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<title>Data/List/Unicode.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE NoImplicitPrelude, UnicodeSyntax #-}</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='hs-comment'>{-|
<a name="line-4"></a>Module : Data.List.Unicode
<a name="line-5"></a>Copyright : 2009–2011 Roel van Dijk
<a name="line-6"></a>License : BSD3 (see the file LICENSE)
<a name="line-7"></a>Maintainer : Roel van Dijk <vandijk.roel@gmail.com>
<a name="line-8"></a>-}</span>
<a name="line-9"></a>
<a name="line-10"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-conid'>Unicode</span>
<a name="line-11"></a> <span class='hs-layout'>(</span> <span class='hs-layout'>(</span><span class='hs-sel'>⧺</span><span class='hs-layout'>)</span>
<a name="line-12"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-sel'>∈</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-sel'>∋</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-sel'>∉</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-sel'>∌</span><span class='hs-layout'>)</span>
<a name="line-13"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-sel'>∪</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-sel'>∖</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-sel'>∆</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-sel'>∩</span><span class='hs-layout'>)</span>
<a name="line-14"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-15"></a>
<a name="line-16"></a>
<a name="line-17"></a><span class='hs-comment'>-------------------------------------------------------------------------------</span>
<a name="line-18"></a><span class='hs-comment'>-- Imports</span>
<a name="line-19"></a><span class='hs-comment'>-------------------------------------------------------------------------------</span>
<a name="line-20"></a>
<a name="line-21"></a><span class='hs-comment'>-- from base:</span>
<a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Bool</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Bool</span> <span class='hs-layout'>)</span>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Eq</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Eq</span> <span class='hs-layout'>)</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Function</span> <span class='hs-layout'>(</span> <span class='hs-varid'>flip</span> <span class='hs-layout'>)</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span> <span class='hs-layout'>(</span> <span class='hs-layout'>(</span><span class='hs-varop'>++</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>elem</span><span class='hs-layout'>,</span> <span class='hs-varid'>notElem</span><span class='hs-layout'>,</span> <span class='hs-varid'>union</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'>\\</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>intersect</span> <span class='hs-layout'>)</span>
<a name="line-26"></a>
<a name="line-27"></a>
<a name="line-28"></a><span class='hs-comment'>-------------------------------------------------------------------------------</span>
<a name="line-29"></a><span class='hs-comment'>-- Fixities</span>
<a name="line-30"></a><span class='hs-comment'>-------------------------------------------------------------------------------</span>
<a name="line-31"></a>
<a name="line-32"></a><span class='hs-keyword'>infix</span> <span class='hs-num'>4</span> <span class='hs-sel'>∈</span>
<a name="line-33"></a><span class='hs-keyword'>infix</span> <span class='hs-num'>4</span> <span class='hs-sel'>∋</span>
<a name="line-34"></a><span class='hs-keyword'>infix</span> <span class='hs-num'>4</span> <span class='hs-sel'>∉</span>
<a name="line-35"></a><span class='hs-keyword'>infix</span> <span class='hs-num'>4</span> <span class='hs-sel'>∌</span>
<a name="line-36"></a><span class='hs-keyword'>infixr</span> <span class='hs-num'>5</span> <span class='hs-sel'>⧺</span>
<a name="line-37"></a><span class='hs-keyword'>infixl</span> <span class='hs-num'>6</span> <span class='hs-sel'>∪</span>
<a name="line-38"></a><span class='hs-keyword'>infixr</span> <span class='hs-num'>6</span> <span class='hs-sel'>∩</span>
<a name="line-39"></a><span class='hs-keyword'>infixl</span> <span class='hs-num'>9</span> <span class='hs-sel'>∖</span>
<a name="line-40"></a><span class='hs-keyword'>infixl</span> <span class='hs-num'>9</span> <span class='hs-sel'>∆</span>
<a name="line-41"></a>
<a name="line-42"></a>
<a name="line-43"></a><span class='hs-comment'>-------------------------------------------------------------------------------</span>
<a name="line-44"></a><span class='hs-comment'>-- Symbols</span>
<a name="line-45"></a><span class='hs-comment'>-------------------------------------------------------------------------------</span>
<a name="line-46"></a>
<a name="line-47"></a><span class='hs-comment'>{-|
<a name="line-48"></a>(&#x29FA;) = ('++')
<a name="line-49"></a>
<a name="line-50"></a>U+29FA, DOUBLE PLUS
<a name="line-51"></a>-}</span>
<a name="line-52"></a><span class='hs-layout'>(</span><span class='hs-sel'>⧺</span><span class='hs-layout'>)</span> <span class='hs-sel'>∷</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span> <span class='hs-sel'>→</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span> <span class='hs-sel'>→</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span>
<a name="line-53"></a><span class='hs-layout'>(</span><span class='hs-sel'>⧺</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varop'>++</span><span class='hs-layout'>)</span>
<a name="line-54"></a><span class='hs-comment'>{-# INLINE (⧺) #-}</span>
<a name="line-55"></a>
<a name="line-56"></a><span class='hs-comment'>{-|
<a name="line-57"></a>(&#x2208;) = 'elem'
<a name="line-58"></a>
<a name="line-59"></a>U+2208, ELEMENT OF
<a name="line-60"></a>-}</span>
<a name="line-61"></a><span class='hs-layout'>(</span><span class='hs-sel'>∈</span><span class='hs-layout'>)</span> <span class='hs-sel'>∷</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>α</span> <span class='hs-sel'>⇒</span> <span class='hs-varid'>α</span> <span class='hs-sel'>→</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span> <span class='hs-sel'>→</span> <span class='hs-conid'>Bool</span>
<a name="line-62"></a><span class='hs-layout'>(</span><span class='hs-sel'>∈</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>elem</span>
<a name="line-63"></a><span class='hs-comment'>{-# INLINE (∈) #-}</span>
<a name="line-64"></a>
<a name="line-65"></a><span class='hs-comment'>{-|
<a name="line-66"></a>(&#x220B;) = 'flip' (&#x2208;)
<a name="line-67"></a>
<a name="line-68"></a>U+220B, CONTAINS AS MEMBER
<a name="line-69"></a>-}</span>
<a name="line-70"></a><span class='hs-layout'>(</span><span class='hs-sel'>∋</span><span class='hs-layout'>)</span> <span class='hs-sel'>∷</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>α</span> <span class='hs-sel'>⇒</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span> <span class='hs-sel'>→</span> <span class='hs-varid'>α</span> <span class='hs-sel'>→</span> <span class='hs-conid'>Bool</span>
<a name="line-71"></a><span class='hs-layout'>(</span><span class='hs-sel'>∋</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>flip</span> <span class='hs-layout'>(</span><span class='hs-sel'>∈</span><span class='hs-layout'>)</span>
<a name="line-72"></a><span class='hs-comment'>{-# INLINE (∋) #-}</span>
<a name="line-73"></a>
<a name="line-74"></a><span class='hs-comment'>{-|
<a name="line-75"></a>(&#x2209;) = 'notElem'
<a name="line-76"></a>
<a name="line-77"></a>U+2209, NOT AN ELEMENT OF
<a name="line-78"></a>-}</span>
<a name="line-79"></a><span class='hs-layout'>(</span><span class='hs-sel'>∉</span><span class='hs-layout'>)</span> <span class='hs-sel'>∷</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>α</span> <span class='hs-sel'>⇒</span> <span class='hs-varid'>α</span> <span class='hs-sel'>→</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span> <span class='hs-sel'>→</span> <span class='hs-conid'>Bool</span>
<a name="line-80"></a><span class='hs-layout'>(</span><span class='hs-sel'>∉</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>notElem</span>
<a name="line-81"></a><span class='hs-comment'>{-# INLINE (∉) #-}</span>
<a name="line-82"></a>
<a name="line-83"></a><span class='hs-comment'>{-|
<a name="line-84"></a>(&#x220C;) = 'flip' (&#x2209;)
<a name="line-85"></a>
<a name="line-86"></a>U+220C, DOES NOT CONTAIN AS MEMBER
<a name="line-87"></a>-}</span>
<a name="line-88"></a><span class='hs-layout'>(</span><span class='hs-sel'>∌</span><span class='hs-layout'>)</span> <span class='hs-sel'>∷</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>α</span> <span class='hs-sel'>⇒</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span> <span class='hs-sel'>→</span> <span class='hs-varid'>α</span> <span class='hs-sel'>→</span> <span class='hs-conid'>Bool</span>
<a name="line-89"></a><span class='hs-layout'>(</span><span class='hs-sel'>∌</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>flip</span> <span class='hs-layout'>(</span><span class='hs-sel'>∉</span><span class='hs-layout'>)</span>
<a name="line-90"></a><span class='hs-comment'>{-# INLINE (∌) #-}</span>
<a name="line-91"></a>
<a name="line-92"></a><span class='hs-comment'>{-|
<a name="line-93"></a>(&#x222A;) = 'union'
<a name="line-94"></a>
<a name="line-95"></a>U+222A, UNION
<a name="line-96"></a>-}</span>
<a name="line-97"></a><span class='hs-layout'>(</span><span class='hs-sel'>∪</span><span class='hs-layout'>)</span> <span class='hs-sel'>∷</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>α</span> <span class='hs-sel'>⇒</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span> <span class='hs-sel'>→</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span> <span class='hs-sel'>→</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span>
<a name="line-98"></a><span class='hs-layout'>(</span><span class='hs-sel'>∪</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>union</span>
<a name="line-99"></a><span class='hs-comment'>{-# INLINE (∪) #-}</span>
<a name="line-100"></a>
<a name="line-101"></a><span class='hs-comment'>{-|
<a name="line-102"></a>(&#x2216;) = ('\\')
<a name="line-103"></a>
<a name="line-104"></a>U+2216, SET MINUS
<a name="line-105"></a>-}</span>
<a name="line-106"></a><span class='hs-layout'>(</span><span class='hs-sel'>∖</span><span class='hs-layout'>)</span> <span class='hs-sel'>∷</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>α</span> <span class='hs-sel'>⇒</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span> <span class='hs-sel'>→</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span> <span class='hs-sel'>→</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span>
<a name="line-107"></a><span class='hs-layout'>(</span><span class='hs-sel'>∖</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varop'>\\</span><span class='hs-layout'>)</span>
<a name="line-108"></a><span class='hs-comment'>{-# INLINE (∖) #-}</span>
<a name="line-109"></a>
<a name="line-110"></a><span class='hs-comment'>{-|
<a name="line-111"></a>Symmetric difference
<a name="line-112"></a>
<a name="line-113"></a>a &#x2206; b = (a &#x2216; b) &#x222A; (b &#x2216; a)
<a name="line-114"></a>
<a name="line-115"></a>U+2206, INCREMENT
<a name="line-116"></a>-}</span>
<a name="line-117"></a><span class='hs-layout'>(</span><span class='hs-sel'>∆</span><span class='hs-layout'>)</span> <span class='hs-sel'>∷</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>α</span> <span class='hs-sel'>⇒</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span> <span class='hs-sel'>→</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span> <span class='hs-sel'>→</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span>
<a name="line-118"></a><a name="a"></a><span class='hs-definition'>a</span> <span class='hs-sel'>∆</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-sel'>∖</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-sel'>∪</span> <span class='hs-layout'>(</span><span class='hs-varid'>b</span> <span class='hs-sel'>∖</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-119"></a><span class='hs-comment'>{-# INLINE (∆) #-}</span>
<a name="line-120"></a>
<a name="line-121"></a><span class='hs-comment'>{-|
<a name="line-122"></a>(&#x2229;) = 'intersect'
<a name="line-123"></a>
<a name="line-124"></a>U+2229, INTERSECTION
<a name="line-125"></a>-}</span>
<a name="line-126"></a><span class='hs-layout'>(</span><span class='hs-sel'>∩</span><span class='hs-layout'>)</span> <span class='hs-sel'>∷</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>α</span> <span class='hs-sel'>⇒</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span> <span class='hs-sel'>→</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span> <span class='hs-sel'>→</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>α</span><span class='hs-keyglyph'>]</span>
<a name="line-127"></a><span class='hs-layout'>(</span><span class='hs-sel'>∩</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>intersect</span>
<a name="line-128"></a><span class='hs-comment'>{-# INLINE (∩) #-}</span>
</pre></body>
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