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My first post

I will write something about the programming what I learn or try in English.

Because I have learned TypeScript, Angular, etc, I will  write about them first.

All of the posts are just for myself. But I hope they also will be useful for someone :)


If you want, you can write  some comments in English, Japanese, or Chinese.

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[Angular][ASP.NET Core] Upload chunked files

Intro I wanted to send files to Web application (made by ASP.NET Core). If the file size had been small, I didn't need do any special things. But when I tried to send a large file, the error was occurred by ASP.NET Core's limitation. Though I could change the settings, but I didn't want to do that, because I hadn't known the file sizes what would been actually using. So I splitted the data into chunks first, and sent them. After receiving all chunks, I merged them into one file. There might be some libraries or APIs (ex. Stream API) what did them automatically, but I couldn't find them. What I did [ASP.NET Core] Make CORS enabled [Angular] Split a large file into chunks [Angular][ASP.NET Core] Send and receive data as form data [ASP.NET Core] Merge chunks into one file [ASP.NET Core] Make CORS enabled Because the client side application(Angular) and the server side application(ASP.NET Core) had been separated, I had to make CORS(Cross-Origin Requests) ...
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[Nest.js] Show static files

Intro I wanted to use Nest.js and WebRTC(node-webrtc). NestJS - A progressive Node.js framework Documentation | NestJS - A progressive Node.js framework And because I wanted to try with simple page(not use JavaScript frameworks), I added static HTML, CSS, JavaScript into a Nest.js project. Prepare Install First, I installed @nestjs/cli. First steps | NestJS - A progressive Node.js framework As same as last time , I couldn't do global install because I had used Volta. But I could installed by volta. volta install @nestjs/cli Create project nest new nest-web-rtc-sample volta pin node@12 Run npm start After doing "npm start", I could getting "Hello World!" from http://localhost:3000. Add static files I could add static files by two ways. @nestjs/serve-static First one of them was using "serve-static". Serve Static | NestJS - A progressive Node.js framework npm install --save @nestjs/serve-static And I needed adding a module into app.modu...
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[PostgreSQL] Play with TypeORM 1

Intro This time, I tried accessing Database by TypeORM. Because I wanted to manage Database tables by ORM, I created a table first.  GitHub - typeorm/typeorm   TypeORM - Amazing ORM for TypeScript and JavaScript (ES7, ES6, ES5). Installation and creating a project Installation TypeORM needed "reflect-metadata" and database driver. npm install --save typeorm reflect-metadata pg typescript tsc npm install --save-dev @types/node And I also installed "ts-node" to skip compiling. npm install --save ts-node Preparing References I could generate a TypeORM project by TypeORM command. npx typeorm init --name gen-typeorm-sample --database postgres I refered Most of all settings from it. Adding files and folders First, I added tsconfig.json. npx tsc --init And I edited like below. tsconfig.json { "compilerOptions": { /* Basic Options */ "incremental": true, "target": "es5", "module": "comm...
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