mjhanninen

Running Playscii on macOS

Date: Apr 15, 2023

This document describes how I got Playscii running on macOS using the following setup:

• Playscii 9.17.1
• Python 3.11.3
• macOS Ventura 13.2.1
• MacBook Air (M1)

mjhanninen

Examples on how binary_search_by behaves

use std::collections::VecDeque;

fn main() {
    let ex = |q: &VecDeque<i32>, y: i32, desc: &str| {
        println!("search({}) -> {:?}\t# {}", y, q.binary_search_by(|&x| x.cmp(&y)), desc);
    };
    let q = VecDeque::from([1, 2, 3, 5, 6, 7]);

mjhanninen

CREATE TEMP TABLE input (lineno SERIAL, line TEXT);

--\copy input (line) FROM '13-test-input.txt';
\copy input (line) FROM '13-input.txt';

CREATE TEMP TABLE arrivals(arrival_time) AS
SELECT line::int FROM input WHERE lineno = 1;

CREATE TEMP TABLE bus_lines AS
SELECT column_,

mjhanninen

PlantUML example for Malli

@startuml fig-malli-order-for-burgers.svg

  hide empty members

  class "Burger" {
    :name string?
 :description string?

mjhanninen

#!/usr/bin/env python3
from http.server import SimpleHTTPRequestHandler
import socketserver
SimpleHTTPRequestHandler.extensions_map[".wasm"] = "application/wasm"
print("Serving at port 8000")
socketserver.TCPServer(("", 8000), SimpleHTTPRequestHandler).serve_forever()

mjhanninen

#!/usr/bin/perl

use strict;

my %fg = ();
my %bg = ();
for my $i (0 .. 255) {
    $fg{$i} = "[38;5;${i}m";
    $bg{$i} = "[48;5;${i}m";
}

mjhanninen

Fixes to A. Sanjeevs' Vue.js tutorial

If you work through [Anirudh Sanjeevs'][sanjeev] excellent tutorial on setting up a [Vue.js][vuejs] project with [Webpack][webpack] and some other goodies, you'll probably hit a handful of minor problems. The tutorial was written a year ago and things have changed a lot since then which naturally explains the issues. So let's tackle them one by one.

The first problem is that Vue.js fails to mount the app component and raises the following error:

mjhanninen

Delayed computation in C++

Inspired by Bartosz Milewski's article Getting Lazy with C++.

mjhanninen

// $ clang++ --std=c++11 defaultref.cpp
// $ ./a.out
// Calling without the default argument:
//
// foo in main pre-increment        = xyzzy
// foo in main post-incement        = yzxxz
// foo in withFoo pre-increment     = yzxxz
// foo in withFoo post-increment    = zxyyx
// foo in main post-withFoo         = zxyyx
//

mjhanninen

<?xml version="1.0"?>
<root>
  <item>
    <name>My Emacs tweaks</name>
    <item>
      <name>Enable Control_L+Command_L+D on Emacs</name>
      <identifier>private.emacs.enable_control_meta_d</identifier>
      <only>EMACS</only>
      <autogen>
        --KeyToKey--