最近在exercism.io练习，那个难度稍微大一些，大概要一个月吧，适合于做第二阶段提高的练习。

今天发现一个新的不错的，一天就能熟悉Elixir的一些基础，一共18关。

第一关

比如，第一个简单地判断相等：

defmodule Equalities do  use Koans  @intro  """  Welcome to the Elixir koans.  Let these be your first humble steps towards learning a new language.  The path laid in front of you is one of many.  """  # Replace ___ with the answer to make the koan pass.  koan "We shall contemplate truth by testing reality, via equality" do    assert true == ___  end  koan "Not something is the opposite of it" do    assert !true == ___  end  koan "To understand reality, we must compare our expectations against reality" do    assert 2 == 1 + ___  end  koan "Some things may appear different, but be the same" do    assert 1 == 2 / ___  end  koan "Unless they actually are different" do    assert 3.2 != ___  end  koan "Some may be looking for bigger things" do    assert ___ > 3  end  koan "Others are happy with less" do    assert ___ < 3  endend

所有的题目

01_equalities.ex       07_lists.ex            13_functions.ex02_strings.ex          08_keyword_lists.ex    14_enums.ex03_sigils.ex           09_maps.ex             15_processes.ex04_numbers.ex          10_map_sets.ex         16_tasks.ex05_atoms.ex            11_structs.ex          17_agents.ex06_tuples.ex           12_pattern_matching.ex 18_protocols.ex

后面4个稍微陌生和难一点。

运行方式

mix deps.getmix meditate

不断练习

可以反复练习直到这些成为直觉。

项目学习

这个Koans本身是个不错的学习项目，可以通过它学习到一个完整的项目是如何建构的。