philss

Benchmark Explorer.DataFrame.from_list/1

Deps

Mix.install([
  {:benchee, "~> 1.0.0"},
  {:explorer, github: "kimjoaoun/explorer", branch: "joao/from_list"}
])

philss

defmodule MyApp.MixProject do
  use Mix.Project

  def project do
    [
      app: :my_app,
      version: "0.1.0",
      elixir: "~> 1.5",
      elixirc_paths: elixirc_paths(Mix.env()),
      compilers: [:phoenix, :gettext] ++ Mix.compilers(),

philss

version: "3.3"
services:
  db:
    image: postgres:11.1-alpine
    ports:
      - "5432:5432"
  app:
    env_file: .env
    build:
      context: .

philss

Keybase proof

I hereby claim:

• I am philss on github.
• I am philipsampaio (https://keybase.io/philipsampaio) on keybase.
• I have a public key ASByGSyTmCs_HKfawo0mQWZRkfWev2PLt3frbOzz6j3DoAo

To claim this, I am signing this object:

philss

22:27:17.495 [error] GenServer Oban.Pruner terminating
** (Postgrex.Error) ERROR 42P01 (undefined_table) relation "oban_jobs" does not exist

query: DELETE FROM "oban_jobs" AS o0 USING (SELECT o0."id" AS "id", o0."state" AS "state", o0."queue" AS "queue", o0."worker" AS "worker", o0."args" AS "args", o0."errors" AS "errors", o0."attempt" AS "attempt", o0."max_attempts" AS "max_attempts", o0."attempted_at" AS "attempted_at", o0."completed_at" AS "completed_at", o0."inserted_at" AS "inserted_at", o0."scheduled_at" AS "scheduled_at" FROM "oban_jobs" AS o0 WHERE (o0."state" IN ('completed','discarded')) ORDER BY o0."id" DESC OFFSET $1) AS s1 WHERE (o0."id" = s1."id")
(ecto_sql) lib/ecto/adapters/sql.ex:618: Ecto.Adapters.SQL.raise_sql_call_error/1
(ecto_sql) lib/ecto/adapters/sql.ex:551: Ecto.Adapters.SQL.execute/5
(oban) lib/oban/pruner.ex:44: Oban.Pruner.handle_info/2
(stdlib) gen_server.erl:637: :gen_server.try_dispatch/4
(stdlib) gen_server.erl:388: :gen_server.loop/7
(stdlib) proc_lib.erl:249: :proc_lib.init

philss

FROM elixir:1.6.0-alpine

RUN mix local.hex --force \
  && mix local.rebar --force \
  && apk --no-cache --update add postgresql-client bash \
  && rm -rf /var/cache/apk/* \
  && mkdir /app

COPY . /app
WORKDIR /app

philss

version: "3.3"
services:
  db:
    image: postgres
    ports:
      - "5432"
  web:
    build:
      context: .
      dockerfile: Dockerfile

philss

SML Module System

There is a way to define a namespace in SML: define an "structure" that creates a module.

Example:

structure MyMath =
struct
val pi = 3.141529

philss

Mutual recursion

Every finete state machine that does not need to hold state can be represented by a mutual recursive pair (or more) of functions.

ML specific

You can implement mutual recursion using the built-in and keyword between functions. It is also possible to implement it using a higher order function (a function that receives another function).

philss

Ternjs with Neovim

• upgrade nvim (in my case, I have the master version):

$ brew tap neovim/neovim
$ brew reinstall --HEAD neovim

• check Python 2 and 3, if are installed:

$ which python2