Faheetah

# Note: can also just install nerdctl-full

sudo apt-get update
sudo apt-get install containerd

wget https://github.com/containerd/nerdctl/releases/download/v1.5.0/nerdctl-1.5.0-linux-amd64.tar.gz
tar -zxf nerdctl-1.5.0-linux-amd64.tar.gz nerdctl
sudo mv nerdctl /usr/bin/nerdctl
rm nerdctl-1.5.0-linux-amd64.tar.gz

Faheetah

Make all the changes described in these files. Delete assets/css/phoenix.css as it is no longer used.

• config/dev.exs
• assets/package.json
• assets/postcss.config.js
• assets/tailwind.config.js
• assets/css/app.css
• mix.exs

Faheetah

# set a loop for running commands, will run unit tests on enter
while read; do go test ./...; done

# set a loop that runs once a second (like watch), can be used in cases watch doesn't fit as well
while sleep 1; do ls; done

# do something with the previous command
pwd
ls $(!!) # equivalent to ls $(pwd)

Faheetah

nothing:
  literally_nothing:

Faheetah

This is handy for cases such as needing to dynamically assign structs, for example when use with marshalling or when assigning the results of a SQL query into a struct, without duplicating code for each type. This is a naive implementation as it takes absolutely no error checking into account. It is not production safe and is meant to demonstrate how to iterate through and populate a struct.

Example usage

type Foo struct {
	Int        int
	String     string
	Unassigned string
}

Faheetah

defmodule StructParser do
  import NimbleParsec

  @space 0x0020
  @tab 0x009

  whitespace = utf8_char([@space, @tab, ?\n])

  ignore_whitespace =
    lookahead(whitespace)

Faheetah

defmodule Test.Parser do
  import NimbleParsec

  # iex(9)> Test.Parser.parse """
  # ...(9)>   FOO = 1   (some foo)
  # ...(9)>   BAR = 2 (some
  # ...(9)>            bar)
  # ...(9)>   FAZ = 3 (some faz)
  # ...(9)> """
  # {:ok, ["FOO", 1, "somefoo", "BAR", 2, "somebar", "FAZ", 3, "somefaz"], "\n",

Faheetah

Generate an App

Requires phx.new, install with mix archive.install hex phx_new

mix phx.new app

Common flags:

Faheetah

A problem with repositories is sometimes you do not remember what commands you ran to bootstrap the application, or what generators were used. A history file similar to .bash_history would be handy for a per-project basis. The h command above provides a wrapper around this functionality. It should be portable across any system with bash.

Run a command and write out the command to the git project's .history file, this logs $@ to .history

$ h mix phx.new project_name
$ h mix deps.get
$ h mix ecto.create
$ cat .history
mix phx.new project_name

Faheetah

defmodule FlagStars do
  def calculate() do
    Enum.reduce(1..25, [], fn first, acc ->
      acc ++ Enum.reduce(1..25, [], fn second, acc ->
        acc ++ Enum.reduce(1..10, [], fn rows, acc ->
          acc ++ cond do
            (rows * first) == 51 -> [{first, rows}]
            ((div(rows, 2) + rem(rows, 2)) * first) + (div(rows, 2) * second) == 51 -> [{first, second, rows}]
            true -> []
          end