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Merge pull request #3438 from uzluisf/pod6-revision

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[perl6-pod/en] Add some minor changes
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Divay Prakash
2019-01-03 14:46:16 +05:30
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parent f8a6fd85ce 40b4e172e8
commit d08c4a7f79
1 changed files with 64 additions and 61 deletions
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@@ -5,17 +5,14 @@ contributors:
filename: learnpod.pod6 filename: learnpod.pod6
--- ---
Perl 6 Pod is an easy-to-use and purely descriptive mark-up language, Pod is an easy-to-use and purely descriptive mark-up language,
with no presentational components. Besides its use for documenting with no presentational components. Besides its use for documenting
Perl 6 programs and modules, Pod can be utilized to write language Raku Perl 6 programs and modules, Pod can be utilized to write language
documentation, blogs, and other types of document composition as well. documentation, blogs, and other types of document composition as well.
Pod documents can be easily converted to HTML and many other formats Pod documents can be easily converted to HTML and many other formats
(e.g., Markdown, Latex, plain text, etc.) by using the corresponding (e.g., Markdown, Latex, plain text, etc.) by using the corresponding
variant of the `Pod::To` modules (e.g. `<Pod::To::HTML>` for HTML conversion). variant of the `Pod::To` modules (e.g. `Pod::To::HTML` for HTML conversion).
Note: This document can be also be found as a Pod document
[here](https://git.io/fpxKI).
- [General Info](#general-info) - [General Info](#general-info)
- [Pod Basics](#pod-basics) - [Pod Basics](#pod-basics)
@@ -52,21 +49,23 @@ generate documentation.
``` ```
=begin pod =begin pod
A very simple Perl 6 Pod document. All the other directives go here! A very simple Raku Perl 6 Pod document. All the other directives go here!
=end pod =end pod
``` ```
Pod documents usually coexist with Perl 6 code. If by themselves, Pod files Pod documents usually coexist with Raku Perl 6 code. If by themselves,
often have the `.pod6` suffix. Moving forward, it's assumed that the Pod files often have the `.pod6` suffix. Moving forward, it's assumed that
constructs are between the `=begin pod ... =end pod` directives. the constructs being discussed are surrounded by the `=begin pod ... =end pod`
directives.
## Pod Basics ## Pod Basics
### Basic Text Formatting ### Basic Text Formatting
Text can be easily styled as bold, italic, underlined or verbatim (for code Text can be easily styled as bold, italic, underlined or verbatim (for code
formatting) using the formatting code: `B<>`, `I<>`, `U<>` and `C<>`. formatting) using the following formatting codes: `B<>`, `I<>`, `U<>`
and `C<>`.
``` ```
B<This text is in Bold.> B<This text is in Bold.>
@@ -81,7 +80,8 @@ The function C<sub sum { $^x + $^y}> is treated as verbatim.
There are more formatting codes (e.g., `L<>`, `T<>`, etc.) but they'll be There are more formatting codes (e.g., `L<>`, `T<>`, etc.) but they'll be
discussed later throughout the document. You'll recognize them because they're discussed later throughout the document. You'll recognize them because they're
just a single capital letter followed immediately by a set of single or double just a single capital letter followed immediately by a set of single or double
angle brackets. The Unicode variant («») can also be used. angle brackets. The Unicode variant («») of the angle brackets can also be
used.
### Headings ### Headings
@@ -136,7 +136,7 @@ This is another ordinary paragraph albeit shorter.
### Lists ### Lists
Unordered lists can be made using the `=item` directive. Unordered lists can be created using the `=item` directive.
``` ```
=item Item =item Item
@@ -145,7 +145,8 @@ Unordered lists can be made using the `=item` directive.
``` ```
Sublists are achieved with items at each level specified using the `=item1`, Sublists are achieved with items at each level specified using the `=item1`,
`=item2`, `=item3`, etc. directives. `=item2`, `=item3`, `...`, `=itemN` etc. directives. The `=item` directive
defaults to `=item1`.
``` ```
=item1 Item one =item1 Item one
@@ -156,8 +157,8 @@ Sublists are achieved with items at each level specified using the `=item1`,
=item1 Item four =item1 Item four
``` ```
Definition lists that define terms or commands use the `=defn`. This is Definition lists that define terms or commands use the `=defn` directive.
equivalent to the `<dl>` element in HTML. This is equivalent to the `<dl>` element in HTML.
``` ```
=defn Beast of Bodmin =defn Beast of Bodmin
@@ -172,7 +173,7 @@ A giant owl-like creature.
### Code Blocks ### Code Blocks
A code block is created (which uses the `<code>` element) by starting each A code block is created (which uses the HTML `<code>` element) by starting each
line with one or more whitespace characters. line with one or more whitespace characters.
``` ```
@@ -185,16 +186,16 @@ As shown in the [Basic Text Formatting](#basic-text-formatting) section,
inline code can be created using the `C<>` code. inline code can be created using the `C<>` code.
``` ```
In Perl 6, there are several functions/methods to output text. Some of them In Raku Perl 6, there are several functions/methods to output text. Some of them
are C<print>, C<put> and C<say>. are C<print>, C<put> and C<say>.
``` ```
### Comments ### Comments
Although Pod blocks are ignored by the Perl 6 compiler, everything indentified Although Pod blocks are ignored by the Raku Perl 6 compiler, everything
as a Pod block will be read and interpreted by Pod renderers. In order to indentified as a Pod block will be read and interpreted by Pod renderers. In
prevent Pod blocks from being rendered by any renderer, use the `=comment` order to prevent Pod blocks from being rendered by any renderer, use the
directive. `=comment` directive.
``` ```
=comment Add more here about the algorithm. =comment Add more here about the algorithm.
@@ -205,12 +206,12 @@ directive.
To create inline comments, use the `Z<>` code. To create inline comments, use the `Z<>` code.
``` ```
Pod is awesome Z<Of course it is!>. And Perl 6 too! Pod is awesome Z<Of course it is!>. And Raku Perl 6 too!
``` ```
Given that the Perl interpreter never executes embedded Pod blocks, Given that the Perl interpreter never executes embedded Pod blocks,
comment blocks can also be used as an alternative form of nestable block comment blocks can also be used as an alternative form of nestable block
comments in Perl 6. comments in Raku Perl 6.
### Links ### Links
@@ -219,7 +220,7 @@ a `L<>` code. The general format is `L<Label|Url>` with `Label`
being optional. being optional.
``` ```
Perl 6 homepage is L<https://perl6.org>. Raku Perl 6 homepage is L<https://perl6.org>.
L<Click me!|http://link.org/>. L<Click me!|http://link.org/>.
``` ```
@@ -237,11 +238,11 @@ L<Link to Headings|#Headings>
### Tables ### Tables
The Pod 6 specifications are not completely handled properly yet and this The Pod specifications are not completely handled properly yet and this
includes the handling of table. For simplicity's sake, only one way of includes the handling of table. For simplicity's sake, only one way of
constructing tables is shown. To learn about good practices and see examples constructing tables is shown here. To learn about good practices and see
of both good and bad tables, please visit examples of both good and bad tables, please visit
https://docs.perl6.org/language/tables. <https://docs.perl6.org/language/tables>.
``` ```
=begin table =begin table
@@ -256,15 +257,13 @@ ext | extension to be used for dest files.
## Block Structures ## Block Structures
As mentioned earlier, Pod documents are specified using directives, which are As mentioned earlier, Pod documents are specified using directives, which are
used to delimit blocks of textual content and declare optional [configuration used to delimit blocks of textual content and declare optional
information](#configuration-data). Every directive starts with an equals [configuration information](#configuration-data). Every directive starts with
sign (`=`) in the first column. an equals sign (`=`) in the first column. The content of a document is
specified within one or more blocks. Every Pod block may be declared in any of
three equivalent forms: delimited style, paragraph style, or abbreviated style.
The content of a document is specified within one or more blocks. Every Pod Up to this point, we have only used the abbreviated style for the block
block may be declared in any of three equivalent forms: delimited style,
paragraph style, or abbreviated style.
Up to this point, we only used the abbreviated style for the block
types (e.g., `=head1`, `=para`, `=comment`, `=item`, etc). types (e.g., `=head1`, `=para`, `=comment`, `=item`, etc).
### Abbreviated Blocks ### Abbreviated Blocks
@@ -287,7 +286,7 @@ For example:
### Delimited Blocks ### Delimited Blocks
Delimited blocks are bounded by `=begin` and `=end` markers, both of which are Delimited blocks are bounded by `=begin` and `=end` markers, both of which are
followed by a valid Perl 6 identifier, which is the `typename` of the block. followed by a valid Pod identifier, which is the `typename` of the block.
The general syntax is The general syntax is
``` ```
@@ -321,13 +320,13 @@ This is another paragraph in the same list item.
``` ```
=begin code =begin code
#`(A recursive implementation of #`(
a power function using multi subs. A non-efficient recursive implementation of a power function using multi subs.
) )
multi pow( Real $base, 0 ) { 1 } multi pow( Real $base, 0 ) { 1 }
multi pow( Real $base, Int $exp where * >= 0) { multi pow( Real $base, Int $exp where * ≥ 0) {
$base * pow($base, $exp - 1) $base * pow($base, $exp - 1)
} }
@@ -386,9 +385,9 @@ BLOCK DATA
The configuration information is provided in a format akin to the The configuration information is provided in a format akin to the
["colon pair"](https://docs.perl6.org/language/glossary#index-entry-Colon_Pair) ["colon pair"](https://docs.perl6.org/language/glossary#index-entry-Colon_Pair)
syntax in Perl 6. The following table is a simplified version of the syntax in Raku Perl 6. The following table is a simplified version of the
different ways in which configuration info can supplied. Please go to different ways in which configuration info can be supplied. Please go to
https://docs.perl6.org/language/pod#Configuration_information for a more <https://docs.perl6.org/language/pod#Configuration_information> for a more
thorough treatment of the subject. thorough treatment of the subject.
| Value | Specify with... | Example | | Value | Specify with... | Example |
@@ -451,7 +450,8 @@ we get the following output:
</pre> </pre>
This is highly dependent on the format output. For example, while this works This is highly dependent on the format output. For example, while this works
when Pod is converted to HTML, it might not work with Markdown. when Pod is converted to HTML, it might not be preserved when converted
to Markdown.
### Block Pre-configuration ### Block Pre-configuration
@@ -499,11 +499,13 @@ Not source code needed! Most of it is outsourced from a black hole.
=end DESCRIPTION =end DESCRIPTION
=begin SYNOPSIS =begin SYNOPSIS
=begin code
use Doc::Magic; use Doc::Magic;
my Doc::Magic $doc .= new(); my Doc::Magic $doc .= new();
my $result = $doc.create-documentation($fh); my $result = $doc.create-documentation($fh);
=end code
=end SYNOPSIS =end SYNOPSIS
=AUTHOR Authorius Docus =AUTHOR Authorius Docus
@@ -544,27 +546,29 @@ Hello, T<John Doe>
To include Unicode code points or HTML5 character references in To include Unicode code points or HTML5 character references in
a Pod document, enclose them in a `E<>` code. a Pod document, enclose them in a `E<>` code.
For example:
``` ```
Perl 6 makes considerable use of the E<171> and E<187> characters. Raku Perl 6 makes considerable use of the E<171> and E<187> characters.
Perl 6 makes considerable use of the E<laquo> and E<raquo> characters. Raku Perl 6 makes considerable use of the E<laquo> and E<raquo> characters.
``` ```
this is rendered as: is rendered as:
Perl 6 makes considerable use of the « and » characters. Raku Perl 6 makes considerable use of the « and » characters.
Perl 6 makes considerable use of the « and » characters. Raku Perl 6 makes considerable use of the « and » characters.
## Rendering Pod ## Rendering Pod
To generate any output (i.e., Markdown, HTML, Text, etc.), you need to To generate any output (i.e., Markdown, HTML, Text, etc.), you need to
have the Perl 6 compiler installed. In addition, you must install have the Raku Perl 6 compiler installed. In addition, you must install
a module (e.g., `Pod::To::Markdown`, `Pod::To::HTML`, `Pod::To::Text`, etc.) a module (e.g., `Pod::To::Markdown`, `Pod::To::HTML`, `Pod::To::Text`, etc.)
that generates your desired output from Pod. that generates your desired output from Pod.
For instructions about installing Perl 6, For instructions about installing Raku Perl 6,
[look here](https://perl6.org/downloads/). [look here](https://perl6.org/downloads/).
Run the following command to generate a certain output Run the following command to generate a certain output:
``` ```
perl6 --doc=TARGET input.pod6 > output.html perl6 --doc=TARGET input.pod6 > output.html
@@ -579,14 +583,14 @@ perl6 --doc=Markdown input.pod6 > output.html
## Accessing Pod ## Accessing Pod
In order to access Pod documentation from within a Perl 6 program, In order to access Pod documentation from within a Raku Perl 6 program,
it is required to use the special `=` twigil (e.g., `$=pod`, `$=SYNOPSIS`,etc). it is required to use the special `=` twigil (e.g., `$=pod`, `$=SYNOPSIS`,etc).
The `=` twigil provides the introspection over the Pod structure, The `$=` construct provides the introspection over the Pod structure,
providing a `Pod::Block` tree root from which it is possible to access producing a `Pod::Block` tree root from which it is possible to access
the whole structure of the Pod document. the whole structure of the Pod document.
If we place the following piece of Perl 6 code and the Pod documentation If we place the following piece of Raku Perl 6 code and the Pod documentation
in the section [Semantic blocks](#semantic-blocks) in the same file: in the section [Semantic blocks](#semantic-blocks) in the same file:
``` ```
@@ -613,7 +617,6 @@ DESCRIPTION
## Additional Information ## Additional Information
* https://docs.perl6.org/language/pod * <https://docs.perl6.org/language/pod> for the Pod documentation.
* https://docs.perl6.org/language/tables * <https://docs.perl6.org/language/tables> for advices about Pod tables.
* https://design.perl6.org/S26.html * <https://design.perl6.org/S26.html> for the Pod specification.