andreivasiliu

use core::fmt::Debug;
use std::str::FromStr;

trait ArgsFromSource {
    const ARG_COUNT: usize;
    fn from_source(source: &Source) -> Self;
}

trait ArgFromSource {
    fn from_source(source: &Source, index: usize) -> Self;

andreivasiliu

Demi Nix:

• build1 + build2 vms
  • Reduce bare-metal code to something very small, perhaps just vagrant
    • That probably means no vagrant for demi1 + demi2
• Build the whole VM with nix
• Split the VM image/OS build, and the Demi build
  • Perhaps split the VM image build and OS build as well, somehow
    • E.g. build grub/initrd into the image, but the rootfs outside
• This will allow rebuilding Demi stuff without rebuilding the OS

andreivasiliu

Demi Cluster:

• A cluster of two halves
• There is no master or slave; both demi hosts are masters
• Security through isolation:
  • All web services (HTTP, DNS) run inside Demi VMs
  • Demi VMs may not access anything on the LAN, or on their host
  • Demi VMs may access each other
• Security through minimalism:
• The Demi VMs run on minimal Demi bare metal hosts

andreivasiliu

From fce8a3045a4ef921f749d9e42fffe5075c6ddedc Mon Sep 17 00:00:00 2001
From: Peter da Silva <peter.dasilva@flightaware.com>
Date: Thu, 14 Jul 2022 18:46:46 +0000
Subject: [PATCH 5/5] Update version number.

---
 configure.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.in b/configure.in

andreivasiliu

;; This is an operating system configuration generated
;; by the graphical installer.

#!curly-infix

{use-modules(gnu())}
{use-service-modules(desktop networking ssh xorg)}

{operating-system(
  locale("en_US.utf8")

andreivasiliu

# From: https://wiki.tcl-lang.org/page/TemplaTcl%3A+a+Tcl+template+engine                                                                                                                  
source tt.tcl

set template {
    <element><%= $myvar %></element>
}

# Create template engine                                                                                                                                                                   
TemplaTcl::create tt

andreivasiliu

Sample barcode reader I made to learn JavaScript

Resources:

• JS barcode scanner library: https://github.com/serratus/quaggaJS
• Live examples: https://serratus.github.io/quaggaJS/examples/
• Sample code:
  • https://github.com/serratus/quaggaJS/blob/master/example/file_input.js
  • https://github.com/serratus/quaggaJS/blob/master/example/file_input.html
  • https://github.com/serratus/quaggaJS/blob/master/example/css/styles.css

andreivasiliu

state["phase"] = (in["phase"] or 0) + in["frequency"]
state["phase"] = state["phase"] + in["frequency"]
out["out"] = sin(state["phase"])

andreivasiliu

def show_map() -> Iterable[str]:
    yield f"The map has {len(bat_map)} rooms."
    if not current_room:
        return

    yield f"Current room: {current_room.title}"

    links = bat_links.get(current_room.room_id)
    if links:
        inc = len(links.incoming)

andreivasiliu

def show_map() -> Iterable[str]:
    yield f"The map has {len(bat_map)} rooms."
    if not current_room:
        return

    yield f"Current room: {current_room.title}"

    links = bat_links.get(current_room.room_id)
    if links:
        inc = len(links.incoming)