krisselden

// Monomorphic wrapper for polymorphic value
wrapper = {
 type,
 value
}

// CheckMap wrapper for .type lookup   monomorphic
if (wrapper.type === 1) {
  // CheckMap value for .somefield lookup monomorphic because in branch for one type
  wrapper.value.somefield

stevedomin

defmodule MyBlog.Repo.Migrations.CreatePost do
  use Ecto.Migration

  def change do
    create table(:posts, primary_key: false) do
      add :id, :uuid, primary_key: true
      add :body, :string
      add :word_count, :integer

      timestamps