Ondrej Telka ondt

Here is the best setup (I think so :D) for K-series Keychron keyboards on Linux.

Note: many newer Keychron keyboards use QMK as firmware and most tips here do not apply to them. Maybe the ones related to Bluetooth can be useful, but everything related to Apple's keyboard module (hid_apple) on Linux, won't work. As far as I know, all QMK-based boards use the hid_generic module instead. Examples of QMK-based boards are: Q, Q-Pro, V, K-Pro, etc.

Most of these commands have been tested on Ubuntu 20.04 and should also work on most Debian-based distributions. If a command happens not to work for you, take a look in the comment section.

Make Fn + F-keys work (NOT FOR QMK-BASED BOARDS)

Older Keychron keyboards (those not based on QMK) use the hid_apple driver on Linux, even in the Windows/Android mode, both in Bluetooth and Wired modes.

Rust Error Handling Cheatsheet - Result handling functions

Introduction to Rust error handling

Rust error handling is nice but obligatory. Which makes it sometimes plenty of code.

Functions return values of type Result that is "enumeration". In Rust enumeration means complex value that has alternatives and that alternative is shown with a tag.

Result is defined as Ok or Err. The definition is generic, and both alternatives have

Odkazy na statnicove otazky na Dropboxu

Zdravím!

Níže najdete odkazy na jednotlivé státnicové otázky programu OI 2016. Odkazy vedou na Dropbox kde můžete doplňovat, komentovat atd.

Jak tisknout

V Dropbox Paper nahoře vpravo > ... > print. V nastavení tisku dejte další možnosti a dejte velikost na 80%, defaultní velikost je strašně velká. Taky doporučuji vypnout všehny informace v zápatí a záhlaví. Defaultně je tam URL, čas apod.

This document is a listing of the functions/macros in Scheme which will be useful in CS 135.

Scheme Built-Ins
Common Predicates
Commands We Will Define

Basic Scheme Commands

and
append

	{
	inputs = {
	nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
	};

	outputs =
	{ self, nixpkgs }:
	let
	rust-src =
	{ stdenv, fetchzip }:

	{ pkgs ? import <nixpkgs> {}, lib ? pkgs.lib, stdenv ? pkgs.stdenv, zig ? pkgs.zig, static ? true, target }:

	with lib;
	with builtins;

	# Zig based cross-compiling toolchain
	#
	# Major known issues:
	# - Zig seems to randomly fail with parallel builds with 'error: unable to build ... CRT file: BuildingLibCObjectFailed'
	# This seems like race condition with the cache?

	with import ./. {};

	let

	extraSources = [];
	lib = pkgs.lib;

	optionsListVisible =
	lib.filter (opt: opt.visible && !opt.internal)
	(lib.optionAttrSetToDocList options);

	#!/usr/bin/env bash
	# Reference: https://github.com/nagygergo/jetbrains-toolbox-install/blob/master/jetbrains-toolbox.sh

	# Note that we grep for linux here, if you are using this on mac/windows please see json output
	TOOLBOX_URL=$(curl --silent 'https://data.services.jetbrains.com//products/releases?code=TBA&latest=true&type=release' \
	-H 'Origin: https://www.jetbrains.com' \
	-H 'Accept-Encoding: gzip, deflate, br' \
	-H 'Accept-Language: en-US,en;q=0.8' \
	-H 'Accept: application/json, text/javascript, /; q=0.01' \
	-H 'Referer: https://www.jetbrains.com/toolbox/download/' \

	{ config, pkgs, ... }:

	let
	# Import unstable channel.
	# sudo nix-channel --add http://nixos.org/channels/nixpkgs-unstable nixpkgs-unstable
	# sudo nix-channel --update nixpkgs-unstable
	unstable = import <nixpkgs-unstable> {};
	in

	{

	#include <stdio.h>

	int main(void)
	{
	printf("hello, world\n");
	}