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Jay Liew jayliew

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jayliew / app_extras.py
Created October 2, 2012 19:06
Django template filter: Add zero-width space to break up long strings
from django.template.defaultfilters import stringfilter
from django.utils.safestring import mark_safe
from django import template
register = template.Library()
@register.filter
@stringfilter
def zerowidthspace_separator(value, num):
"""
@jayliew
jayliew / gist:3824822
Created October 3, 2012 03:28
jQuery example: Array of Deferreds and When / Then
var dfd_arr = []; // array of deferred objects
var get_dfd1 = function(){
var dfd1 = $.Deferred();
var req = $.ajax({
success: dfd1.resolve,
});
req.done(function(){ // dfd1 success callback
@jayliew
jayliew / gist:3868115
Created October 10, 2012 20:13
Erlang list of integers to string
L = [100, 120, 100].
lists:flatten([io_lib:format("~c", [V]) || V <- L]).
@jayliew
jayliew / exif_stripper.py
Last active September 30, 2016 22:42
Python script to remove geographic coordinates / latitude (lat) + longitude (long) EXIF data from JPG / JPEG photos / pictures / pics
#!/usr/bin/env python
#
# Purpose: This script strips out all the geo latitude + longitude data
# from JPG / JPEG files
#
# Installation: Make sure you have PIL (Python Imaging Library), or "Pillow"
#
# Usage: Put this file in directory with photos and run it from there
#
# e.g.
@jayliew
jayliew / runkeeper-healthgraph-api.py
Last active December 13, 2016 21:49
Cheatsheet to get data from Runkeeper's API using github.com/aouyar/healthgraph-api
# 1. install aouyar's healthgraph-api (via pip install or git clone. see his instructions)
# 2. signup on Runkeeper.com (as developer, not end user) as an RK app, to get client secret and key
# 3. fire up the self contained web server (bottle and beaker), installing dependencies as needed (about 1 or 2)
# 4. from previous step, you should get the user's access token
import healthgraph
access_token = "xxxxxxxxx" # enter your user access token here
session = healthgraph.Session(access_token)
@jayliew
jayliew / groupme_springhaus_bot.py
Last active March 23, 2017 18:21
groupme django python bot for springhaus
def groupme_springhaus_ops(request):
if settings.ENABLE_GROUPME_OPS == False:
return Http404
url = "https://api.groupme.com/v3/groups/" + settings.GROUPME_SPRINGHAUS_CORE_GROUP_ID_KEY + "/messages"
gmc = GroupMeControl.objects.all()[0]
last_seen_message_id = gmc.last_seen_id_str
print("starting ops. Last message id is: " + gmc.last_seen_id_str)
@jayliew
jayliew / parseCheatViewController.swift
Last active June 25, 2017 18:03
Parse server cheat sheet
//
// parseViewController.swift
// parseTest
//
// Created by Jay Liew on 6/23/17.
// Copyright © 2017 Jay Liew. All rights reserved.
//
/*
_____ __ _ __ ____ __
/\ '__`\ /'__`\ /\`'__\/',__\ /'__`\
@jayliew
jayliew / postgres.md
Last active December 4, 2025 02:17
postgres cheat / psql cheat

create user: CREATE ROLE username WITH LOGIN PASSWORD 'password';

show users: \du

create database: CREATE DATABASE databasename;

show databases:

@jayliew
jayliew / gist:880d2948d7e0382580e471b44f4bc34f
Created January 9, 2018 18:57
Ubuntu 16.04 systemd service starter script
[Unit]
Description=SSH Tunnel for MySQL
After=network.target
[Service]
Restart=always
RestartSec=20
User=unprivilegedusername
ExecStart=/usr/bin/ssh -NT -o ServerAliveInterval=60 -L 3306:127.0.0.1:3306 username@hostactuallyrunningmysqld
@jayliew
jayliew / barcode_scanner_raspbian.py
Created March 22, 2018 22:32
USB barcode scanner read in Python on Raspberry Pi Raspbian
# Props to user brechmos for sharing the code here: https://www.raspberrypi.org/forums/viewtopic.php?t=55100
# Tested with the following barcode scanner
# macbook# ioreg -p IOUSB
# <snip>
# | +-o WIT 122-UFS V2.03@14200000 <class AppleUSBDevice, id 0x10000c3c4, registered, matched, active, busy 0 (6 ms), retain 14>
# WIT 122-UFS V2.03:
# Product ID: 0x1010
# Vendor ID: 0x05fe (CHIC TECHNOLOGY CORP)