aesmail

# boolean values, use if
if expression, do: this(), else: that()

# non-boolean multi-value single expressions, use case
case expression do
  value1 -> one()
  value2 -> two()
  value3 -> three()
  _      -> anything_else()
end

aesmail

defmodule MyApp.Blog.Author do
  use Ecto.Schema
  import Ecto.Changeset
  
  schema "authors" do
    field :name, :string
    field :email, :string
    # ...
  end
  

aesmail

I have been struggling (unnecessarily) to make my NativeScript app work seamlessly with Phoenix Channels.

I'm sure this is not the perfect solution, but after trying a lot of other solutions and none of them worked, this one worked for me like a charm.

I'm using:

• macOS 10.12.6
• phoenix 1.3.0
• NativeScript 3.1.3

aesmail

defmodule MyModule do
  # this is valid sytax. However, you can't access x and my_function inside `def`
  x = 2
  my_function = fn (x) -> x * 2 end
  
  # this is valid syntax. It will replace @my_variable with 2 anywehre inside the module at compile time.
  @my_variable 2
  
  # the following line will not compile
  # because only the following values are supported here:

aesmail

# Scenario ONE
price = Decimal(33.000) # <-- passed in a number
factor = Decimal(0.3020)
price = price / factor
price = price * factor
price.quantize(Decimal("0.01"), rounding=ROUND_UP) # --> 33

# Scenario TWO
price = Decimal('33.000') # <-- passed in a string
factor = Decimal('0.3020')

aesmail

# controller
def create
  user = User.create(params[:user])
  respond_with(user, include: :extras)
end


# nginx conf
server {
    listen 80;

aesmail

// BackgroundLayer
-(id) init {
    self = [super init];
    if(self != nil) {
        CCSprite *backgroundImage;
        if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
            backgroundImage = [CCSprite spriteWithFile:@"background.png"];
        } else {
            backgroundImage = [CCSprite spriteWithFile:@"backgroundiPhone.png"];
        }

aesmail

class CreatePosts < ActiveRecord::Migration
  def change
    create_table :posts do |t|
      t.references :blog, :null => false
      t.datetime :post_date, :null => false
      t.string :url, :null => false
      t.string :author
      t.string :title, :null => false
      t.attachment :image, :null => false
      t.text :body

aesmail

# code in Blog model
##########################
feed.entries.each do |entry|
  puts "=== creating new post..."
  post = Post.new(:title => entry.title)
  post.blog_id = self.id
  puts "=== blog_id = #{post.blog_id}"
# code never reaches past Post.new line
# I have a datetime field (post_date)

aesmail

<% content_for(:calendar) do %>
    <%= render 'calendar' %>
<% end %>

------------

<% content_for(:calendar) { render :partial => 'calendar' } %>

------------