Xah Talk Show 2019-12-23 programable keypad, log your life (heatbeat, sleep, walk, email, keystroks, phone…), polymorphism explained
ye who suffer from the ills of modernity, cometh, a therapeutic session of melodiousnessness commences on YouTube.
topics talked:
- Wireless Mechanical Keyboard, VELOCIFIRE TKL02WS 87 Tenkeyless, Quiet Brown Switches, White Backlit Buy at amazon
- Korean Vocabulary Book: A Topic Based Approach 1st Edition Buy at amazon
- Programable Keypads
- How to Program Number Keypad as Function Keys
- List of Keylogging Software
- [The Personal Analytics of My Life By Stephen Wolfram. At https://writings.stephenwolfram.com/2012/03/the-personal-analytics-of-my-life/ ]
- Polymorphism, Dispatch, and the Tale of Poly-Tinting
polymorphism is a LANGUAGE FEATURE, where a function can have different behavior depending on the type of argument
def plus(a , b) {
# if a and b are numbers, then
return a + b
# if a and b are vectors or array, then do vector addition
return [a[0] + b[0], a[1] + b[1], ]
# or the a and b can be complex numbers
# or the a and b can be matrixes
# or the a and b can be tree
}
if a programing language does not let you define a function that has different behavior depending on argument, then, we say, this language do not have the fature of polymorphism. BUT, you can always write it yourself, and this is called ad hoc polymorphism.
def plus_vector(a , b) {
return [a[0] + b[0], a[1] + b[1], ]
}