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mw>Shirayuki: Created page with "== 使用法 =="

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Created page with "== 使用法 =="

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<noinclude>{{#ifeq:{{SUBPAGENAME}}|doc||{{Documentation subpage}}}}<languages /></noinclude>{{#switch:
| =
<includeonly>{{Languages|Module:Yesno/doc}}</includeonly>

{{Shared Template Warning}}
{{high-risk}}
{{used in system}}
{{Module rating|release}}
{{Module rating|protected}}
このモジュールは、真偽値または真偽値スタイルの文字列入力を処理するための一貫したインターフェイスを提供します。
Lua では <code>true</code> と <code>false</code> の真偽値を使用できますが、ウィキコードテンプレートでは "1"、"0"、"yes"、"no" などの文字列でしか真偽値を表現できません。
このモジュールは、このような種類の文字列を処理して、Lua が処理できる真偽値の入力に変えます。
また、<code>nil</code> の値を <code>nil</code> として返すことで、<code>nil</code> と <code>false</code> の区別ができるようにします。
このモジュールは、真偽値、数値、テーブル、関数など、他の Lua 構造も入力として受け付けます。
If it is passed input that it does not recognise as boolean or <code>nil</code>, it is possible to specify a default value to return.
<div lang="en" dir="ltr" class="mw-content-ltr">
== Module Quality ==
</div>
{{ModuleQuality}}

== 構文 ==
<syntaxhighlight lang="lua">
yesno(value, default)
</syntaxhighlight>

<code>value</code> is the value to be tested.
Boolean input or boolean-style input (see below) always evaluates to either <code>true</code> or <code>false</code>, and <code>nil</code> always evaluates to <code>nil</code>.
Other values evaluate to <code>default</code>.

== 使用法 ==
First, load the module. Note that it can only be loaded from other Lua modules, not from normal wiki pages.
For normal wiki pages you can use {{tlx|yesno}} instead.

<syntaxhighlight lang="lua">
local yesno = require('Module:Yesno')
</syntaxhighlight>

Some input values always return <code>true</code>, and some always return <code>false</code>.
<code>nil</code> values always return <code>nil</code>.

<syntaxhighlight lang="lua">
-- These always return true:
yesno('yes')
yesno('y')
yesno('true')
yesno('t')
yesno('1')
yesno(1)
yesno(true)

-- These always return false:
yesno('no')
yesno('n')
yesno('false')
yesno('f')
yesno('0')
yesno(0)
yesno(false)

-- A nil value always returns nil:
yesno(nil)
</syntaxhighlight>
<div lang="en" dir="ltr" class="mw-content-ltr">
String values are converted to lower case before they are matched:
</div>
<syntaxhighlight lang="lua">
-- These always return true:
yesno('Yes')
yesno('YES')
yesno('yEs')
yesno('Y')
yesno('tRuE')

-- These always return false:
yesno('No')
yesno('NO')
yesno('nO')
yesno('N')
yesno('fALsE')
</syntaxhighlight>

You can specify a default value if <code>yesno</code> receives input other than that listed above.
If you don't supply a default, the module will return <code>nil</code> for these inputs.

<syntaxhighlight lang="lua">
-- These return nil:
yesno('foo')
yesno({})
yesno(5)
yesno(function() return 'This is a function.' end)

-- These return true:
yesno('foo', true)
yesno({}, true)
yesno(5, true)
yesno(function() return 'This is a function.' end, true)

-- These return "bar":
yesno('foo', 'bar')
yesno({}, 'bar')
yesno(5, 'bar')
yesno(function() return 'This is a function.' end, 'bar')
</syntaxhighlight>
<div lang="en" dir="ltr" class="mw-content-ltr">
Note that the blank string also functions this way:
</div>
<syntaxhighlight lang="lua">
yesno('') -- Returns nil.
yesno('', true) -- Returns true.
yesno('', 'bar') -- Returns "bar".
</syntaxhighlight>

Although the blank string usually evaluates to <code>false</code> in wikitext, it evaluates to <code>true</code> in Lua.
This module prefers the Lua behaviour over the wikitext behaviour.
If treating the blank string as <code>false</code> is important for your module, you will need to remove blank arguments at an earlier stage of processing.
<includeonly>{{Sandbox other||

[[Category:Modules]]
}}</includeonly><noinclude>
[[Category:Module documentation pages{{#translation:}}]]
</noinclude>
| #default=
{{#invoke:Template translation|renderTranslatedTemplate|template=Module:Yesno/doc|noshift=1|uselang={{int:lang}}}}
}}

Module:Yesno/doc/ja - Revision history

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mw>Shirayuki: Created page with "== 使用法 =="