iamucil

go mod edit -module {NEW_MODULE_NAME}
-- rename all imported module
find . -type f -name '*.go' \
  -exec sed -i -e 's,{OLD_MODULE},{NEW_MODULE},g' {} \;

uarun

Increasing replication factor for a topic

1. Create a custom reassignment plan (see attached file inc-replication-factor.json). In this case we are going from replication factor of 1 to 3.

2. Run Kafka partition reassignment script:

   kafka-reassign-partitions --zookeeper $ZOOKEEPER_CONNECT \
       --reassignment-json-file /home/liquidnt/inc-replication-factor.json  \
       --execute
   

3. Verify if the assignment was successful

SKempin

Git Subtree Basics

If you hate git submodule, then you may want to give git subtree a try.

Background

When you want to use a subtree, you add the subtree to an existing repository where the subtree is a reference to another repository url and branch/tag. This add command adds all the code and files into the main repository locally; it's not just a reference to a remote repo.

When you stage and commit files for the main repo, it will add all of the remote files in the same operation. The subtree checkout will pull all the files in one pass, so there is no need to try and connect to another repo to get the portion of subtree files, because they were already included in the main repo.

Adding a subtree

Let's say you already have a git repository with at least one commit. You can add another repository into this respository like this:

un1t

package main

import (
	"fmt"
	"gopkg.in/olivere/elastic.v2"
	"strconv"
)

type Tweet struct {
	User    string `json:"user"`

nimasdj

<?php
// I made this array by joining all the following lists + .php extension which is missing in all of them. 
// please contribute to this list to make it as accurate and complete as possible.
// https://gist.github.com/plasticbrain/3887245
// http://pastie.org/5668002
// http://pastebin.com/iuTy6K6d
// total: 1223 extensions as of 16 November 2015
$mime_types = array(
'3dm' => array('x-world/x-3dmf'), 
'3dmf' => array('x-world/x-3dmf'), 

jcarmena

package main

import (
	"fmt"
	"math/rand"
	"time"
)

func boring(msg string) <-chan Message {
	c := make(chan Message)

ngauthier

// keepDoingSomething will keep trying to doSomething() until either
// we get a result from doSomething() or the timeout expires
func keepDoingSomething() (bool, error) {
	timeout := time.After(5 * time.Second)
	tick := time.Tick(500 * time.Millisecond)
	// Keep trying until we're timed out or got a result or got an error
	for {
		select {
		// Got a timeout! fail with a timeout error
		case <-timeout:

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

ungoldman

How do you POST a JSON file with curl??

You can post a json file with curl like so:

curl -X POST -H "Content-Type: application/json" -d @FILENAME DESTINATION

so for example:

marcinwyszynski

// Original idea:
// http://commandcenter.blogspot.nl/2014/01/self-referential-functions-and-design.html
package main

import "fmt"

type Cat struct {
	Name string
}