Elixir: Atoms

In development

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In development

The exercise doesn't pass checking. What to do? 😶

If you've reached a deadlock it's time to ask your question in the «Discussions». How ask a question correctly:

Be sure to attach the test output, without it it's almost impossible to figure out what went wrong, even if you show your code. It's complicated for developers to execute code in their heads, but having a mistake before their eyes most probably will be helpful.

In my environment the code works, but not here 🤨

Tests are designed so that they test the solution in different ways and against different data. Often the solution works with one kind of input data but doesn't work with others. Check the «Tests» tab to figure this out, you can find hints at the error output.

My code is different from the teacher's one 🤔

It's fine. 🙆 One task in programming can be solved in many different ways. If your code passed all tests, it complies with the task conditions.

In some rare cases, the solution may be adjusted to the tests, but this can be seen immediately.

I've read the lessons but nothing is clear 🙄

It's hard to make educational materials that will suit everyone. We do our best but there is always something to improve. If you see a material that is not clear to you, describe the problem in “Discussions”. It will be great if you'll write unclear points in the question form. Usually, we need a few days for corrections.

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Your exercise will be checked with these tests:

1defmodule Test do
2  use ExUnit.Case
3  import Solution
4
5  test "distance not changed" do
6    assert 5.0 == distance({:point, 0, 0}, {:point, 0, 5})
7    assert 5.0 == distance({:point, 5, 0}, {:point, 0, 0})
8    assert 0.0 == distance({:point, 5, 5}, {:point, 5, 5})
9    assert 5.0 == distance({:point, 0, 0}, {:point, 3, 4})
10    assert 5.0 == distance({:point, 0, 0}, {:point, -3, -4})
11  end
12
13  test "bigger distance not changed" do
14    assert 12.806248474865697 == distance({:point, 2, 2}, {:point, 10, 12})
15    assert 21.213203435596427 == distance({:point, -5, -5}, {:point, 10, 10})
16    assert 21.400934559032695 == distance({:point, -5, 5}, {:point, 8, -12})
17    assert 17.26267650163207 == distance({:point, -5, 5}, {:point, -8, -12})
18  end
19
20  test "point inside circle" do
21    point = {:point, 50, 50}
22    assert is_point_inside_circle(point, {:circle, {:point, 10, 10}, 100})
23    assert not is_point_inside_circle(point, {:circle, {:point, -10, -10}, 20})
24  end
25
26  test "point inside rect" do
27    point = {:point, -10, 20}
28    assert is_point_inside_rect(point, {:rect, {:point, -20, 30}, {:point, 20, 10}})
29    assert not is_point_inside_rect(point, {:rect, {:point, 0, 0}, {:point, 10, 10}})
30  end
31end
32

Teacher's solution will be available in:

20:00

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