Broken attachment filename with Apple mail

With Apple mail, Korean attachment filename is broken.

Attachment filename is encoded to UTF-8

Run the following command within Terminal, then restart Apple mail.

$ defaults write com.apple.mail NSPreferredMailCharset "UTF-8"

Rotate 7" touchscreen of Raspberry PI

• Add parameters to /boot/config.txt

  display_rotate=1
  dtoverlay=rpi-ft5406,touchscreen-swapped-x-y=1,touchscreen-inverted-x=1
  

• Parameters

  Rotate display
  
  display_rotate=0 # normal
  display_rotate=1 # rotate 90°
  display_rotate=2 # rotate 180°
  display_rotate=3 # rotate 270°
  

  Touchscreen
  
  touchscreen-size-x      Touchscreen X resolution, default 800
  touchscreen-size-y      Touchscreen Y resolution, default 600
  touchscreen-inverted-x  Invert touchscreen X coordinates, default 0
  touchscreen-inverted-y  Invert touchscreen Y coordinates, default 0
  touchscreen-swapped-x-y Swap X and Y coordinates, default 0
  

Language performance test

Lower value shows better performance

• C
  

  #include <stdio.h>
  
  int fib(int n) {
      if(n == 1) return 0;
      if(n == 2) return 1;
      return fib(n - 2) + fib(n - 1);
  }
  
  int main() {
      int i = 0;
      for(i = 1; i <= 40; i++) {
          printf("%d %d\n", i, fib(i));
      }
      printf("\nC\n");
      return 0;
  }
  

• Java
  

  public class Fib {
   
      public static int calc(int n) {
          if(n <= 1) return 0;
          if(n == 2) return 1;
          return Fib.calc(n - 2) + Fib.calc(n - 1);
      }
      public static void main(String[] args) {
          for(int i = 1; i <= 40; i++) {
              System.out.println(i + " " + Fib.calc(i));
          }
          System.out.println("\nJAVA");
      }
   
  }
  

• JavaScript
  

  #!/usr/bin/env node
  
  let range = Array.from({length: 40}, (x, i) => i+1);
  let fib = n => n === 1 ? 0 : n === 2 ? 1 : fib(n - 2) + fib(n - 1);
  
  range.forEach( i => console.log(i, fib(i)) );
  console.log("\nJavaScript");
  

• PHP
  

  #!/usr/bin/env php
  <?php
  function fib(int $n) {
      if ($n === 1) return 0;
      if ($n === 2) return 1;
      return fib($n - 2) + fib($n - 1);
  }
  
  foreach (range(1, 40) as $i) {
      echo $i, ' ', fib($i), PHP_EOL;
  }
  echo "\nPHP\n";
  

• Python
  

  #!/usr/bin/env python
  
  def fib(n):
    if n == 1:
      return 0
    elif n == 2:
      return 1
    return fib(n - 2) + fib(n - 1)
  
  if __name__ == "__main__":
    for i in range(1, 40 + 1):
      print(i, fib(i))
    print("\nPYTHON")
  

• Ruby
  

  #!/usr/bin/env ruby
  
  def fib(n)
    return 0 if n == 1
    return 1 if n == 2
    return fib(n - 2) + fib(n - 1)
  end
  
  (1..40).each do |i|
    puts "#{i.to_s} #{fib(i).to_s}"
  end
  puts "\nRUBY"