A primer/refresher on the category theory concepts that most commonly crop up in conversations about Scala or FP. (Because it's embarassing when I forget this stuff!)
I'll be assuming Scalaz imports in code samples, and some of the code may be pseudo-Scala.
A functor is something that supports map.
| # Copy and paste the following snippet, including brackets, into the Terminal | |
| ( | |
| set -e; | |
| cd "$(mktemp -d)" | |
| curl -LO 'http://www.newosxbook.com/tools/jtool2.tgz' | |
| tar -x -f jtool2.tgz | |
| lipo jtool2 -thin x86_64 -output jtool2.x86_64 | |
| lipo disarm -thin x86_64 -output disarm.x86_64 | |
| sudo mkdir -p /usr/local/bin |
I wanted to run Microk8s on a Proxmox 6 host inside of an LXC container. These are my notes from the journey.
| @echo off | |
| cmdkey.exe /list > "%TEMP%\List.txt" | |
| findstr.exe Target "%TEMP%\List.txt" > "%TEMP%\tokensonly.txt" | |
| FOR /F "tokens=1,2 delims= " %%G IN (%TEMP%\tokensonly.txt) DO cmdkey.exe /delete:%%H | |
| del "%TEMP%\List.txt" /s /f /q | |
| del "%TEMP%\tokensonly.txt" /s /f /q | |
| echo All done | |
| pause |
| cd ~/Library/Android/sdk/platform-tools/ | |
| # Get the hash of the mitmproxy-ca certificate. | |
| openssl x509 -inform PEM -subject_hash_old -in ~/.mitmproxy/mitmproxy-ca.pem | head -1 | |
| # We will use this hash value, append '.0' (dot zero) and use this as the filename for the resulting Android certificate | |
| cat ~/.mitmproxy/mitmproxy-ca.pem > c8750f0d.0 | |
| openssl x509 -inform PEM -text -in ~/.mitmproxy/mitmproxy-ca.pem -out /dev/null >> c8750f0d.0 | |
| # In an other terminal, we will start the emulator with writable /system volume |
This (and related gists) captures how i created my docker swarm architecture. This is intended mostly for my own notes incase i need to re-creeate anything later! As such expect some typos and possibly even an error...
Each major task has its own gist, this is to help with maitainability long term.
I originally created this as a short to-do list of study topics for becoming a software engineer, but it grew to the large list you see today. After going through this study plan, I got hired as a Software Development Engineer at Amazon! You probably won't have to study as much as I did. Anyway, everything you need is here.
The items listed here will prepare you well for in an interview at just about any software company, including the giants: Amazon, Facebook, Google or Microsoft. >
I frequently administer remote servers over SSH, and need to copy data to my clipboard. If the text I want to copy all fits on one screen, then I simply select it with my mouse and press CMD-C, which asks relies on m y terminal emulator (xterm2) to throw it to the clipboard.
This isn't practical for larger texts, like when I want to copy the whole contents of a file.
If I had been editing large-file.txt locally, I could easily copy its contents by using the pbcopy command:
| # 1. put frpc and frpc.ini under /usr/local/frpc/ | |
| # 2. put this file (frpc.service) at /etc/systemd/system | |
| # 3. run `sudo systemctl daemon-reload && sudo systemctl enable frpc && sudo systemctl start frpc` | |
| # Then we can manage frpc with `sudo service frpc {start|stop|restart|status}` | |
| # See also: https://nosame.net/use-frp-to-reverse-proxy-your-nas/ | |
| # Alternative for server: | |
| # - Offical: https://github.com/fatedier/frp/blob/a4cfab6/conf/systemd/frpc%40.service | |
| [Unit] |
| import UIKit | |
| import WebKit | |
| class WorkaroundWebViewController: UIViewController, WKNavigationDelegate { | |
| let request: URLRequest | |
| private let websiteDataStore = WKWebsiteDataStore.default() | |
| private var webView: WKWebView! | |
| private var initialDummyNavigation: WKNavigation? | |