| # -------------------------------------------------------------------------------------------- | |
| # Mostly Erlang - episode 019 Elixir With José Valim / October 7, 2013 | |
| # | |
| # guests: | |
| # - Joe Armstrong (@joeerl) | |
| # - Robert Virding (@rvirding) | |
| # - Jose Valim (@josevalim) | |
| # - Fred Hebert (@mononcqc) | |
| # - Eric Merit (@ericbmerritt) | |
| # |
| defmodule MarkdownConverter do | |
| import Phoenix.Component | |
| def convert(filepath, body, _attrs, opts) do | |
| convert_body(Path.extname(filepath), body, opts) | |
| end | |
| defp convert_body(extname, body, opts) when extname in [".md", ".markdown", ".livemd"] do | |
| html = | |
| Earmark.as_ast!(body, annotations: "%%") |
Problem: accidentally pressing 'Esc' when editing a form in a "standard" LiveView modal dialog will discard all edits.
Proposed solution: Make the modal show a confirmation window on close when there have been changes on the form.
LiveView v0.20 was used.
Table of content
| # Extract dominant colors from image | |
| ```elixir | |
| Mix.install([ | |
| {:kino, "~> 0.11.3"}, | |
| {:dominant_colors, "~> 0.1.4"} | |
| ]) | |
| ``` |
| defmodule SchemaChecker do | |
| def find_field_discrepancies do | |
| schema_modules() | |
| |> Enum.map(fn mod -> | |
| {mod.__schema__(:source), check_module(mod)} | |
| end) | |
| end | |
| defp schema_modules do | |
| {:ok, modules} = :application.get_key(:core, :modules) |
as does a huge number of things. Probably too many. Here's a comprehensive list of everything it can do.
Entries in italics are the names of functions that actually exist in the standard library, while all entries attempt to have a descriptive name for what a function that does the same thing as that particular as would do.
zero_extend: unsigned int -> bigger unsigned int. Pads the number with leading zeroes. This preserves the numeric value.sign_extend: signed int -> bigger signed int. Pads the number with leading zeroes if positive, and leading ones if negative. This preserves the numeric value.truncate: bigger int -> smaller int (regardless of signedness). Throws away the high bits of the number.reinterpret_sign: int -> int of the same size and opposite signedness. Does nothing to the bits.cast_saturate_to_infinity: Yields the float closest to the specified integer. Yields infinity if the integer is out of boun
| # Discussed in https://www.ericpfahl.com/from-pattern-matching-to-unification/ | |
| defmodule Var do | |
| alias Var | |
| @type t :: %Var{id: any} | |
| defstruct [:id] | |
| @spec new(any) :: Var.t() | |
| def new(id), do: %Var{id: id} |
| defmodule NestedWeb.FormLive do | |
| use NestedWeb, :live_view | |
| require Logger | |
| defmodule Form do | |
| use Ecto.Schema | |
| import Ecto.Changeset | |
| embedded_schema do | |
| field :name, :string |
