未分類

[Linux🐧]Oops!! My port has already bound!! How to kill it ?

How to search the process that buinding the port? You can see it by th command! lsof -i TCP | grep 7878 /*result here*/ ...
Rust

[Rust🦀] Features Accomodating Everyday

Rust features Features of the language connect some &str variables Best way Use to_string() let str1 = "Hello, "; let st...
Dart

[Flutter/Dart]My project doesn’t have `analysis_options.yaml` in the root directory

A question I could not find analysis_options.yaml in my project. And I didn't know how Flutter/Dart analyze errors and w...
Dart

[Flutter/Dart💠]I read a valuable article about `null safety`

I feel hazy about 'null safety' When I review the code written by my collegue by using Dart(Flutter), I came across the ...
Swift

[Swift🕊️] `guard let` must not fall through !

I believed Swift could the following code like this. Swift guard let a = a else { assert(false, "This code would be comp...
iPhone

[Swift🕊️]I am implementing the app with external microphone

As usual, I asked for ChatGPT on how to be able to use external microphone in iOS. And as usual, he/she answered with a ...
WebRTC

[WebRTC🌈]WebRTC unknowing memo

What is ScalabilityMode ? I asked to a Big teacher who is well known chatGPT and he/she said Me What is ScarabilityMode ...
Dart

[Dart💠]Dart 3 Tips (always updating)

Switch function You can write switch function like the following code. Before Dart 3.0 final String os; switch (device) ...
daily

I would like to close this blog but ….

I have planed to close this blog site but when I look my detail of my credit card. About $150 is dropped from my account...
Django

[Python/Django🐍]Django Start Up settings.py

基本コマンド サーバーの起動(8080で。デフォルトは8000) python manage.py runserver 8080 プロジェクト作成 django-admin startproject project_name <path> ...