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Tom Barrasso Tombarr

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Tombarr / enumeration.ex
Created January 19, 2019 23:06
Map & Reduce in Elixir
[1, 2, 3, 4, 5]
|> Enum.map(fn x -> x * x end)
|> Enum.reduce(fn x, s -> x + s end) # 55
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Tombarr / enumeration.js
Created January 19, 2019 23:06
Map & Reduce in Javascript
[1, 2, 3, 4, 5].map((x) => x * x).reduce((x, s) => x + s); // 55
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Tombarr / maps.ex
Created January 19, 2019 23:05
Maps in Elixir
map = %{
:red => "blue",
1 => 2,
true => false
}
map[true] # false
map[:red] # "blue"
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Tombarr / maps.js
Created January 19, 2019 23:04
Objects as maps in Javascript
let map = {
red: "blue",
1: 2,
true: false
};
map[true]; // false
map["red"]; // "blue"
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Tombarr / list_operators.ex
Created January 19, 2019 23:04
List operators in Elixir
[1, 2, 3] ++ [4, 5, 6] # [1, 2, 3, 4, 5, 6]
[1, 2, 3] -- [2] # [1, 3]
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Tombarr / increment.js
Created January 19, 2019 23:03
Increment/ decrement in Javascript
let n = 10;
n--; // same as n -= 1;
n++; // same as n += 1;
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Tombarr / pattern_matching_destructuring.ex
Created January 19, 2019 23:02
Destructuring using pattern matching in Elixir
[x, y, z] = [1, 2, 3]
{status, message} = {:error, "Unknown error"}
[first | everythingElse] = [1, 2, 3, 4, 5]
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Tombarr / destructuring.js
Created January 19, 2019 23:02
Destructuring in Javascript
let [x, y, z] = [1, 2, 3];
let {status, message} = {status: "OK", message: "Unknown error"};
let [first, ...everythingElse] = [1, 2, 3, 4, 5]
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Tombarr / assignment.ex
Created January 19, 2019 23:01
Example of simple assignment in Elixir
twenty_four = 24
not_true = false
API_KEY = 'abc123'
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Tombarr / variables.js
Created January 19, 2019 23:00
Example of variable assignment with var, let, and const
var twentyFour = 24;
let notTrue = false;
const API_KEY = 'abc123';