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@jjwatt
jjwatt / yplay.scm
Last active July 9, 2024 13:35
The Y Combinator explained in a runnable Scheme file
;;; The Y Combinator explained in scheme.
;;; with credits to:
;;; https://mvanier.livejournal.com/2897.html
;;; Status: WIP
(define fibonacci
(lambda (n)
(cond ((= n 0) 0)
((= n 1) 1)
(else (+ (fibonacci (- n 1)) (fibonacci (- n 2)))))))
@hrchu
hrchu / 1. basic flow with auth code and access token
Last active February 21, 2024 09:27
OAuth 2.0 / OpenID Connect flow diagrams. Build it by http://www.plantuml.com/plantuml/uml/
@startuml
skinparam handwritten true
"You/Browser" -> slack.com: 1. I would like to access my files on Google Drive via your interface.
slack.com -> "You/Browser": 2. You should apply the "Authorization Code" from Google for me first.
"You/Browser" -> account.google.com: 3. I would like to permit slack.com to access my files.
account.google.com -> "You/Browser": 4. Are you sure?
"You/Browser" -> account.google.com: 5. [Y]
account.google.com -> "You/Browser": 6. Okay. Here is the "Authorization Code." Plz give it back to slack.com now.
"You/Browser" -> slack.com: 7. You can do what I asked now (with the Authorization Code which is just received from Google.)
slack.com -> account.google.com: 8. I would like to exchange the "Authorization Code" for the "Access Token."
@earthgecko
earthgecko / bash.generate.random.alphanumeric.string.sh
Last active July 4, 2024 17:31
shell/bash generate random alphanumeric string
#!/bin/bash
# bash generate random alphanumeric string
#
# bash generate random 32 character alphanumeric string (upper and lowercase) and
NEW_UUID=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)
# bash generate random 32 character alphanumeric string (lowercase only)
cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 32 | head -n 1