Skip to content

Instantly share code, notes, and snippets.

View hktonylee's full-sized avatar

hktonylee

29 followers · 42 following
View GitHub Profile
@dmpetrov
dmpetrov / save_dataframe_in_single_csv.scala
Created March 6, 2017 05:07
Save Spark dataframe to a single CSV file
# Code for blogpost:
# https://fullstackml.com/2015/12/21/how-to-export-data-frame-from-apache-spark/
def saveDfToCsv(df: DataFrame, tsvOutput: String,
sep: String = ",", header: Boolean = false): Unit = {
val tmpParquetDir = "Posts.tmp.parquet"
df.repartition(1).write.
format("com.databricks.spark.csv").
option("header", header.toString).
@patpohler
patpohler / Big List of Real Estate APIs.md
Last active July 23, 2025 17:45
Evolving list of Real Estate APIs by Category

Big List of Real Estate APIs

Listings / Property Data

####Rets Rabbit http://www.retsrabbit.com

Rets Rabbit removes the nightmare of importing thousands of real estate listings and photos from RETS or ListHub and gives you an easy to use import and Web API server so you can focus on building your listing search powered website or app.

@kn9ts
kn9ts / aws4_signing.py
Last active July 3, 2025 04:14
AWS V4 signing example in python
# AWS Version 4 signing example
#
# Example:
# Authorization: AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20150830/us-east-1/iam/aws4_request, SignedHeaders=content-type;host;x-amz-date, Signature=5d672d79c15b13162d9279b0855cfba6789a8edb4c82c400e06b5924a6f2b5d7
# Formulae:
# CanonicalRequest =
# HTTPRequestMethod + '\n' +
# CanonicalURI + '\n' +
# CanonicalQueryString + '\n' +
@rondy
rondy / Effective_Engineer.md
Last active July 21, 2025 01:56

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

Effective Engineer - Notes

What's an Effective Engineer?

@emrahgunduz
emrahgunduz / PackageDownloader.cpp
Created November 14, 2016 12:55
Package Downloader And Mounter For Unreal Engine 4 -- Do not forget to correct the include and api name if you are copy pasting this code
#include "HitMe.h"
#include "PackageDownloader.h"
#include "IPlatformFilePak.h"
#include "HitMeSingleton.h"
UPackageDownloader* UPackageDownloader::GetPackageDownloader(FString PackageName, FString URL, bool& IsValid)
{
IsValid = false;
UPackageDownloader *Object = NewObject<UPackageDownloader>();
@harold-b
harold-b / dear imgui, selectable popup example
Created August 6, 2016 18:39
A functional selectable pseudo-popup window example using dear imgui, for use with autocomplete or input history.
const int ENTRY_COUNT = 10;
const char* ENTRIES[ENTRY_COUNT] =
{
"Entry 0",
"Entry 1",
"Entry 2",
"Entry 3",
"Entry 4",
"Entry 5",
@paulirish
paulirish / what-forces-layout.md
Last active July 21, 2025 17:36
What forces layout/reflow. The comprehensive list.

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.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics
  • elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
@dmansfield
dmansfield / http_client_spnego.js
Created August 7, 2015 13:27
Node.js HTTP client with kerberos/gssapi/negotiate/spnego authentication
//
// tested with kerberos 0.0.12 on linux against apache running mod_auth_kerb with Samba AD providing KDC
//
var Kerberos = require('kerberos').Kerberos;
var kerberos = new Kerberos();
var http = require('http');
function httpget(opts, callback) {
console.log('submitting to '+(opts.hostname||opts.host)+' with authorization header: '+(opts.headers||{}).authorization);
var req = http.get(opts, function(res) {
@sjmueller
sjmueller / BarcodeScanner.swift
Created June 22, 2015 01:10
Example of a custom react-native component, written in swift. Original author @euforic
// Barcode.swift
import UIKit;
import AVFoundation;
@objc(BarcodeScanner)
public class BarcodeScanner: UIView, AVCaptureMetadataOutputObjectsDelegate {
let session : AVCaptureSession = AVCaptureSession()
var previewLayer : AVCaptureVideoPreviewLayer!
@onlyurei
onlyurei / elevator-saga-balanced-solution
Last active August 5, 2021 21:17
Solution for Elevator Saga game (http://www.elevatorsaga.com)
{
init: function (elevators, floors) {
function queueDestinationForElevator(elevator, floorNum) {
if (elevator.destinationQueue.length) {
if (isElevatorGoingUp(elevator)) {
if (floorNum < elevator.destinationQueue[0]) {
if (elevator.currentFloor() < floorNum) {
elevator.destinationQueue.splice(0, 0, floorNum);
} else {