From c2ce60beccfa85d35182ca22c45350b54644d914 Mon Sep 17 00:00:00 2001
From: Eksperimental <eksperimental@users.noreply.github.com>
Date: Sun, 14 May 2017 15:16:13 -0500
Subject: [PATCH] Remove use of single vars in pattern matching (#1076)

* Replace [h|t] with [head | tail] in Collections

* Remove use of single letter variables and add space around cons operator
---
 bg/lessons/basics/collections.md   | 6 +++---
 bg/lessons/basics/functions.md     | 2 +-
 bn/lessons/basics/collections.md   | 6 +++---
 bn/lessons/basics/functions.md     | 2 +-
 cn/lessons/basics/collections.md   | 6 +++---
 cn/lessons/basics/functions.md     | 2 +-
 de/lessons/basics/collections.md   | 6 +++---
 de/lessons/basics/functions.md     | 2 +-
 es/lessons/basics/collections.md   | 6 +++---
 es/lessons/basics/functions.md     | 2 +-
 fr/lessons/basics/collections.md   | 6 +++---
 fr/lessons/basics/functions.md     | 2 +-
 gr/lessons/basics/collections.md   | 6 +++---
 gr/lessons/basics/functions.md     | 2 +-
 id/lessons/basics/collections.md   | 6 +++---
 id/lessons/basics/functions.md     | 2 +-
 it/lessons/basics/collections.md   | 6 +++---
 it/lessons/basics/functions.md     | 2 +-
 jp/lessons/basics/collections.md   | 6 +++---
 jp/lessons/basics/functions.md     | 2 +-
 ko/lessons/basics/collections.md   | 6 +++---
 ko/lessons/basics/functions.md     | 2 +-
 lessons/basics/collections.md      | 6 +++---
 lessons/basics/functions.md        | 2 +-
 lessons/basics/pattern-matching.md | 2 +-
 my/lessons/basics/collections.md   | 6 +++---
 my/lessons/basics/functions.md     | 2 +-
 no/lessons/basics/collections.md   | 6 +++---
 pl/lessons/basics/collections.md   | 6 +++---
 pl/lessons/basics/functions.md     | 2 +-
 pt/lessons/basics/collections.md   | 6 +++---
 pt/lessons/basics/functions.md     | 2 +-
 ru/lessons/basics/collections.md   | 6 +++---
 ru/lessons/basics/functions.md     | 2 +-
 sk/lessons/basics/collections.md   | 6 +++---
 sk/lessons/basics/functions.md     | 2 +-
 vi/lessons/basics/collections.md   | 6 +++---
 vi/lessons/basics/functions.md     | 2 +-
 38 files changed, 76 insertions(+), 76 deletions(-)

diff --git a/bg/lessons/basics/collections.md b/bg/lessons/basics/collections.md
index b98f66233e..3cf0b61d9b 100644
--- a/bg/lessons/basics/collections.md
+++ b/bg/lessons/basics/collections.md
@@ -76,11 +76,11 @@ iex> tl [3.14, :pie, "Apple"]
 В допълнение към гореспоменатите функции, може да ползвате [pattern matching](../pattern-matching/) и оператора `|` за да разделите списъка на глава и опашка; ще разгледаме този подход в дълбочина в следващи уроци:
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/bg/lessons/basics/functions.md b/bg/lessons/basics/functions.md
index 3f580fa97d..3c5627d94e 100644
--- a/bg/lessons/basics/functions.md
+++ b/bg/lessons/basics/functions.md
@@ -85,7 +85,7 @@ end
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []
diff --git a/bn/lessons/basics/collections.md b/bn/lessons/basics/collections.md
index 6d621ae30e..8679401e3f 100644
--- a/bn/lessons/basics/collections.md
+++ b/bn/lessons/basics/collections.md
@@ -75,11 +75,11 @@ iex> tl [3.14, :pie, "Apple"]
 এছাড়াও আমরা [pattern matching](../pattern-matching/) এবং কন্স অপারেটর  `|` দিয়েও একটি লিস্টকে দুই ভাগে ভাগ করতে পারি যা সম্পর্কে পরে আলোচনা হবে। 
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/bn/lessons/basics/functions.md b/bn/lessons/basics/functions.md
index e8307c6d9c..704f419082 100644
--- a/bn/lessons/basics/functions.md
+++ b/bn/lessons/basics/functions.md
@@ -85,7 +85,7 @@ end
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []
diff --git a/cn/lessons/basics/collections.md b/cn/lessons/basics/collections.md
index 14c2289132..a32e345b6e 100644
--- a/cn/lessons/basics/collections.md
+++ b/cn/lessons/basics/collections.md
@@ -75,11 +75,11 @@ iex> tl [3.14, :pie, "Apple"]
 除了上面的提到的函数，你还可以使用[模式匹配(pattern matching)](../pattern-matching/) 和 `|` 操作符来把一个列表分成头尾两部分；我们在后面的教程中还会看到这种用法。
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/cn/lessons/basics/functions.md b/cn/lessons/basics/functions.md
index a1d9f809e1..0588d7b6ca 100644
--- a/cn/lessons/basics/functions.md
+++ b/cn/lessons/basics/functions.md
@@ -85,7 +85,7 @@ end
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []
diff --git a/de/lessons/basics/collections.md b/de/lessons/basics/collections.md
index 71b2c5e18b..3a2857aae3 100644
--- a/de/lessons/basics/collections.md
+++ b/de/lessons/basics/collections.md
@@ -75,11 +75,11 @@ iex> tl [3.14, :pie, "Apple"]
 Zusätzlich zu den bereits erwähnten Funktionen kannst du [Pattern Matching](../pattern-matching/) und den Cons-Operator `|` dazu benutzen eine Liste in `head` und `tail` zu teilen; wir werden in späteren Kapiteln mehr über dieses Pattern lernen:
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/de/lessons/basics/functions.md b/de/lessons/basics/functions.md
index c5c2e6b41d..134097005b 100644
--- a/de/lessons/basics/functions.md
+++ b/de/lessons/basics/functions.md
@@ -85,7 +85,7 @@ Mit unserem Wissen über pattern matching bewaffnet, lass uns mit Hilfe von bena
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []
diff --git a/es/lessons/basics/collections.md b/es/lessons/basics/collections.md
index c037f4f509..d247e123a9 100644
--- a/es/lessons/basics/collections.md
+++ b/es/lessons/basics/collections.md
@@ -71,11 +71,11 @@ iex> tl [3.14, :pie, "Apple"]
 Además de la funciones citadas, puedes usar el operador tubería `|`; veremos este patrón en futuras lecciones:
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/es/lessons/basics/functions.md b/es/lessons/basics/functions.md
index edee076a81..9a894bed4e 100644
--- a/es/lessons/basics/functions.md
+++ b/es/lessons/basics/functions.md
@@ -85,7 +85,7 @@ Armados con nuestro conocimiento de coincidencia de patrones, vamos a explorar l
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []
diff --git a/fr/lessons/basics/collections.md b/fr/lessons/basics/collections.md
index 8b4e08213d..49b0d4f07b 100644
--- a/fr/lessons/basics/collections.md
+++ b/fr/lessons/basics/collections.md
@@ -64,11 +64,11 @@ iex> tl [3.14, :pie, "Apple"]
 En plus des fonctions ci-dessus, vous pouvez utiliser un pipe `|` pour déstructurer une liste. Nous verrons cet idiome dans les leçons suivantes:
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/fr/lessons/basics/functions.md b/fr/lessons/basics/functions.md
index 1e1c434c07..984554d3fc 100644
--- a/fr/lessons/basics/functions.md
+++ b/fr/lessons/basics/functions.md
@@ -89,7 +89,7 @@ Armés de notre connaissance du pattern matching, explorons maintenant la récur
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []
diff --git a/gr/lessons/basics/collections.md b/gr/lessons/basics/collections.md
index 9105b5e1db..cf0c8ed33a 100644
--- a/gr/lessons/basics/collections.md
+++ b/gr/lessons/basics/collections.md
@@ -75,11 +75,11 @@ iex> tl [3.41, :pie, "Apple"]
 Επιπρόσθετα στις προαναφερθείσες συναρτήσεις, μπορείτε να χρησιμοποιήσετε [αντιπαραβολές προτύπων](../pattern-matching/) και τον τελεστή σωλήνα `|` για να χωρίσετε μια λίστα στην κεφαλή και την ουρά.  Θα μάθουμε περισσότερα για αυτό το πρότυπο σε μεταγενέστερα μαθήματα:
 
 ```elixir
-iex> [h|t] = [3.41, :pie, "Apple"]
+iex> [head | tail] = [3.41, :pie, "Apple"]
 [3.41, :pie, "Apple"]
-iex> h
+iex> head
 3.41
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/gr/lessons/basics/functions.md b/gr/lessons/basics/functions.md
index d5e9422fc8..47fb59eb0f 100644
--- a/gr/lessons/basics/functions.md
+++ b/gr/lessons/basics/functions.md
@@ -85,7 +85,7 @@ end
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []
diff --git a/id/lessons/basics/collections.md b/id/lessons/basics/collections.md
index 92c509a206..58cce971ee 100644
--- a/id/lessons/basics/collections.md
+++ b/id/lessons/basics/collections.md
@@ -66,11 +66,11 @@ iex> tl [3.14, :pie, "Apple"]
 Di samping kedua fungsi tersebut, anda juga bisa menggunakan operator `|`; kita akan melihat pola ini di pelajaran-pelajaran selanjutnya:
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/id/lessons/basics/functions.md b/id/lessons/basics/functions.md
index e87ccd2651..99f5174a37 100644
--- a/id/lessons/basics/functions.md
+++ b/id/lessons/basics/functions.md
@@ -85,7 +85,7 @@ Dilengkapi dengan pengetahuan kita tentang pencocokan pola, mari kita eksplorasi
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []
diff --git a/it/lessons/basics/collections.md b/it/lessons/basics/collections.md
index 7f0c4999e8..018d2f50e8 100644
--- a/it/lessons/basics/collections.md
+++ b/it/lessons/basics/collections.md
@@ -66,11 +66,11 @@ iex> tl [3.14, :pie, "Apple"]
 Oltre alle funzioni menzionate in precedenza, puoi usare l'operatore _pipe_ `|`; vedremo questo operatore nelle lezioni successive:
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/it/lessons/basics/functions.md b/it/lessons/basics/functions.md
index 387dbcaee4..02e75fa20e 100644
--- a/it/lessons/basics/functions.md
+++ b/it/lessons/basics/functions.md
@@ -85,7 +85,7 @@ Dotati delle nozioni sul pattern matching, proviamo ad esplorare la ricorsione u
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []
diff --git a/jp/lessons/basics/collections.md b/jp/lessons/basics/collections.md
index e0012281c5..983359358e 100644
--- a/jp/lessons/basics/collections.md
+++ b/jp/lessons/basics/collections.md
@@ -75,11 +75,11 @@ iex> tl [3.14, :pie, "Apple"]
 前述した関数に加えて、リストを頭部と尾部に分けるのに[パターンマッチング](../pattern-matching/)やcons演算子(`|`)を使うこともできます。このパターンについては後のレッスンで取り上げます:
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/jp/lessons/basics/functions.md b/jp/lessons/basics/functions.md
index 14f037c455..75daf4200d 100644
--- a/jp/lessons/basics/functions.md
+++ b/jp/lessons/basics/functions.md
@@ -85,7 +85,7 @@ end
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []
diff --git a/ko/lessons/basics/collections.md b/ko/lessons/basics/collections.md
index 39f9013196..fe5cb50d60 100644
--- a/ko/lessons/basics/collections.md
+++ b/ko/lessons/basics/collections.md
@@ -77,11 +77,11 @@ iex> tl [3.14, :pie, "Apple"]
 > [역주] : `cons`는 Lisp 계열 언어에서 애텀과 리스트를 연결할 때 쓰이는 연산입니다. 첫번째 매개변수로 주어지는 애텀을 두번째 매개변수로 주어지는 리스트의 head 부분에 삽입하게 됩니다. `(cons 1 (2 3)) == (cons 1 (cons 2 (cons 3 nil))))`
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/ko/lessons/basics/functions.md b/ko/lessons/basics/functions.md
index 99cff68177..be5cd686e6 100644
--- a/ko/lessons/basics/functions.md
+++ b/ko/lessons/basics/functions.md
@@ -85,7 +85,7 @@ end
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []
diff --git a/lessons/basics/collections.md b/lessons/basics/collections.md
index bc988a11a9..785717c5c2 100644
--- a/lessons/basics/collections.md
+++ b/lessons/basics/collections.md
@@ -75,11 +75,11 @@ iex> tl [3.14, :pie, "Apple"]
 In addition to the aforementioned functions, you can use [pattern matching](../pattern-matching/) and the cons operator `|` to split a list into head and tail; we'll learn more about this pattern in later lessons:
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/lessons/basics/functions.md b/lessons/basics/functions.md
index f8c4751128..9dff105679 100644
--- a/lessons/basics/functions.md
+++ b/lessons/basics/functions.md
@@ -85,7 +85,7 @@ Armed with our knowledge of pattern matching, let's explore recursion using name
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []
diff --git a/lessons/basics/pattern-matching.md b/lessons/basics/pattern-matching.md
index 6ed1a36b88..ffc8057e65 100644
--- a/lessons/basics/pattern-matching.md
+++ b/lessons/basics/pattern-matching.md
@@ -43,7 +43,7 @@ iex> [1|tail] = list
 [1, 2, 3]
 iex> tail
 [2, 3]
-iex> [2|_] = list
+iex> [2 | _] = list
 ** (MatchError) no match of right hand side value: [1, 2, 3]
 
 # Tuples
diff --git a/my/lessons/basics/collections.md b/my/lessons/basics/collections.md
index 74252fff49..fd47ed6801 100644
--- a/my/lessons/basics/collections.md
+++ b/my/lessons/basics/collections.md
@@ -64,11 +64,11 @@ iex> tl [3.14, :pie, "Apple"]
 Sebagai tambahan kepada fungsi-fungsi yang telah disebutkan, anda juga dibenarkan menggunakan aksara paip `|`; kita akan melihat penggunaan corak ini di dalam pelajaran seterusnya:
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/my/lessons/basics/functions.md b/my/lessons/basics/functions.md
index 9d3ce50ddd..bbc57d5b9c 100644
--- a/my/lessons/basics/functions.md
+++ b/my/lessons/basics/functions.md
@@ -86,7 +86,7 @@ Bersedia dengan pengetahuan mengenai pemadanan corak, kita akan meneroka rekursi
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []
diff --git a/no/lessons/basics/collections.md b/no/lessons/basics/collections.md
index 9d68117da3..0342e3e3df 100644
--- a/no/lessons/basics/collections.md
+++ b/no/lessons/basics/collections.md
@@ -75,11 +75,11 @@ I tillegg til de tidligere nevnte funksjonene, kan vi også bruke
 cons operatoren `|` - Vi kommer tilbake til denne operatoren i en senere leksjon:
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/pl/lessons/basics/collections.md b/pl/lessons/basics/collections.md
index 859be292d3..7009527053 100644
--- a/pl/lessons/basics/collections.md
+++ b/pl/lessons/basics/collections.md
@@ -74,11 +74,11 @@ iex> tl [3.14, :pie, "Apple"]
 Poza wyżej wymienionymi funkcjami możemy też użyć operatora `|`; spotkamy się z nim w kolejnych lekcjach:
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/pl/lessons/basics/functions.md b/pl/lessons/basics/functions.md
index d72e33ff24..7ebabab6e6 100644
--- a/pl/lessons/basics/functions.md
+++ b/pl/lessons/basics/functions.md
@@ -85,7 +85,7 @@ Wykorzystując naszą wiedzę o dopasowaniu wzorców, stwórzmy funkcję rekuren
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []
diff --git a/pt/lessons/basics/collections.md b/pt/lessons/basics/collections.md
index a4d66285a5..580e72b0eb 100644
--- a/pt/lessons/basics/collections.md
+++ b/pt/lessons/basics/collections.md
@@ -63,11 +63,11 @@ iex> tl [3.14, :pie, "Apple"]
 Além das funções citadas, pode-se usar [pattern matching](../pattern-matching) e o operador cons `|` para dividir a lista em topo e cauda; veremos este padrão em futuras lições:
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/pt/lessons/basics/functions.md b/pt/lessons/basics/functions.md
index b8a2cfda66..a09354804d 100644
--- a/pt/lessons/basics/functions.md
+++ b/pt/lessons/basics/functions.md
@@ -84,7 +84,7 @@ Armado com nosso conhecimento sobre pattern matching, vamos explorar recursão u
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []
diff --git a/ru/lessons/basics/collections.md b/ru/lessons/basics/collections.md
index 78851438d7..19f3e4dfee 100644
--- a/ru/lessons/basics/collections.md
+++ b/ru/lessons/basics/collections.md
@@ -73,11 +73,11 @@ iex> tl [3.14, :pie, "Apple"]
 Того же результата можно добиться с использованием оператора cons &mdash; `|`. Мы будем часто его встречать в последующих уроках.
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/ru/lessons/basics/functions.md b/ru/lessons/basics/functions.md
index 3d8209954f..0d5925ec8c 100644
--- a/ru/lessons/basics/functions.md
+++ b/ru/lessons/basics/functions.md
@@ -85,7 +85,7 @@ end
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []
diff --git a/sk/lessons/basics/collections.md b/sk/lessons/basics/collections.md
index a916caa020..4657cb8373 100644
--- a/sk/lessons/basics/collections.md
+++ b/sk/lessons/basics/collections.md
@@ -65,11 +65,11 @@ iex> tl [3.14, :pie, "Apple"]
 Naviac, ako si ukážeme v neskorších lekciách, sa na tento účel dá krásne použiť operátor `|` (cons):
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/sk/lessons/basics/functions.md b/sk/lessons/basics/functions.md
index 5095742695..e5a807e029 100644
--- a/sk/lessons/basics/functions.md
+++ b/sk/lessons/basics/functions.md
@@ -87,7 +87,7 @@ Vyzbrojení pattern matchingom, vyskúšajme si rekurziu pomocou pomenovaných f
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []
diff --git a/vi/lessons/basics/collections.md b/vi/lessons/basics/collections.md
index fddbc6d11e..5a62b47fe9 100644
--- a/vi/lessons/basics/collections.md
+++ b/vi/lessons/basics/collections.md
@@ -63,11 +63,11 @@ iex> tl [3.14, :pie, "Apple"]
 Bên cạnh những hàm đã nói ở trên, bạn có thể dùng toán tử ống dẫn `|`; chúng ta sẽ còn gặp lại toán tử này trong các bài sau:
 
 ```elixir
-iex> [h|t] = [3.14, :pie, "Apple"]
+iex> [head | tail] = [3.14, :pie, "Apple"]
 [3.14, :pie, "Apple"]
-iex> h
+iex> head
 3.14
-iex> t
+iex> tail
 [:pie, "Apple"]
 ```
 
diff --git a/vi/lessons/basics/functions.md b/vi/lessons/basics/functions.md
index f4b32f6025..657b478320 100644
--- a/vi/lessons/basics/functions.md
+++ b/vi/lessons/basics/functions.md
@@ -85,7 +85,7 @@ Với những kiến thức về pattern matching đã biết, chúng ta hãy kh
 ```elixir
 defmodule Length do
   def of([]), do: 0
-  def of([_|t]), do: 1 + of(t)
+  def of([_ | tail]), do: 1 + of(tail)
 end
 
 iex> Length.of []