hmartiro

ZeroMQ vs Redis

This document is research for the selection of a communication platform for robot-net.

Goal

The purpose of this component is to enable rapid, reliable, and elegant communication between the various nodes of the network, including controllers, sensors, and actuators (robot drivers). It will act as the core of robot-net to create a standardized infrastructure for robot control.

Requirements:

samiraguiar

Note for newcomers:

In the shortcuts below, "C" stands for CTRL and "A" stands for "ALT". This is a convention
used in the Midnight Commander documentation and was kept here.

You can also use "ESC" instead of "ALT", which is useful on Macbooks.

Main View
---------------------------------------------------------------
- File/directory operations

yrevar

{0: 'tench, Tinca tinca',
 1: 'goldfish, Carassius auratus',
 2: 'great white shark, white shark, man-eater, man-eating shark, Carcharodon carcharias',
 3: 'tiger shark, Galeocerdo cuvieri',
 4: 'hammerhead, hammerhead shark',
 5: 'electric ray, crampfish, numbfish, torpedo',
 6: 'stingray',
 7: 'cock',
 8: 'hen',
 9: 'ostrich, Struthio camelus',

khfeng

# Suppose we already have LXD, and already add the default image repo as images:
# 1. Start a new Trusty LXC container
host:~$ lxc launch images:ubuntu/trusty/amd64 cuda-trusty

# 2. Download and install CUDA on *both* host & LXC container, from https://developer.nvidia.com/cuda-downloads
# Note that host and container have to have *exactly* the same driver version

# 3. Add necessary Nvidia devices to LXC container
host:~$ lxc config device add cuda-trusty nvidia0 unix-char path=/dev/nvidia0
host:~$ lxc config device add cuda-trusty nvidiactl unix-char path=/dev/nvidiactl

yossorion

What I Wish I'd Known About Equity Before Joining A Unicorn

Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.

This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would

Mic92

let
  region = "us-east-1";
  zone = "us-east-1a";
  accessKeyId = "default";
in {
  resources.ebsVolumes.cntr-disk = {
    accessKeyId = accessKeyId;
    tags.Name = "cntr-disk";
    inherit region;
    zone = zone;

mbinna

Effective Modern CMake

Getting Started

For a brief user-level introduction to CMake, watch C++ Weekly, Episode 78, Intro to CMake by Jason Turner. LLVM’s CMake Primer provides a good high-level introduction to the CMake syntax. Go read it now.

After that, watch Mathieu Ropert’s CppCon 2017 talk Using Modern CMake Patterns to Enforce a Good Modular Design (slides). It provides a thorough explanation of what modern CMake is and why it is so much better than “old school” CMake. The modular design ideas in this talk are based on the book [Large-Scale C++ Software Design](https://www.amazon.de/Large-Scale-Soft

luqmaan

const fs = require("fs");

const getTimerTemplate = (platform, importType, interval) => `
[Unit]
Description=Run ${platform}-${importType} every 15 minutes
Requires=${platform}-${importType}.service

[Timer]
Unit=${platform}-${importType}.service
OnUnitInactiveSec=${interval}

danbst

# First add this module to your /etc/nixos/configuration.nix
# ...
#   imports = [ /path/to/iphone.nix ];
#   iphone.enable = true;
#   iphone.user = "yourusername";
# ...
# Then rebuild system. Attach iPhone via cable, open terminal and run command `iphone`
# It will fail, but there will occure a dialog on your iPhone to "trust this computer"
# Press OK there and run `iphone` again. If it succeeds it will open a freshly mounted folder

WesThorburn

Linux: Compile C++ to WebAssembly and JavaScript using Emscripten and CMake

Download and Install Emscripten

• My preferred installation location is /home/user
• Get the latest sdk: git clone https://github.com/emscripten-core/emsdk.git
• Enter the cloned directory: cd emsdk
• Checkout main: git checkout main
• Install the lastest sdk tools: ./emsdk install latest
• Activate the latest sdk tools: ./emsdk activate latest
• Activate path variables: source ./emsdk_env.sh