Rollable Expressions

Mix.install([
  {:kino, github: "livebook-dev/kino", override: true},
  {:kino_lab, "~> 0.1.0-dev", github: "jonatanklosko/kino_lab"},
  {:vega_lite, "~> 0.1.4"},
  {:kino_vega_lite, "~> 0.1.1"},
  {:benchee, "~> 0.1"},
  {:ecto, "~> 3.7"},
  {:math, "~> 0.7.0"},
  {:faker, "~> 0.17.0"},
  {:utils, path: "#{__DIR__}/../utils"},
  {:tested_cell, git: "https://github.com/BrooklinJazz/tested_cell"}
])

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Rollable Expressions

Many games such as Dungeons & Dragons require rolling dice to determine the effects of player actions. You will build a program which makes it easier for players to automatically roll dice online.

Dice expressions are in the form 1d6 which means roll one six-sided die.

Provided a text with a dice expression, replace the expression with a clickable link.

In markdown, a clickable link is in the format [link name](url).

Google allows you to roll multi sided dice by searching roll 1d6. The url for this is https://www.google.com/search?q=roll+1d6.

Example

> Fireball: deal 8d6 fire damage.

Becomes

> Fireball: deal 8d6 fire damage.

Replace any rollable expressions like so:

RollableExpression.clickable("8d6")
"[8d6](https://www.google.com/search?q=roll+8d6)"

Ensure you handle 4, 6, 8, 12, and 20 sided dice and be able to roll between 1 and 99 dice.

For example,

Rollable.replace("Fireball: deal 8d6 fire damage.")
"Fireball: deal [8d6](https://www.google.com/search?q=roll+8d6) fire damage."

Rollable.replace("Ice Shard: deal 12d4 ice damage.")
"Ice Shard: deal [12d4](https://www.google.com/search?q=roll+12d4) ice damage."

Rollable.replace("99d20")
"[99d20](https://www.google.com/search?q=roll+99d20)"

Rollable.replace("1d4")
"[1d4](https://www.google.com/search?q=roll+1d4)"

Enter your solution below.

defmodule Rollable do
  def replace(string) do
  end
end

Utils.feedback(:rollable_expressions, Rollable)

Commit Your Progress

Run the following in your command line from the project folder to track and save your progress in a Git commit.

$ git add .
$ git commit -m "finish rollable expressions exercise"