denisshevchenko/ohaskell.guide

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Line length
Open

Сначала идёт эдакое единое объявление для всех строк, ведь они имеют тип `String`. А затем идут определения. Обратите внимание, что строковые литералы выровнены по левому краю. Опираясь на собственный опыт, я настаиваю на удобстве такого выравнивания. Попробуем иначе:
Severity: Info
Found in practice/003-types.md by markdownlint

MD013 - Line length

Tags: line_length

Aliases: line-length Parameters: linelength, codeblocks, tables (number; default 80, boolean; default true)

This rule is triggered when there are lines that are longer than the configured line length (default: 80 characters). To fix this, split the line up into multiple lines.

This rule has an exception where there is no whitespace beyond the configured line length. This allows you to still include items such as long URLs without being forced to break them in the middle.

You also have the option to exclude this rule for code blocks and tables. To do this, set the code_blocks and/or tables parameters to false.

Code blocks are included in this rule by default since it is often a requirement for document readability, and tentatively compatible with code rules. Still, some languages do not lend themselves to short lines.

Line length
Open

2. Работающий код, ожидающий ваших улучшений. Речь идёт о плохой стилистике, нарушении DRY-принципа и подобных вещах.
Severity: Info
Found in practice/001-init.md by markdownlint

MD013 - Line length

Tags: line_length

Aliases: line-length Parameters: linelength, codeblocks, tables (number; default 80, boolean; default true)

This rule is triggered when there are lines that are longer than the configured line length (default: 80 characters). To fix this, split the line up into multiple lines.

This rule has an exception where there is no whitespace beyond the configured line length. This allows you to still include items such as long URLs without being forced to break them in the middle.

You also have the option to exclude this rule for code blocks and tables. To do this, set the code_blocks and/or tables parameters to false.

Code blocks are included in this rule by default since it is often a requirement for document readability, and tentatively compatible with code rules. Still, some languages do not lend themselves to short lines.

Line length
Open

Здесь функция говорит: «Как только я вторым аргументом получу пустой список, я, игнорируя первый аргумент, немедленно дам тот же самый пустой список». Поэтому оставшееся на последней итерации выражение справа:
Severity: Info
Found in chapters/17-recursion.md by markdownlint

MD013 - Line length

Tags: line_length

Aliases: line-length Parameters: linelength, codeblocks, tables (number; default 80, boolean; default true)

This rule is triggered when there are lines that are longer than the configured line length (default: 80 characters). To fix this, split the line up into multiple lines.

This rule has an exception where there is no whitespace beyond the configured line length. This allows you to still include items such as long URLs without being forced to break them in the middle.

You also have the option to exclude this rule for code blocks and tables. To do this, set the code_blocks and/or tables parameters to false.

Code blocks are included in this rule by default since it is often a requirement for document readability, and tentatively compatible with code rules. Still, some languages do not lend themselves to short lines.

Line length
Open

Открою секрет: рекурсивными в Haskell бывают не только функции, но и типы. Но об этом в последующих главах.
Severity: Info
Found in chapters/17-recursion.md by markdownlint

MD013 - Line length

Tags: line_length

Aliases: line-length Parameters: linelength, codeblocks, tables (number; default 80, boolean; default true)

This rule is triggered when there are lines that are longer than the configured line length (default: 80 characters). To fix this, split the line up into multiple lines.

This rule has an exception where there is no whitespace beyond the configured line length. This allows you to still include items such as long URLs without being forced to break them in the middle.

You also have the option to exclude this rule for code blocks and tables. To do this, set the code_blocks and/or tables parameters to false.

Code blocks are included in this rule by default since it is often a requirement for document readability, and tentatively compatible with code rules. Still, some languages do not lend themselves to short lines.

Line length
Open

мы говорим компилятору: «`IPAddress` — это абсолютно новый и самобытный тип, которого никогда не было ранее». А когда пишем так:
Severity: Info
Found in chapters/22-newtype.md by markdownlint

MD013 - Line length

Tags: line_length

Aliases: line-length Parameters: linelength, codeblocks, tables (number; default 80, boolean; default true)

This rule is triggered when there are lines that are longer than the configured line length (default: 80 characters). To fix this, split the line up into multiple lines.

This rule has an exception where there is no whitespace beyond the configured line length. This allows you to still include items such as long URLs without being forced to break them in the middle.

You also have the option to exclude this rule for code blocks and tables. To do this, set the code_blocks and/or tables parameters to false.

Code blocks are included in this rule by default since it is often a requirement for document readability, and tentatively compatible with code rules. Still, some languages do not lend themselves to short lines.

Line length
Open

Практический раздел не имеет точки релиза или окончания, новые упражнения будут появляться периодически. И если у вас есть предложения по упражнениям, вы можете оставить их в комментариях ниже, написать в [наш чат](https://gitter.im/denisshevchenko/ohaskell-book) или же открыть [issue](https://github.com/denisshevchenko/ohaskell.guide/issues).
Severity: Info
Found in practice/999-wip-forever.md by markdownlint

MD013 - Line length

Tags: line_length

Aliases: line-length Parameters: linelength, codeblocks, tables (number; default 80, boolean; default true)

This rule is triggered when there are lines that are longer than the configured line length (default: 80 characters). To fix this, split the line up into multiple lines.

This rule has an exception where there is no whitespace beyond the configured line length. This allows you to still include items such as long URLs without being forced to break them in the middle.

You also have the option to exclude this rule for code blocks and tables. To do this, set the code_blocks and/or tables parameters to false.

Code blocks are included in this rule by default since it is often a requirement for document readability, and tentatively compatible with code rules. Still, some languages do not lend themselves to short lines.

Line length
Open

Конструктор `EndPoint` — бинарный, ведь здесь уже два значения. Создаём обычным образом:
Severity: Info
Found in chapters/20-adt.md by markdownlint

MD013 - Line length

Tags: line_length

Aliases: line-length Parameters: linelength, codeblocks, tables (number; default 80, boolean; default true)

This rule is triggered when there are lines that are longer than the configured line length (default: 80 characters). To fix this, split the line up into multiple lines.

This rule has an exception where there is no whitespace beyond the configured line length. This allows you to still include items such as long URLs without being forced to break them in the middle.

You also have the option to exclude this rule for code blocks and tables. To do this, set the code_blocks and/or tables parameters to false.

Code blocks are included in this rule by default since it is often a requirement for document readability, and tentatively compatible with code rules. Still, some languages do not lend themselves to short lines.

Line length
Open

И всё бы хорошо, но тип `EndPoint` мне не очень нравится. Есть в нём что-то некрасивое. Первым полем выступает строка, содержащая IP-адрес, но зачем нам строка? У нас же есть прекрасный тип `IPAddress`, он куда лучше безликой строки. Это общее правило для Haskell-разработчика: чем больше информации несёт в себе тип, тем он лучше. Давайте заменим определение:
Severity: Info
Found in chapters/20-adt.md by markdownlint

MD013 - Line length

Tags: line_length

Aliases: line-length Parameters: linelength, codeblocks, tables (number; default 80, boolean; default true)

This rule is triggered when there are lines that are longer than the configured line length (default: 80 characters). To fix this, split the line up into multiple lines.

This rule has an exception where there is no whitespace beyond the configured line length. This allows you to still include items such as long URLs without being forced to break them in the middle.

You also have the option to exclude this rule for code blocks and tables. To do this, set the code_blocks and/or tables parameters to false.

Code blocks are included in this rule by default since it is often a requirement for document readability, and tentatively compatible with code rules. Still, some languages do not lend themselves to short lines.

Line length
Open

Вот мы и познакомились с настоящими типами. Пришло время узнать о более удобной работе с полями типов.
Severity: Info
Found in chapters/20-adt.md by markdownlint

MD013 - Line length

Tags: line_length

Aliases: line-length Parameters: linelength, codeblocks, tables (number; default 80, boolean; default true)

This rule is triggered when there are lines that are longer than the configured line length (default: 80 characters). To fix this, split the line up into multiple lines.

This rule has an exception where there is no whitespace beyond the configured line length. This allows you to still include items such as long URLs without being forced to break them in the middle.

You also have the option to exclude this rule for code blocks and tables. To do this, set the code_blocks and/or tables parameters to false.

Code blocks are included in this rule by default since it is often a requirement for document readability, and tentatively compatible with code rules. Still, some languages do not lend themselves to short lines.

Line length
Open

Сделать это можно несколькими способами, мы выберем самый удобный. Называется он [The Haskell Tool Stack](http://haskellstack.org/). Эта маленькая утилита — всё, что вам понадобится для работы с Haskell.
Severity: Info
Found in chapters/04-setup.md by markdownlint

MD013 - Line length

Tags: line_length

Aliases: line-length Parameters: linelength, codeblocks, tables (number; default 80, boolean; default true)

This rule is triggered when there are lines that are longer than the configured line length (default: 80 characters). To fix this, split the line up into multiple lines.

This rule has an exception where there is no whitespace beyond the configured line length. This allows you to still include items such as long URLs without being forced to break them in the middle.

You also have the option to exclude this rule for code blocks and tables. To do this, set the code_blocks and/or tables parameters to false.

Code blocks are included in this rule by default since it is often a requirement for document readability, and tentatively compatible with code rules. Still, some languages do not lend themselves to short lines.

Line length
Open

Здесь `real` — название проекта. В результате будет создан каталог `real`, внутри которого мы увидим это:
Severity: Info
Found in chapters/04-setup.md by markdownlint

MD013 - Line length

Tags: line_length

Aliases: line-length Parameters: linelength, codeblocks, tables (number; default 80, boolean; default true)

This rule is triggered when there are lines that are longer than the configured line length (default: 80 characters). To fix this, split the line up into multiple lines.

This rule has an exception where there is no whitespace beyond the configured line length. This allows you to still include items such as long URLs without being forced to break them in the middle.

You also have the option to exclude this rule for code blocks and tables. To do this, set the code_blocks and/or tables parameters to false.

Code blocks are included in this rule by default since it is often a requirement for document readability, and tentatively compatible with code rules. Still, some languages do not lend themselves to short lines.

Ordered list item prefix
Open

3. Устанавливать библиотеки.
Severity: Info
Found in chapters/04-setup.md by markdownlint

MD029 - Ordered list item prefix

Tags: ol

Aliases: ol-prefix

Parameters: style ("one", "ordered"; default "one")

This rule is triggered on ordered lists that do not either start with '1.' or do not have a prefix that increases in numerical order (depending on the configured style, which defaults to 'one').

Example valid list if the style is configured as 'one':

1. Do this.
1. Do that.
1. Done.

Example valid list if the style is configured as 'ordered':

1. Do this.
2. Do that.
3. Done.

Trailing punctuation in header
Open

# Работа продолжается!
Severity: Info
Found in practice/999-wip-forever.md by markdownlint

MD026 - Trailing punctuation in header

Tags: headers

Aliases: no-trailing-punctuation

Parameters: punctuation (string; default ".,;:!?")

This rule is triggered on any header that has a punctuation character as the last character in the line:

# This is a header.

To fix this, remove any trailing punctuation:

# This is a header

Note: The punctuation parameter can be used to specify what characters class as punctuation at the end of the header. For example, you can set it to '.,;:!' to allow headers with question marks in them, such as might be used in an FAQ.

Line length
Open

Видите лишний отступ в один пробел перед `userAndRepo` и `ghPrefix`? Таким образом, правильный вариант такой:
Severity: Info
Found in practice/002-repos.md by markdownlint

MD013 - Line length

Tags: line_length

Aliases: line-length Parameters: linelength, codeblocks, tables (number; default 80, boolean; default true)

This rule is triggered when there are lines that are longer than the configured line length (default: 80 characters). To fix this, split the line up into multiple lines.

This rule has an exception where there is no whitespace beyond the configured line length. This allows you to still include items such as long URLs without being forced to break them in the middle.

You also have the option to exclude this rule for code blocks and tables. To do this, set the code_blocks and/or tables parameters to false.

Code blocks are included in this rule by default since it is often a requirement for document readability, and tentatively compatible with code rules. Still, some languages do not lend themselves to short lines.

Line length
Open

Итак, освоившись с теорией, настала пора нам прикоснуться к практике. В этом разделе вы найдёте множество упражнений, охватывающих широкий круг Haskell-тем. Конечно, я подразумеваю, что вы читаете или уже прочли [мою книгу](/init.html). Впрочем, подойдёт и другая, подобная ей, такая как [«Изучай Haskell во имя добра»](http://dmkpress.com/catalog/computer/programming/functional/978-5-97060-025-2/).
Severity: Info
Found in practice/001-init.md by markdownlint

MD013 - Line length

Tags: line_length

Aliases: line-length Parameters: linelength, codeblocks, tables (number; default 80, boolean; default true)

This rule is triggered when there are lines that are longer than the configured line length (default: 80 characters). To fix this, split the line up into multiple lines.

This rule has an exception where there is no whitespace beyond the configured line length. This allows you to still include items such as long URLs without being forced to break them in the middle.

You also have the option to exclude this rule for code blocks and tables. To do this, set the code_blocks and/or tables parameters to false.

Code blocks are included in this rule by default since it is often a requirement for document readability, and tentatively compatible with code rules. Still, some languages do not lend themselves to short lines.

Line length
Open

Это модуль `Main`, главный модуль нашего приложения, ведь именно здесь определена функция `main`. С помощью директивы `import` мы включаем сюда модуль `Lib` и можем работать с содержимым этого модуля.
Severity: Info
Found in chapters/04-setup.md by markdownlint

MD013 - Line length

Tags: line_length

Aliases: line-length Parameters: linelength, codeblocks, tables (number; default 80, boolean; default true)

This rule is triggered when there are lines that are longer than the configured line length (default: 80 characters). To fix this, split the line up into multiple lines.

This rule has an exception where there is no whitespace beyond the configured line length. This allows you to still include items such as long URLs without being forced to break them in the middle.

You also have the option to exclude this rule for code blocks and tables. To do this, set the code_blocks and/or tables parameters to false.

Code blocks are included in this rule by default since it is often a requirement for document readability, and tentatively compatible with code rules. Still, some languages do not lend themselves to short lines.

Dollar signs used before commands without showing output
Open

```bash
Severity: Info
Found in chapters/04-setup.md by markdownlint

MD014 - Dollar signs used before commands without showing output

Tags: code

Aliases: commands-show-output

This rule is triggered when there are code blocks showing shell commands to be typed, and the shell commands are preceded by dollar signs ($):

$ ls
$ cat foo
$ less bar

The dollar signs are unnecessary in the above situation, and should not be included:

ls
cat foo
less bar

However, an exception is made when there is a need to distinguish between typed commands and command output, as in the following example:

$ ls
foo bar
$ cat foo
Hello world
$ cat bar
baz

Rationale: it is easier to copy and paste and less noisy if the dollar signs are omitted when they are not needed. See http://www.cirosantilli.com/markdown-styleguide/#dollar-signs-in-shell-code for more information.

Line length
Open

На самом нижнем этаже расположены простейшие стандартные типы, такие как `Int`, `Double`, `Char` или список. Возьмём, например, тип `Int`. Что это такое? Целое число. Оно не несёт в себе никакого смысла, это всего лишь число в вакууме. Или вот строка — что она такое? Это просто набор каких-то символов в том же вакууме, и ничего более. И если бы мы были ограничены лишь этими типами, наша программистская жизнь была бы весьма грустной.

MD013 - Line length

Tags: line_length

Aliases: line-length Parameters: linelength, codeblocks, tables (number; default 80, boolean; default true)

This rule is triggered when there are lines that are longer than the configured line length (default: 80 characters). To fix this, split the line up into multiple lines.

This rule has an exception where there is no whitespace beyond the configured line length. This allows you to still include items such as long URLs without being forced to break them in the middle.

You also have the option to exclude this rule for code blocks and tables. To do this, set the code_blocks and/or tables parameters to false.

Code blocks are included in this rule by default since it is often a requirement for document readability, and tentatively compatible with code rules. Still, some languages do not lend themselves to short lines.

Line length
Open

Помимо `data` существует ещё одно ключевое слово, предназначенное для определения нового типа. Оно так и называется — `newtype`. Эти слова похожи друг на друга «в одну сторону»: вы можете поставить `data` на место `newtype`, но не наоборот.
Severity: Info
Found in chapters/22-newtype.md by markdownlint

MD013 - Line length

Tags: line_length

Aliases: line-length Parameters: linelength, codeblocks, tables (number; default 80, boolean; default true)

This rule is triggered when there are lines that are longer than the configured line length (default: 80 characters). To fix this, split the line up into multiple lines.

This rule has an exception where there is no whitespace beyond the configured line length. This allows you to still include items such as long URLs without being forced to break them in the middle.

You also have the option to exclude this rule for code blocks and tables. To do this, set the code_blocks and/or tables parameters to false.

Code blocks are included in this rule by default since it is often a requirement for document readability, and tentatively compatible with code rules. Still, some languages do not lend themselves to short lines.

Line length
Open

Мало того, что перед нами вновь безликие `Int`, так их ещё и два. И вот какая нелепая ошибка может нас поджидать:
Severity: Info
Found in chapters/22-newtype.md by markdownlint

MD013 - Line length

Tags: line_length

Aliases: line-length Parameters: linelength, codeblocks, tables (number; default 80, boolean; default true)

This rule is triggered when there are lines that are longer than the configured line length (default: 80 characters). To fix this, split the line up into multiple lines.

This rule has an exception where there is no whitespace beyond the configured line length. This allows you to still include items such as long URLs without being forced to break them in the middle.

You also have the option to exclude this rule for code blocks and tables. To do this, set the code_blocks and/or tables parameters to false.

Code blocks are included in this rule by default since it is often a requirement for document readability, and tentatively compatible with code rules. Still, some languages do not lend themselves to short lines.

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