prologic

Learn Go in ~5mins

This is inspired by A half-hour to learn Rust and Zig in 30 minutes.

Basics

Your first Go program as a classical "Hello World" is pretty simple:

First we create a workspace for our project:

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

ryanflorence

Folder Structure

Please note

While this gist has been shared and followed for years, I regret not giving more background. It was originally a gist for the engineering org I was in, not a "general suggestion" for any React app.

Typically I avoid folders altogether. Heck, I even avoid new files. If I can build an app with one 2000 line file I will. New files and folders are a pain.

danesparza

package main

import (
	"fmt"
	"github.com/codegangsta/negroni"
	"github.com/gorilla/mux"
	"log"
	"net/http"
)

ceteri

# using four part files to construct "minitweet"
cat rawtweets/part-0000[1-3] > minitweets

# change log4j properties to WARN to reduce noise during demo
mv conf/log4j.properties.template conf/log4j.properties
vim conf/log4j.properties # Change to WARN

# launch Spark shell REPL
./bin/spark-shell

soheilhy

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

jmasonherr

# coding: utf-8
import json
import stripe
import datetime

# Required for OAuth flow
from rauth import OAuth2Service

# Our secret key from stripe
STRIPE_SECRET_KEY = 'sk_test_xxxxxxxxxxxxx'

foreverdeepak

package com.esoftdive.core.smpp.internal;

import java.util.Random;

import com.cloudhopper.commons.charset.CharsetUtil;
import com.cloudhopper.smpp.SmppConstants;
import com.cloudhopper.smpp.SmppSession;
import com.cloudhopper.smpp.pdu.SubmitSm;
import com.cloudhopper.smpp.type.Address;

epicserve

#!/usr/bin/env bash

# This script prints out all of your Redis keys and their size in a human readable format
# Copyright 2013 Brent O'Connor
# License: http://www.apache.org/licenses/LICENSE-2.0

human_size() {
        awk -v sum="$1" ' BEGIN {hum[1024^3]="Gb"; hum[1024^2]="Mb"; hum[1024]="Kb"; for (x=1024^3; x>=1024; x/=1024) { if (sum>=x) { printf "%.2f %s\n",sum/x,hum[x]; break; } } if (sum<1024) print "1kb"; } '
}

drewolson

package main

import (
	"fmt"
	"reflect"
)

type Foo struct {
	FirstName string `tag_name:"tag 1"`
	LastName  string `tag_name:"tag 2"`