Wolfgang Werner wwerner

Prepare

Visual Studio code

These are generic npm scripts that you can copy & paste into your package.json file as-is and get access to convinience scripts to manage your Docker images all in one place.

How to Use

npm i -g mrm-task-npm-docker
npx mrm npm-docker

Contribute

Here's the code repository https://github.com/expertly-simple/mrm-task-npm-docker

Commit Message Guidelines

Short (72 chars or less) summary

More detailed explanatory text. Wrap it to 72 characters. The blank
line separating the summary from the body is critical (unless you omit
the body entirely).

Write your commit message in the imperative: "Fix bug" and not "Fixed
bug" or "Fixes bug." This convention matches up with commit messages

Anatomy of Spring Boot Start Up Timing

When a Spring Boot app starts up with default (INFO) logging, there are some noticeable gaps (pauses). It's worth focusing on the gaps when looking for efficiency savings because of the amount of time they take, and because no-one bothered to log anything, so the chances are the app is doing something repetitive. We can tweak the logging levels to try and fill in the gaps and find out what is going on in there.

Basic empty web app with actuators has three such gaps:

0                                                                        1410ms
|------|---------------------------|-----|------|---------|--------|--------|
       |           578             |     |144(5)|         | 133(6) |

GitHub Flavored Asciidoc (GFA)

Applied Functional Programming with Scala - Notes

1. Mastering Functions

A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.

val square : Int => Int = x => x * x

Setup

Add this to your .profile, .bashrc, .zshrc...

decode_base64_url() {
  local len=$((${#1} % 4))
  local result="$1"
  if [ $len -eq 2 ]; then result="$1"'=='
  elif [ $len -eq 3 ]; then result="$1"'=' 
  fi
 echo "$result" | tr '_-' '/+' | openssl enc -d -base64

	[Unit]
	Description=IPFS daemon
	After=network.target

	[Service]
	### Uncomment the following line for custom ipfs datastore location
	# Environment=IPFS_PATH=/path/to/your/ipfs/datastore
	ExecStart=/usr/local/bin/ipfs daemon
	Restart=on-failure

	#!/usr/bin/env bash

	#
	# getopts_long -- POSIX shell getopts with GNU-style long option support
	#
	# Copyright 2005-2009 Stephane Chazelas <[email protected]>
	#
	# Permission to use, copy, modify, distribute, and sell this software and
	# its documentation for any purpose is hereby granted without fee, provided
	# that the above copyright notice appear in all copies and that both that

	'''This script goes along the blog post
	"Building powerful image classification models using very little data"
	from blog.keras.io.
	It uses data that can be downloaded at:
	https://www.kaggle.com/c/dogs-vs-cats/data
	In our setup, we:
	- created a data/ folder
	- created train/ and validation/ subfolders inside data/
	- created cats/ and dogs/ subfolders inside train/ and validation/
	- put the cat pictures index 0-999 in data/train/cats