ilopmar

Keybase proof

I hereby claim:

• I am ilopmar on github.
• I am ilopmar (https://keybase.io/ilopmar) on keybase.
• I have a public key ASD5nf1nCSWIZcqJEYFWOu-lYbIql4gjQcahbrFDlCUz8wo

To claim this, I am signing this object:

ilopmar

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.

---

ilopmar

Below are the Big O performance of common functions of different Java Collections.


List                 | Add  | Remove | Get  | Contains | Next | Data Structure
---------------------|------|--------|------|----------|------|---------------
ArrayList            | O(1) |  O(n)  | O(1) |   O(n)   | O(1) | Array
LinkedList           | O(1) |  O(1)  | O(n) |   O(n)   | O(1) | Linked List
CopyOnWriteArrayList | O(n) |  O(n)  | O(1) |   O(n)   | O(1) | Array

ilopmar

[ExifTool]      ExifToolVersion                 : 10.80
[File:System]   FileName                        : DSC08743.JPG
[File:System]   Directory                       : .
[File:System]   FileSize                        : 8.6 MB
[File:System]   FileModifyDate                  : 2019:05:25 11:39:25+02:00
[File:System]   FileAccessDate                  : 2019:06:03 00:32:58+02:00
[File:System]   FileInodeChangeDate             : 2019:06:03 00:25:59+02:00
[File:System]   FilePermissions                 : rw-r--r--
[File]          FileType                        : JPEG
[File]          FileTypeExtension               : jpg

ilopmar

Greach 2019 awesome list

What is this?

A compilation of all the links to slides and repositories used in workshops or shown by the speakers.

Why

It can be difficult to retrieve all that material on twitter after the conference.

Contents

ilopmar

// http://mybatis.googlecode.com/svn/trunk/src/test/java/org/apache/ibatis/submitted/sptests/SPTest.java

Class.forName("org.hsqldb.jdbcDriver");
conn = DriverManager.getConnection("jdbc:hsqldb:mem:sptest", "sa", "");

Reader reader = Resources.getResourceAsReader("org/apache/ibatis/submitted/sptests/CreateDB.sql");

ScriptRunner runner = new ScriptRunner(conn);
runner.setDelimiter("]");
runner.setLogWriter(null);

ilopmar

#!/bin/bash
gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/ebook -dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf input.pdf 

ilopmar

04fc849bffb84762d5f716ca2f662c36c051a6ec908c46cd3f3cc4cac23d50e19c56b76dc2011b61b28a535b44b7e0bdd896531fe624d399cc7fe94af68084187e

ilopmar

External configuration in Grails 3

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Working on Grails 3 I realized that I no longer can specify external configuration using the standard grails.config.locations property in Config.groovy file.

Reason is obvious! There is no Config.groovy now in Grails 3. Instead we now use application.yml to configure the properties. However, you can't specify the external configuration using this file too!

What the hack?

Now Grails 3 uses Spring's property source concept. To enable external config file to work we need to do something extra now.

ilopmar

import org.jooq.util.jaxb.*
import org.jooq.util.*

ext.db = [
    url: 'jdbc:postgresql://host/db',
    user: 'user',
    password: 'user',
    schema: 'schema'
]