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Paolo G. Giarrusso Blaisorblade

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@mohanpedala
mohanpedala / bash_strict_mode.md
Last active May 19, 2024 11:31
set -e, -u, -o, -x pipefail explanation
@BretFisher
BretFisher / docker-for-mac.md
Last active May 15, 2024 05:19
Getting a Shell in the Docker Desktop Mac VM

2021 Update: Easiest option is Justin's repo and image

Just run this from your Mac terminal and it'll drop you in a container with full permissions on the Docker VM. This also works for Docker for Windows for getting in Moby Linux VM (doesn't work for Windows Containers).

docker run -it --rm --privileged --pid=host justincormack/nsenter1

more info: https://github.com/justincormack/nsenter1


@zsup
zsup / ddd.md
Last active May 13, 2024 09:29
Documentation-Driven Development (DDD)

Documentation-Driven Development

The philosophy behind Documentation-Driven Development is a simple: from the perspective of a user, if a feature is not documented, then it doesn't exist, and if a feature is documented incorrectly, then it's broken.

  • Document the feature first. Figure out how you're going to describe the feature to users; if it's not documented, it doesn't exist. Documentation is the best way to define a feature in a user's eyes.
  • Whenever possible, documentation should be reviewed by users (community or Spark Elite) before any development begins.
  • Once documentation has been written, development should commence, and test-driven development is preferred.
  • Unit tests should be written that test the features as described by the documentation. If the functionality ever comes out of alignment with the documentation, tests should fail.
  • When a feature is being modified, it should be modified documentation-first.
  • When documentation is modified, so should be the tests.
@troyfontaine
troyfontaine / 1-setup.md
Last active May 12, 2024 15:17
Signing your Git Commits on MacOS

Methods of Signing Git Commits on MacOS

Last updated March 13, 2024

This Gist explains how to sign commits using gpg in a step-by-step fashion. Previously, krypt.co was heavily mentioned, but I've only recently learned they were acquired by Akamai and no longer update their previous free products. Those mentions have been removed.

Additionally, 1Password now supports signing Git commits with SSH keys and makes it pretty easy-plus you can easily configure Git Tower to use it for both signing and ssh.

For using a GUI-based GIT tool such as Tower or Github Desktop, follow the steps here for signing your commits with GPG.

@gallais
gallais / Impredicative.v
Created February 14, 2018 16:51
Using Impredicativity to beat the positivity checker
Inductive T :=
| Var : nat -> T
| App : T -> T -> T.
Inductive S e : Prop :=
| def: forall R, (forall i, R i -> S i) ->
(forall e', R e' -> S (App e e')) -> S e.
Definition def' :
forall e, (forall e', S e' -> S (App e e')) -> S e.

Applied Functional Programming with Scala - Notes

Copyright © 2016-2018 Fantasyland Institute of Learning. All rights reserved.

1. Mastering Functions

A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.

val square : Int => Int = x => x * x
@FradSer
FradSer / iterm2_switch_automatic.md
Last active May 3, 2024 19:58
Switch iTerm2 color preset automatic base on macOS dark mode.

The latest beta (3.5) includes separate color settings for light & dark mode. Toggling dark mode automatically switches colors.

Vist iTerm2 homepage or use brew install iterm2-beta to download the beta. Thanks @stefanwascoding.


  1. Add switch_automatic.py to ~/Library/ApplicationSupport/iTerm2/Scripts/AutoLaunch with:
@danieleggert
danieleggert / GPG and git on macOS.md
Last active May 3, 2024 12:26
How to set up git to use the GPG Suite

GPG and git on macOS

Setup

No need for homebrew or anything like that. Works with https://www.git-tower.com and the command line.

  1. Install https://gpgtools.org -- I'd suggest to do a customized install and deselect GPGMail.
  2. Create or import a key -- see below for https://keybase.io
  3. Run gpg --list-secret-keys and look for sec, use the key ID for the next step
  4. Configure git to use GPG -- replace the key with the one from gpg --list-secret-keys
@drblue
drblue / fix_onedrive.sh
Last active April 16, 2024 21:54
Fix OneDrive for Mac CPU usage
#!/bin/bash
## Fix OneDrive for Mac CPU usage
##
## Seems this is still a problem 5 years later after I created this little gist.
## I have long since stopped using OneDrive (luckily), but according to
## comments below, I have added the new path for OfficeFileCache for macOS
## Mojave (10.14) and Catalina (10.15).
## Run this on macOS Mojave (10.14) and Catalina (10.15)
find ~/Library/Containers/ -type d -name OfficeFileCache -exec rm -r {} +
@gallais
gallais / UntypedLambda.agda
Created September 7, 2015 18:53
Interpreting the untyped lambda calculus in Agda
{-# OPTIONS --copatterns #-}
module UntypedLambda where
open import Size
open import Function
mutual
data Delay (A : Set) (i : Size) : Set where