Burkhard Reffeling hardchor

## filterArraysRamda.md

      
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                cezarneaga
                / filterArraysRamda.md
            
            
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              April 26, 2023 07:52
            
              
                Filter array of objects by nested values using ramda: Sometimes you dont have access to backend and you want to filter the response from an endpoint based on certain criteria. While trivial on flat arrays, this gets a bit tricky if the property you want to query is deeply nested. This is where Ramda shines.
              
          
    Say we have a prop.users of the shape:
const users = [
    {username: 'bob', age: 30, tags: [{name: 'work', id: 1}, {name: 'boring', id: 2}]},
    {username: 'jim', age: 25, tags: [{name: 'home', id: 3}, {name: 'fun', id: 4}]},
    {username: 'jane', age: 30, tags: [{name: 'vacation', id: 5}, {name: 'fun', id: 4}]}
];


## Effective_Engineer.md

      
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                rondy
                / Effective_Engineer.md
            
            
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              May 4, 2024 08:19
            
          
    FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

Effective Engineer - Notes


By Edmond Lau
Highly Recommended 👍
http://www.theeffectiveengineer.com/

What's an Effective Engineer?


## RDS-Aurora-CloudFormation-Example.yaml
---
AWSTemplateFormatVersion: 2010-09-09

Description: >
  A basic CloudFormation template for an RDS Aurora cluster.

Parameters:
  DatabaseUsername:
    AllowedPattern: "[a-zA-Z0-9]+"
    ConstraintDescription: must be between 1 to 16 alphanumeric characters.

## migrate_postgresql_database.md

      
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                olivierlacan
                / migrate_postgresql_database.md
            
            
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              March 24, 2022 20:30
            
              
                How to migrate a Homebrew-installed PostgreSQL database to a new major version (9.3 to 9.4) on OS X. See upgraded version of this guide: http://olivierlacan.com/posts/migrating-homebrew-postgres-to-a-new-version/
              
          
    This guide assumes that you recently run brew upgrade postgresql and discovered to your dismay that you accidentally bumped from one major version to another: say 9.3.x to 9.4.x. Yes, that is a major version bump in PG land.
First let's check something.
brew info postgresql
The top of what gets printed as a result is the most important:

  
## boot.js
// This script will boot app.js with the number of workers
// specified in WORKER_COUNT.
//
// The master will respond to SIGHUP, which will trigger
// restarting all the workers and reloading the app.

var cluster = require('cluster');
var workerCount = process.env.WORKER_COUNT || 2;

// Defines what each worker needs to run

## README.md

      
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                coderanger
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              August 18, 2023 18:33
            
              
                How to patch Ubuntu for Heartbleed
              
          
    How to patch Ubuntu for Heartbleed


sudo apt-get update
sudo apt-get install -y libssl1.0.0 openssl
openssl version -a and confirm the "built on" date is >= 2014-04-07
sudo lsof -n | grep ssl | grep DEL and restart all listed services.

Repeat #4 until no results are returned.

  
## truncate_dynamodb.sh
#!/bin/bash

TABLE_NAME=$1

# Get id list
aws dynamodb scan --table-name $TABLE_NAME | grep ID | awk '{ print $2 }' > /tmp/truncate.list

# Delete from id list
cat /tmp/truncate.list | xargs -IID aws dynamodb delete-item --table-name $TABLE_NAME --key '{ "id": { "S": "ID" }}'

## config.yml

fos_js_routing:
    routes_to_expose:
        - "^api_.*" # expose all routes with a name starting with api_

## application.coffee
$ ->
  Event  = Backbone.Model.extend()

  Events = Backbone.Collection.extend({
           Model: Event,
           url  : 'events'
           })

  EventsView = Backbone.View.extend({
    initialize: ->
	---
	AWSTemplateFormatVersion: 2010-09-09

	Description: >
	A basic CloudFormation template for an RDS Aurora cluster.

	Parameters:
	DatabaseUsername:
	AllowedPattern: "[a-zA-Z0-9]+"
	ConstraintDescription: must be between 1 to 16 alphanumeric characters.
	// This script will boot app.js with the number of workers
	// specified in WORKER_COUNT.
	//
	// The master will respond to SIGHUP, which will trigger
	// restarting all the workers and reloading the app.

	var cluster = require('cluster');
	var workerCount = process.env.WORKER_COUNT \|\| 2;

	// Defines what each worker needs to run
	#!/bin/bash

	TABLE_NAME=$1

	# Get id list
	aws dynamodb scan --table-name $TABLE_NAME \| grep ID \| awk '{ print $2 }' > /tmp/truncate.list

	# Delete from id list
	cat /tmp/truncate.list \| xargs -IID aws dynamodb delete-item --table-name $TABLE_NAME --key '{ "id": { "S": "ID" }}'

	fos_js_routing:
	routes_to_expose:
	- "^api_.*" # expose all routes with a name starting with api_
	$ ->
	Event = Backbone.Model.extend()

	Events = Backbone.Collection.extend({
	Model: Event,
	url : 'events'
	})

	EventsView = Backbone.View.extend({
	initialize: ->