$ brew tap osx-cross/avr$ brew install avr-gcc$ brew install dfu-programmer
let n1: f32 = 1.0f32;
let n2: isize = 0xF1A; // 16進数
let n3: isize = 0b11001; // ２進数
| use std::fmt; | |
| struct Point { | |
| x: i32, | |
| y: i32, | |
| } | |
| impl fmt::Display for Point { | |
| fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | |
| write!(f, "({}, {})", self.x, self.y) |
| use std::str; | |
| fn main() { | |
| // -- FROM: vec of chars -- | |
| let src1: Vec<char> = vec!['j','{','"','i','m','m','y','"','}']; | |
| // to String | |
| let string1: String = src1.iter().collect::<String>(); | |
| // to str | |
| let str1: &str = &src1.iter().collect::<String>(); | |
| // to vec of byte |
| /* | |
| Watch out, os.IsExist(err) != !os.IsNotExist(err) | |
| They are error checkers, so use them only when err != nil, and you want to handle | |
| specific errors in a different way! | |
| Their main purpose is to wrap around OS error messages for you, so you don't have to test | |
| for Windows/Unix/Mobile/other OS error messages for "file exists/directory exists" and | |
| "file does not exist/directory does not exist" |
| import { useEffect, useRef } from 'react'; | |
| import { useHistory } from 'react-router-dom'; | |
| export const usePrompt = (when: boolean, message: string = 'Are you sure you want to quit without saving your changes?') => { | |
| const history = useHistory(); | |
| const self = useRef(null); | |
| const onWindowOrTabClose = event => { | |
| if (!when) { |
A brief example on how to use npx to run gist based scripts.
Read the article here https://neutrondev.com/npm-vs-npx-whats-the-difference/
| class A | |
| class A2 extends A | |
| class B | |
| trait M[X] | |
| // | |
| // Upper Type Bound | |
| // | |
| def upperTypeBound[AA <: A](x: AA): A = x |
git reflog についてまとめてみるgit reflog で HEAD の移動履歴を、git reflog <ブランチ名> でそのブランチ先端が指していたコミットの一覧を確認可能
HEAD@{5}: HEAD の五つ前の状態を示す
2019-06-03
Note that Office2019 DO NOT support activate via simple copy/paste plist license file which is the simplest way to activate Office 2016. Fortunately, you can also use the VL Serializer tool, just install Office 2019 and Serializer, then run Serializer to activate.