shirohana

// @flow
import { useCallback, useState } from 'react'
import { useFocusEffect } from '@react-navigation/native'

export default function useNavigateLock () {
  const [isLocked, setIsLocked] = useState(false)

  useFocusEffect(useCallback(() => {
    setIsLocked(false)
  }, []))

shirohana

shirohana

shirohana

.PHONY = inc

COUNTER_FILE = COUNTER

SOURCE_COUNTER = if [[ ! -e $(COUNTER_FILE) ]]; then touch $(COUNTER_FILE); fi; set -a; source $(COUNTER_FILE);

inc:
	@$(SOURCE_COUNTER) \
	echo $$COUNTER; \
	echo 'export COUNTER='$$((COUNTER + 1)) > $(COUNTER_FILE)

shirohana

/**
 * According to the example, we can know that Object-Destructuring
 * has a left-to-right order (doesn't checked is it related to
 * transpiler or is standard).
 */

class Test {
  get prop1 () {
    this._prop2 = 'prop2'
    return (this._prop1 = 'prop1')

shirohana

[alias]
  lg = log --graph --abbrev-commit --decorate --date=relative --format=format:'%C(bold blue)%h%C(reset) - %C(bold green)(%ar)%C(reset) %C(white)%s%C(reset) %C(dim white)- %an%C(reset)%C(bold yellow)%d%C(reset)'
  lga = log --graph --abbrev-commit --decorate --date=relative --format=format:'%C(bold blue)%h%C(reset) - %C(bold green)(%ar)%C(reset) %C(white)%s%C(reset) %C(dim white)- %an%C(reset)%C(bold yellow)%d%C(reset)' --all
  range = show --oneline --quiet
  tracked = ls-files --stage
  untracked = ls-files --exclude-standard --others
  ignored = ls-files --ignored --exclude-standard --others
  conflicts = diff --name-only --diff-filter=U

shirohana

#!/bin/bash

REMOVE_DIRS=$(ls -d $(yarn cache dir)/* | grep $@)

if [ -z REMOVE_DIRS ]; then
  echo Empty
else
  for dir in $REMOVE_DIRS; do
    read -p "rm -rf $dir? " -n 1 -r
    echo  # Present a newline

shirohana

[alias]
  lg = log --graph --abbrev-commit --decorate --date=relative --format=format:'%C(bold blue)%h%C(reset) - %C(bold green)(%ar)%C(reset) %C(white)%s%C(reset) %C(dim white)- %an%C(reset)%C(bold yellow)%d%C(reset)'
  lga = log --graph --abbrev-commit --decorate --date=relative --format=format:'%C(bold blue)%h%C(reset) - %C(bold green)(%ar)%C(reset) %C(white)%s%C(reset) %C(dim white)- %an%C(reset)%C(bold yellow)%d%C(reset)' --all
  range = show --oneline --quiet
  tracked = ls-files --stage
  untracked = ls-files --exclude-standard --others
  ignored = ls-files --ignored --exclude-standard --others

shirohana

#include <iostream>
#include <iomanip>

class Tromino {
public:
  static int* Solve(int m, int block) {
    int width = static_cast<int> (pow(2, m));
    int *matrix = new int[width * width] {0};

    n_ = 1;

shirohana

簡易計算機練習

試製一符合題目要求之簡易計算機

• 輸入符號為 + - * / ( )
• 輸入數字皆為 實數
• 製作包含括弧，考慮四則運算邏輯的計算機
• 輸入皆為合法算式，無須考慮算式錯誤
• 運算元之間皆以空格 作為切割
• 運算元可為負數 (如: 1 * -3)