Today I Learnt 5

Open Source Smart Watch

• Very similar to another project I have already heard about called the Watchy
• Made by Paul Smith with news over at Hackster.io.
• The project has a website and a GitHub organization.
• It has got a micro-USB port for data transfer and charging.
• The main one has a SD-card slot for data storage. The lite one has no SD-card slot.
• The components used are:
  • EPS32-micro-D4: 2×240 MHz, 320 KB RAM
  • Bluetooth 4.2 BR/EDR BLE
  • Wi-Fi 2.4GHz 802.11 b/g/n
  • GC9A01 240×240 16bit TFT display (round)
  • BMA400 Accelerometer + Pedometer
  • MCP73831 LiPo Charger
  • CH340E USB Serial
  • In the GPS edition
    • Quectel L96 GPS module
    • 4 MB RAM
    • microSD
• This is genuinely fascinating to me. Maybe someday I will make my own.

Python

list = ["E", "D", "C", "B", "A"]
print(list)

This gives you the following:

['E', 'D', 'C', 'B', 'A']

Now what if you wanted to print it a different format 🧐. Here are some options from geeksforgeeks:

1. Using for loop:

   for x in list:
     print(x, end=" ")
   

   This will give you:

   E D C B A
   

2. Without using loops: * symbol is used to print the list elements in a single line with space as the separator.

   print(*list)
   # or
   print(*list, sep = ", ")
   

   You get:

   E D C B A
   # or
   E, D, C, B, A
   

3. Convert the list into a string : using the join() method. ¹

   print(' '.join(list))
   

   Output:

   E D C B A
   

   • Using map() function : we can convert each item in a list to string and then join them.

     a = [1, 2, 3, 4, 5]
     print(' '.join(map(str, a)))
     

     We get:

     1 2 3 4 5
     

Can use tables inside a footnote of Hugo

As long as the table is aligned below the footnote, this works by default (Hugo version 81.0 with Papermod theme).

Anki

Python

• Lists are mutable.

• count() method returns the number of non-overlapping occurrences of substring

• Lists can have multiple occurrences of the same element.

• Slice works in [start:stop:step].

• Negative step in slice notation reverses the direction. Eg:

  t = '12345'
  print(t[::-1])
  print(t[::-2])
  

  produces the output:

  54321
  531
  

• // is a floor division operator, division rounded down.

  >>> a = 5//2
  >>> print a
  2
  

Math

• Simply Connected Domain
• Morera’s Theorem
• Cauchy’s Integral Theorem
• Winding Number