lenards

    Greybeard
     
    An aging [unix hacker] type with an impressive [unix beard] that has now turned grey. Originally a young [neckbeard], these [Gandalf] resembling [curmudgeons] are renowned for their knowledge of theoretical computer science, arcane unix and complete inability to use a remotely contemporary computer.
     
    Typically employed in academia, they are a dying breed from an antediluvian age of 8" [floppies], magnetic tape and timeshared computing. Despite having invented multiuser OSes and the internet, Greybeards prefer to live in the past, where they consider [Fortran] to be a high level programming language. Typical Greybeard computers are dated [Sun workstations] or old PCs running a command line only [BSD] variant, Greybeards shun GUIs, unless they're horrible and dated, like CDE or [Amiga] Workbench.
     
    Some, like Edsger Dijkstra do most of their computer science as entirely theoretical exercises on paper and haven't programmed a computer since 1972.
     
    Contacting a gr

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/* Styles for hiding the native checkbox */
input[type='checkbox'].check-custom {
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  opacity: 0;
  filter: alpha(opacity=0);
  position: absolute;
  visibility: hidden;

lenards

Just Enough Scala

(a moderately, well, shameless rework of Holden Karau's "Scala - Crash Course")

Scala is a multi-paradigm high-level language for the JVM.

It offers the ability to use both Object-oriented & Functional approaches.

Scala is statically typed. Type inference eliminates the need for more explicit type declarations.

lenards

Refactoring maybe code in Elm

Given this ugly series of cases:

optionalFormattedFriendAddress : Maybe Friend -> Maybe String
optionalFormattedFriendAddress maybeFriend =
  let
    maybeAddress = case maybeFriend of
      Just friend -> Just friend.address

lenards

This shows you that you can configure the memory for a daemon, but doesn't show jobtracker:

http://docs.aws.amazon.com/ElasticMapReduce/latest/DeveloperGuide/MemoryTuning.html

how to configure the jobtracker: 

https://github.com/commoncrawl/commoncrawl-crawler/blob/master/bin/launch_emr_parse_job.py#L80


Default Memory setups by EC2 instance type: 

lenards

Just Enough Elm

Elm is a functional programming language that compiles to JavaScript. You can build websites and web applications using it. You can reliably refactor them as the needs and features grow and/or change. It has a goal is simplicity, and it is not just for beginniners.

In short...

• Reliable refactoring
• Friendly error messages
• Enforced semantic versioning (in libraries)
• No runtime errors (in practice)

lenards

# A silly attempt as testing ... 

## Verification Environment

```
git clone https://gist.github.com/501e788da736ed42d10cdc42c8f4353e.git clank-pr-test
vagrant up
```

```

lenards

Installing (localdb) on Windows 10

Why? "Sql Local", aka LocalDB is used by the Azure Storage Emulator to mimic the storage interfaces for Azure.

For some reason, installing Sql Server 2017 Developer edition does not offer in "Feature Selection" the ability to include (or add) SqlLocalDB (e.g. LocalDB, or (localdb)).

What to do?

Get the Installer & Install

lenards

module ID exposing (ID(..), decodeFromString, decoder, encode, encodeAsString, fromInt, toInt, toString)

import Json.Decode as Decode exposing (Decoder)
import Json.Encode as Encode exposing (Value)


{-| This type ensures you get a type error if you for example accidentally pass a UserId in place of a CompanyId
-}
type ID phantom
    = ID Int

lenards

module Main exposing (main)

import Browser
import Html exposing (Html, button, div, option, select, text)
import Html.Attributes exposing (selected, value)
import Html.Events exposing (onClick, onInput)


type alias Model =
    { selected : Maybe OptionX }