diff options
Diffstat (limited to 'elixir.html.markdown')
| -rw-r--r-- | elixir.html.markdown | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/elixir.html.markdown b/elixir.html.markdown index 63b7aef2..8b80c582 100644 --- a/elixir.html.markdown +++ b/elixir.html.markdown @@ -1,9 +1,10 @@ --- language: elixir contributors: - - ["Joao Marques", "http://github.com/mrshankly"] + - ["Joao Marques", "https://github.com/mrshankly"] - ["Dzianis Dashkevich", "https://github.com/dskecse"] - ["Ryan Plant", "https://github.com/ryanplant-au"] + - ["Ev Bogdanov", "https://github.com/evbogdanov"] filename: learnelixir.ex --- @@ -127,7 +128,8 @@ rem(10, 3) #=> 1 # These operators expect a boolean as their first argument. true and true #=> true false or true #=> true -# 1 and true #=> ** (ArgumentError) argument error +# 1 and true +#=> ** (BadBooleanError) expected a boolean on left-side of "and", got: 1 # Elixir also provides `||`, `&&` and `!` which accept arguments of any type. # All values except `false` and `nil` will evaluate to true. @@ -285,7 +287,11 @@ end PrivateMath.sum(1, 2) #=> 3 # PrivateMath.do_sum(1, 2) #=> ** (UndefinedFunctionError) -# Function declarations also support guards and multiple clauses: +# Function declarations also support guards and multiple clauses. +# When a function with multiple clauses is called, the first function +# that satisfies the clause will be invoked. +# Example: invoking area({:circle, 3}) will call the second area +# function defined below, not the first: defmodule Geometry do def area({:rectangle, w, h}) do w * h @@ -433,11 +439,11 @@ self() #=> #PID<0.27.0> # Create an agent with `Agent.start_link`, passing in a function # The initial state of the agent will be whatever that function returns -{ok, my_agent} = Agent.start_link(fn -> ["red, green"] end) +{:ok, my_agent} = Agent.start_link(fn -> ["red", "green"] end) # `Agent.get` takes an agent name and a `fn` that gets passed the current state # Whatever that `fn` returns is what you'll get back -Agent.get(my_agent, fn colors -> colors end) #=> ["red, "green"] +Agent.get(my_agent, fn colors -> colors end) #=> ["red", "green"] # Update the agent's state the same way Agent.update(my_agent, fn colors -> ["blue" | colors] end) @@ -445,9 +451,10 @@ Agent.update(my_agent, fn colors -> ["blue" | colors] end) ## References -* [Getting started guide](http://elixir-lang.org/getting-started/introduction.html) from the [Elixir website](http://elixir-lang.org) -* [Elixir Documentation](http://elixir-lang.org/docs/master/) +* [Getting started guide](https://elixir-lang.org/getting-started/introduction.html) from the [Elixir website](https://elixir-lang.org) +* [Elixir Documentation](https://elixir-lang.org/docs.html) * ["Programming Elixir"](https://pragprog.com/book/elixir/programming-elixir) by Dave Thomas -* [Elixir Cheat Sheet](http://media.pragprog.com/titles/elixir/ElixirCheat.pdf) -* ["Learn You Some Erlang for Great Good!"](http://learnyousomeerlang.com/) by Fred Hebert +* [Elixir Cheat Sheet](https://media.pragprog.com/titles/elixir/ElixirCheat.pdf) +* ["Learn You Some Erlang for Great Good!"](https://learnyousomeerlang.com/) by Fred Hebert * ["Programming Erlang: Software for a Concurrent World"](https://pragprog.com/book/jaerlang2/programming-erlang) by Joe Armstrong +* [Introduction to Elixir](https://learn-elixir.com/) |