Fabian Kochem vortec

Types

A type is a collection of possible values. An integer can have values 0, 1, 2, 3, etc.; a boolean can have values true and false. We can imagine any type we like: for example, a HighFive type that allows the values "hi" or 5, but nothing else. It's not a string and it's not an integer; it's its own, separate type.

Statically typed languages constrain variables' types: the programming language might know, for example, that x is an Integer. In that case, the programmer isn't allowed to say x = true; that would be an invalid program. The compiler will refuse to compile it, so we can't even run it.

	defmodule KVServer.Command do
	@doc ~S"""
	Parses a line into a command.

	## Examples

	iex> KVServer.Command.parse "CREATE shopping\r\n"
	{:ok, {:create, "shopping"}}

	iex> KVServer.Command.parse "CREATE shopping \r\n"

	defmodule KVServer.Command do
	@doc ~S"""
	Parses a line into a command.

	## Examples

	iex> KVServer.Command.parse "CREATE shopping\r\n"
	{:ok, {:create, "shopping"}}
	"""
	def parse(line) do

	defmodule Action do
	defmodule Configuration do
	end

	@callback description(Configuration) :: String
	@callback perform(Configuration, String) :: nil
	end

	defmodule Webhook do
	@behaviour Action

	defmodule KV.Bucket do
	@doc """
	Starts a new bucket.
	"""
	def start_link do
	Agent.start_link(fn -> %{} end)
	end

	@doc """
	Gets a value from the `bucket` by `key`.

	defmodule KV do
	def start_link do
	Task.start_link(fn -> loop(%{}) end)
	end

	defp loop(map) do
	receive do
	{:get, key, caller} ->
	send caller, Map.get(map, key)
	loop(map)

	defmodule Math do
	def zero_a?(0) do
	true
	end

	def zero_a?(_) do
	false
	end

	def zero_b?(x) do

	class EventDispatcher:
	def __init__(self, loop, input_handler, output_handler):
	self.loop = loop
	self.input_handler = input_handler
	self.output_handler = output_handler

	async def __call__(self, event):
	# Generic stuff (logging, benchmarking, ...)
	message = await self.input_handler(event)
	await self.output_handler(message)

	MATCH (root:RootObject), (u {name: 'Tom'})-[:HAS_PERMISSION]->(o),
	p = shortestPath((root)-[*]-(o)) WHERE (r IN rels(p) WHERE type(r) = 'CONTAINS')
	RETURN p

	(dx-rtu)[fkochem@FK2] code/didactix/rtu (git)-[signal]$ pip install --upgrade pip
	Traceback (most recent call last):
	File "/Users/fkochem/workspace/instances/dx-rtu/bin/pip", line 7, in <module>
	from pip import main
	File "/Users/fkochem/workspace/instances/dx-rtu/lib/python3.5/site-packages/pip/__init__.py", line 13, in <module>
	from pip.commands import commands, get_summaries, get_similar_commands
	File "/Users/fkochem/workspace/instances/dx-rtu/lib/python3.5/site-packages/pip/commands/__init__.py", line 6, in <module>
	from pip.commands.bundle import BundleCommand
	File "/Users/fkochem/workspace/instances/dx-rtu/lib/python3.5/site-packages/pip/commands/bundle.py", line 6, in <module>
	from pip.commands.install import InstallCommand