, and I thought that it would be easier to develop if I could apply the MVVM pattern that was done d...

Learn Prism Commanding

12 minute read

Learn the Commanding section from the RRISM LIBRARY Documentation (https://prismlibrary.com/docs/commanding.html).

Set List to Span

less than 1 minute read

.NET 5.0 will add a method to make List <T> Span <T>.

C # error message

less than 1 minute read

An error that occurred when the argument of Split was enclosed in ". When using it, specify it with single quotation marks such as data.Split (',').

Learn Prism WPF View Composition

49 minute read

Learn the WPF View Composition (https://prismlibrary.com/docs/wpf/view-composition.html) section from the PRISM LIBRARY Documentation.

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