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@dvf
dvf / change-codec.md
Last active Jan 24, 2022
Enable High Quality mode on your headphones (Updated for macOS Catalina)
View change-codec.md

If you're using a high-end bluetooth headset on your Macbook Pro it's likely your mac is using an audio codec which favors battery efficiency over high quality. This results in a drastic degradation of sound, the SBC codec is the likely culprit, read more about it here.

Find out what codec you're using

  1. Play a song on your headphones
  2. Option (⌥) click the Bluetooth button at the top of your screen Inspect the Bluetooth Coded
  3. If you're using AAC or aptX, you can stop here—those are the highest quality codecs.

Change your codec to AAC or aptX

@blixt
blixt / OculusQuestCloudGaming.md
Last active Jul 30, 2021
Playing SteamVR games on the Oculus Quest
View OculusQuestCloudGaming.md

Playing SteamVR games on the Oculus Quest, without owning a PC

Setting up your Virtual Machine

We'll be creating a new Virtual Machine on Microsoft's cloud platform, Azure. The VM will have a beefy GPU just like a home computer so it can be used for playing games.

  1. Go to [the Azure portal][azure] and sign up or log in.

  2. If you are on a Free account, first go to Subscriptions and upgrade it to a Pay-as-you-go plan. Don't worry, you will get to keep any free credits you have. Azure's interface is a bit slow so this will take a minute.

    ⚠️ Make sure to not include any support plan because they will charge you monthly!

View what each nix Dev should know.md

fix function - https://github.com/NixOS/nixpkgs/blob/9f087964709174424bca681b600af8ee8e763df5/lib/fixed-points.nix#L19 , https://en.m.wikipedia.org/wiki/Fixed_point_(mathematics) , point where x = f(x) = f(f(f(f....f(x)....)))

rec { a = 1; b = a + 1; } is the same as fix (self: { a = 1; b = self.a + 1; })

builtins.trace - https://github.com/NixOS/nixpkgs/blob/9f087964709174424bca681b600af8ee8e763df5/lib/debug.nix#L4 trace has different flavors, http://hackage.haskell.org/package/base-4.12.0.0/docs/Debug-Trace.html#v:trace all lazy languages have trace

builtins.seq - in lazy languages data is represented as thunks (IF data has not been yet evaluated THEN it's pointer on function that should produce this data ELSE it's pointer on data), builtins.seq forces first layer of data to evaluate (evaluates it to WHNF?), builtins.deepSeq is recursive variant of seq, it forces whole data to evaluate (evaluates it to NF?), (more https://wiki.haskell.org/Seq, https://www.google.com/amp/s/amp.reddit.

@lionello
lionello / .direnvrc
Last active Aug 6, 2019 — forked from adisbladis/.direnvrc
Direnv nix cache. Put this file in your HOME folder.
View .direnvrc
#!/bin/bash
#
# Cache nix-shell environment
#
# - watches shell.nix (or default.nix), ~/.direnvrc and .envrc
# - based on https://github.com/direnv/direnv/wiki/Nix
#
use_nix() {
local shell_file=$(test -f shell.nix && echo shell.nix || echo default.nix)
if [[ ! -f "$shell_file" ]]; then return; fi
@sveitser
sveitser / Entropy.ipynb
Last active Sep 7, 2018
Was wondering about entropy of pass phrases.
View Entropy.ipynb
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View -
{ pkgs ? import <nixpkgs> {} }:
let
inherit (pkgs) lib stdenv ruby_2_3 rake bundler bundlerEnv openssl defaultGemConfig;
rubyEnv = bundlerEnv {
name = "mezzo";
ruby = ruby_2_3;
gemdir = ./.;
@adisbladis
adisbladis / .direnvrc
Created Jun 6, 2018
direnvrc nix cache
View .direnvrc
use_nix() {
local shell_file=$(test -f shell.nix && echo shell.nix || echo default.nix)
local cache_key=$(nix-instantiate "$shell_file" 2> /dev/null | shasum -a 1 | cut -d ' ' -f 1)
# Use ram as virtualenv storage
local tmpdir
case $(uname -s) in
Linux*) tmpdir=$XDG_RUNTIME_DIR;;
Darwin*) tmpdir_SDK=$TMPDIR;;
*) tmpdir=/tmp
@marceloalmeida
marceloalmeida / .gitattributes
Last active Apr 13, 2021
How to show diffs for gpg-encrypted files?
View .gitattributes
*.gpg filter=gpg diff=gpg
*.asc filter=gpg diff=gpg
@carlgieringer
carlgieringer / integration-request.vtl
Last active Feb 26, 2020
AWS API Gateway Integration Request Lambda Proxy (LAMBDA_PROXY) Velocity Template Language (VTL)
View integration-request.vtl
## MIT License
##
## Copyright (c) 2017 Carl Gieringer
##
## Permission is hereby granted, free of charge, to any person obtaining a copy
## of this software and associated documentation files (the "Software"), to deal
## in the Software without restriction, including without limitation the rights
## to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
## copies of the Software, and to permit persons to whom the Software is
## furnished to do so, subject to the following conditions:
@joepie91
joepie91 / .md
Last active Oct 7, 2021
A *complete* listing of operators in Nix, and their predence.
View .md

Lower precedence means a stronger binding; ie. this list is sorted from strongest to weakest binding, and in the case of equal precedence between two operators, the associativity decides the binding.

Prec Abbreviation Example Assoc Description
1 SELECT e . attrpath [or def] none Select attribute denoted by the attribute path attrpath from set e. (An attribute path is a dot-separated list of attribute names.) If the attribute doesn’t exist, return default if provided, otherwise abort evaluation.
2 APP e1 e2 left Call function e1 with argument e2.
3 NEG -e none Numeric negation.
4 HAS_ATTR e ? attrpath none Test whether set e contains the attribute denoted by attrpath; return true or false.
5 CONCAT e1 ++ e2 right List concatenation.
6 MUL e1 * e2 le