| #lang racket/base | |
| (require | |
| net/http-easy) | |
| (define (base-url path) | |
| (string-append "https://httpbin.org" path)) | |
| ; request: GET | |
| ; response: plain string body |
| #lang racket/base | |
| (provide | |
| server-start) | |
| (require | |
| markdown | |
| net/url | |
| web-server/http | |
| web-server/servlet-env |
| #lang racket/base | |
| (require (for-syntax racket/base)) | |
| ; Reading Quotes | |
| ; see: https://docs.racket-lang.org/reference/reader.html | |
| ; ' quote #' syntax | |
| ; ` quasiquote #` quasisyntax | |
| ; , unquote #, unsyntax | |
| ; ,@ unquote-splicing #,@ unsyntax-splicing |
/var/www/nextcloud directory is available on /var/backups/var/www/nextcloud as user www-datamysqldump is installedrsync is installed
| [ | |
| { | |
| "id": 1, | |
| "radical": "一", | |
| "pinyin": "yī", | |
| "english": "one", | |
| "strokeCount": 1 | |
| }, | |
| { | |
| "id": 2, |
| (ns main (:gen-class)) | |
| ;; Snake :: [[int int]…] | |
| ;; vector of x,y tuples | |
| ;; head is first, tail is last | |
| ;; out-of-bounds? :: (int int int) -> bool | |
| ;; grid-size is 1-indexed, x+y are 0-indexed | |
| (defn out-of-bounds? [grid-size x y] | |
| (or (neg? x) (neg? y) (>= x grid-size) (>= y grid-size))) |
A predicate function returns a boolean true or false, and it's name ends with a ?. Ran against Clojure 1.10.0.
({:ns clojure.string,
:predicates
({:fn ends-with?, :arglists ([s substr])}
{:fn starts-with?, :arglists ([s substr])}
{:fn includes?, :arglists ([s substr])}
| const wrapPromise = fn => (...args) => | |
| new Promise(resolve => setTimeout( | |
| () => resolve(fn(...args)), | |
| Math.floor(Math.random() * 1500) + 250) | |
| ) | |
| const upper = wrapPromise(str => str.toUpperCase()) | |
| const underline = str => `__${str}__` | |
| const exclamate = wrapPromise(str => str + '!') | |
| // Util: Create promise chain |
| // | |
| // Tight coupling from A to B => A needs B to be defined, callable and adhere to an interface | |
| // No coupling from B to A => B does not need A in any way (pure fn) | |
| // | |
| function a() { b() } | |
| function b() {} | |
| a() | |
| // | |
| // No coupling from A to B => A and B work independently, |
Start a container in detached mode:
docker run -dit --name deb -e "LANG=C.UTF-8" -w "/root" debian:latest bash
Connect to it and do initial setup: