EmmanuelOga

Kalai's Rust backend: measurements and things to try

Notes for the Kalai maintainers. Both toolchains were built and run on one machine (kalai 9a2066b9, rustc 1.83.0, icu4x a1123ac, Apple Silicon). Everything below is a number produced there or a pointer into the source.

Summary

• ^:ref on a parameter already emits &T and works. What is missing is the & at call sites, and any analysis to decide where the annotation goes. Smallest change with the

EmmanuelOga

Raster to SVG Conversion Tools (2025)

AI-Powered

• https://vectorizer.ai - Deep learning vectorizer with shape recognition, sub-pixel precision. Proprietary. $9.99/mo or API credits.
• https://www.recraft.ai/ai-image-vectorizer - AI vectorizer with 50 free daily credits, integrated design platform. Proprietary. Free tier / $20+/mo for Pro.
• https://www.adobe.com/products/illustrator.html - Image Trace 2.0 with gradient detection (Illustrator 2025). Proprietary. ~$23/mo (Creative Cloud).

Traditional/Commercial

• https://vectormagic.com - Stanford-originated tracing algorithms, industry standard for logos. Proprietary. $5.49/mo online / $295 desktop.
• https://www.coreldraw.com - PowerTRACE with AI-assisted preprocessing. Proprietary. ~$239/yr subscription / ~$549 perpetual.

EmmanuelOga

/**
 * LRUD: Spatial Edition
 *
 *  @@@@@@@@@@@@@@@@@@@@@@   @@@@@@@@@@@@@@@@@@@@@@   @@@@@@@@@@@@@@@@@@@@@@
 *  @@@@@@      '@@@@@@@@@   @@@@@@      '@@@@@@@@@   @@@@@@@@      '@@@@@@@
 *  @@@@@@  @@.   @@@@@@@@   @@@@@@  @@.    @@@@@@@   @@@@@     @@@@.   @@@@
 *  @@@@@@  @@@@  @@@@@@@@   @@@@@@  @@@@   @@@@@@@   @@@@   @@@@@@@@@@@@@@@
 *  @@@@@@        @@@@@@@@   @@@@@@        @@@@@@@@   @@@   @@@@@@@@@@@@@@@@
 *  @@@@@@  @@@@@.  @@@@@@   @@@@@@  @@@@@.  @@@@@@   @@@   @@@@@@@@@@@@@@@@
 *  @@@@@@  @@@@@   @@@@@@   @@@@@@  @@@@@   @@@@@@   @@@@    @@@@@@@@/ @@@@

EmmanuelOga

package main

import "fmt"

var cost int

func f2(s, e int) int {
	cost += 1

	if e <= s {

EmmanuelOga

1. https://ziglearn.org/
2. https://mitchellh.com/zig
3. https://www.openmymind.net/learning_zig/
4. https://floooh.github.io/2020/08/23/sokol-bindgen.html
5. https://github.com/ratfactor/ziglings

EmmanuelOga

Some resources on programming, computer science vs engineering, optimization:

Considering how modern CPUs work in the implementation of algorithms (vs theoretical, pure C.S. analysis)

• https://queue.acm.org/detail.cfm?id=1814327

What Every Programmer Should Know About Memory

• https://www.akkadia.org/drepper/cpumemory.pdf

EmmanuelOga

basicpart(rim).
basicpart(spoke).
basicpart(rearframe).
basicpart(handles).
basicpart(gears).
basicpart(bolt).
basicpart(nut).
basicpart(fork).

assembly(bike, [wheel, wheel, frame]).

EmmanuelOga

import it.unimi.dsi.fastutil.objects.ObjectAVLTreeSet

data class Quad(val s: String = "", val p: String = "", val o: Comparable<Any>? = null, val c: String = "") :
    Comparable<Quad> {

    override fun compareTo(other: Quad): Int = compareValuesBy(this, other, Quad::s, Quad::p, Quad::o, Quad::c)

    override fun toString(): String = "Q<S=$s P=$p O=$o C=$c>"
}

EmmanuelOga

package com.emmanueloga.xml

import com.emmanueloga.Config
import com.emmanueloga.FISHX
import com.emmanueloga.NAMESPACES
import com.emmanueloga.logger
import net.sf.saxon.s9api.*
import net.sf.saxon.s9api.ItemType.*
import net.sf.saxon.s9api.OccurrenceIndicator.*
import net.sf.saxon.s9api.SequenceType.makeSequenceType

EmmanuelOga

.prefix : "https://emmanueloga.com/"

.prefix dc: "https://dc.com/rdf"
.prefix rdf: "https://w3.org/rdf"
.prefix rf: "https://rainbow.fish/"
.prefix schema: "https://google.com/schema"

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

rf:topic(:)