ul

/*

Sketch for a cloud generator

By Mads Kjeldgaard, 2020

*/
(
~numChannels = 2;
s.options.numOutputBusChannels_(~numChannels);

ul

    - Specific Notmuch filters (and saved-searches) for:
      + The Feed (newsletters, blogs)
      + The Paper trail (receipts, ledger)
      + Screened Inbox (mail from folks you actually want to read)
      + Previously Seen (important mail that you've already read)
      + Unscreened Inbox (potential spam / stuff you don't want)
      
    - Elisp Functions to move / categorize emails from a particular sender. 
      + Adds tags needed by filters defined above to all email sent by a particular sender
      + Creates an entry in a DB file, which is used by the Notmuch post-new script when indexing new email, to auto-add the relevant tags.

ul

(ns org.rssys.lzw.coder
  (:require [clojure.java.io :as io])
  (:import (java.io InputStream OutputStream)
           (com.github.jinahya.bit.io StreamByteInput StreamByteOutput DefaultBitOutput DefaultBitInput)))

(def MAX-BITS-LENGTH 18)
(def EOF 256)

(defn lzw-encode-stream
  [^InputStream in-stream ^OutputStream out-stream]

ul

Achieving warp speed with Rust

Contents:

• Number one optimization tip: don't
• Never optimize blindly
• Don't bother optimizing one-time costs
• Improve your algorithms
• CPU architecture primer
• Keep as much as possible in cache
• Keep as much as possible in registers

ul

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Element

Box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
• elem.clientLeft, elem.clientTop, elem.clientWidth, elem.clientHeight
• elem.getClientRects(), elem.getBoundingClientRect()

ul

The project can be built using Lumo

npm install -g lumo-cljs
lumo build.cljs

ul

module WrapperA = {
  module A = {
    include ReactRe.Component;
    let name = "A";
    
    type props = ();
    
    let render _ => <div>(ReactRe.stringToElement "A")</div>;
  };
  

ul

Experimenting with pitch detection and spectral estimators

See the question and discussion on StackOverflow: How to get the fundamental frequency using Harmonic Product Spectrum?.

We’re trying to estimate the fundamental frequency of a voiced A4 note (440 Hz). (See the question for link to audio clip.)

Harmonic product spectrum

Result: full data, 0 to 2 KHz

ul

This is an attempt to make assert more friendly by including more details in the assertion error.

• show the result of the assertion expression
• show local variable values used in assertion form

In other words, this should make assertion errors easier to reason about:

AssertionError Assert failed: Should be equal

ul

(defn my-get
  "@param {*} m
   @param {*} k
   @return {nil|Object}"
  [m k]
  (get m k))

(defn foo
  "@param {!Object} x" ;; non-nullable
  [x] x)