geon’s gists

geon / signal.zig

Created June 18, 2024 18:51

Experiment with sending messages between theads.

	const std = @import("std");

	fn Signal(comptime T: type) type {
	return struct {
	message: T,
	readyToRecieveMessage: std.Thread.Semaphore,
	messageHasBeenSet: std.Thread.Semaphore,

	const Self = @This();

geon / recursive-iterator.zig

Last active June 18, 2024 09:53

Implementing simple recursion as an iterator in Zig 0.11.0.

	const std = @import("std");

	const Buffer = std.ArrayList(u8);

	const source = [_]u8{ 1, 2, 3, 4, 5 };
	const expectedOrder = [_]u8{ 1, 2, 3, 4, 5, 5, 4, 3, 2, 1 };

	fn recursive(read: []const u8, write: *Buffer) !void {
	if (read.len > 0) {
	try write.append(read[0]);

geon / Main.asm

Created August 1, 2021 20:47

Modified version of the interrupt handling in https://www.youtube.com/watch?v=LpG9gqPtNLo

geon / async-iterator-server.ts

Created November 30, 2018 08:47

How to build a socket server with async and for-await.

	import { createServer, Socket } from "net";

	// Promisified socket.write().
	const write = (socket: Socket, data: Buffer \| string) =>
	new Promise((resolve, reject) =>
	socket.write(data as Buffer, (error: Error \| undefined) => {
	if (error) {
	reject();
	} else {
	resolve();

geon / tsbug.ts

Last active November 20, 2017 14:50

	console.log(myFunction());

	const myConstant = "";

	function myFunction(myArgument: string = myConstant): string {
	return myArgument;
	}

geon / demo.sql

Created June 1, 2017 12:37

pipelinedb event clustering


	-- DROP SCHEMA public CASCADE;
	-- CREATE SCHEMA public;



	-- The bad measurements that should be clustered into errors.
	CREATE STREAM bad_measurements ("measurement" REAL, "timestamp" TIMESTAMPTZ);

	-- This is only useful because it create an output stream of deltas, important for clustering events.

geon / keyof.ts

Created December 8, 2016 12:13

Typed Backbone-style models with `keyof` in Typescript 2.1


	class Model<T> {
	props: T;
	constructor(initial: T \| void){
	if (initial) {
	this.props = initial;
	}
	}
	set<K extends keyof T>(propName: K, value: T[K]) {
	this.props[propName] = value;

geon / index.jade

Created February 5, 2016 21:46

Flexbox full-page web app layout with scrollable panels.

geon / gist:e8b9e1125325e39c58b9

Created October 5, 2015 09:28

PipelineDB example

	Data:

	{"type":"add","uuid":"4b24edb2-5074-4a3a-95cb-927d5535da7c","topic":"clients","data":{"time":"2015-03-23T15:45:34.995Z"}}
	{"type":"add","uuid":"26ff7bdb-9913-47ab-a6df-8c985320c1bb","topic":"clients","data":{"time":"2015-03-23T15:45:36.082Z"}}
	{"type":"add","uuid":"914096b8-dc66-4239-bb1c-88baba0c1831","topic":"lines","data":{"time":"2015-03-23T15:45:40.323Z","clientId":"26ff7bdb-9913-47ab-a6df-8c985320c1bb","line":"Hello?"}}
	{"type":"add","uuid":"bdb60b1e-b34b-490e-a737-0ceb81208f4e","topic":"lines","data":{"time":"2015-03-23T15:45:44.935Z","clientId":"4b24edb2-5074-4a3a-95cb-927d5535da7c","line":"What?"}}
	{"type":"del","uuid":"4b24edb2-5074-4a3a-95cb-927d5535da7c","topic":"clients"}
	{"type":"add","uuid":"f9aacc7e-1745-4a54-8e54-b9bea3cbc3bb","topic":"clients","data":{"time":"2015-03-23T15:45:59.800Z"}}
	{"type":"add","uuid":"2c45cca3-cfa5-4ac2-bfec-12ca985d869b","topic":"lines","data":{"time":"2015-03-23T15:46:15.624Z","clientId":"f9aacc7e-1745-4a54-8e54-b9bea3cbc3bb","line":"Works finw"}}
	{"type":"ad

geon / demo.sh

Created October 1, 2015 06:09

Command line tool to extract values from a JSON file.

echo '{"foo1":123, "foo":{"bar":[1,2,3]}}' | ./json.js foo.bar.2

Victor Widell geon