updated the system to work better with markdown

categories.html

@@ -687,6 +687,34 @@ Haskell types is fractal:</p>
 
 <img src="categories/img/mp/hask-endofunctor.png" alt="Haskell functor representation"/>
 </section>
+<section class="slide">
+<h2 id="non-haskell-hasks-functors">&quot;Non Haskell&quot; Hask's Functors</h2>
+<p>A simple basic example is the \(id_\Hask\) functor. It simply cannot be expressed as a couple (<code>F</code>,<code>fmap</code>) where</p>
+<ul>
+<li><code>F::* -&gt; *</code></li>
+<li><code>fmap :: (a -&gt; b) -&gt; (F a) -&gt; (F b)</code></li>
+</ul>
+<p>Also other degenerated examples:</p>
+<ul>
+<li>F(<code>T</code>)=<code>Int</code></li>
+<li>F(<code>f</code>)=<code>\x-&gt;0</code></li>
+</ul>
+</section>
+<section class="slide">
+<h2 id="also-functor-inside-hask">Also Functor inside \(\Hask\)</h2>
+<p><code>length</code> can be seen as a Functor from the category <code>[a]</code> to <code>Int</code>. More precisely:</p>
+<ul>
+<li>\(\ob{\mathtt{[a]}}=\{∙\}\)</li>
+<li>\(\hom{\mathtt{[a]}}=\mathtt{[a]}\)</li>
+<li>\(∘=\mathtt{(++)}\)</li>
+</ul>
+<p><span class="and">&amp;</span></p>
+<ul>
+<li>\(\ob{\mathtt{Int}}=\{∙\}\)</li>
+<li>\(\hom{\mathtt{Int}}=\mathtt{Int}\)</li>
+<li>\(∘=\mathtt{(+)}\)</li>
+</ul>
+</section>
 <!-- End slides. -->
 
 

categories/30_How/100_Functor_as_boxes.html

@@ -0,0 +1,6 @@
+<h2>Functor as boxes</h2>
+
+<p>Haskell functor can be seen as boxes containing all Haskell types and functions.
+Haskell types is fractal:</p>
+
+<img src="categories/img/mp/hask-endofunctor-objects.png" alt="Haskell functor representation"/>

categories/30_How/110_Non_Haskell_Hask_s_Functors.html

@@ -0,0 +1,11 @@
+<h2 id="non-haskell-hasks-functors">&quot;Non Haskell&quot; Hask's Functors</h2>
+<p>A simple basic example is the \(id_\Hask\) functor. It simply cannot be expressed as a couple (<code>F</code>,<code>fmap</code>) where</p>
+<ul>
+<li><code>F::* -&gt; *</code></li>
+<li><code>fmap :: (a -&gt; b) -&gt; (F a) -&gt; (F b)</code></li>
+</ul>
+<p>Also other degenerated examples:</p>
+<ul>
+<li>F(<code>T</code>)=<code>Int</code></li>
+<li>F(<code>f</code>)=<code>\x-&gt;0</code></li>
+</ul>

categories/30_How/110_Non_Haskell_Hask_s_Functors.md

@@ -0,0 +1,12 @@
+## "Non Haskell" Hask's Functors
+
+A simple basic example is the \\(id\_\\Hask\\) functor.
+It simply cannot be expressed as a couple (`F`,`fmap`) where
+
+- `F::* -> *`
+- `fmap :: (a -> b) -> (F a) -> (F b)`
+
+Also other degenerated examples:
+
+- F(`T`)=`Int`
+- F(`f`)=`\_->0`

categories/30_How/120_Also_Functor_inside_Hask.html

@@ -0,0 +1,13 @@
+<h2 id="also-functor-inside-hask">Also Functor inside \(\Hask\)</h2>
+<p><code>length</code> can be seen as a Functor from the category <code>[a]</code> to <code>Int</code>. More precisely:</p>
+<ul>
+<li>\(\ob{\mathtt{[a]}}=\{∙\}\)</li>
+<li>\(\hom{\mathtt{[a]}}=\mathtt{[a]}\)</li>
+<li>\(∘=\mathtt{(++)}\)</li>
+</ul>
+<p>&amp;</p>
+<ul>
+<li>\(\ob{\mathtt{Int}}=\{∙\}\)</li>
+<li>\(\hom{\mathtt{Int}}=\mathtt{Int}\)</li>
+<li>\(∘=\mathtt{(+)}\)</li>
+</ul>

categories/30_How/120_Also_Functor_inside_Hask.md

@@ -0,0 +1,14 @@
+## Also Functor inside \\(\\Hask\\)
+
+`length` can be seen as a Functor from the category `[a]` to `Int`.
+More precisely:
+
+- \\(\\ob{\\mathtt{[a]}}=\\{∙\\}\\)
+- \\(\\hom{\\mathtt{[a]}}=\\mathtt{[a]}\\)
+- \\(∘=\\mathtt{(++)}\\)
+
+&
+
+- \\(\\ob{\\mathtt{Int}}=\\{∙\\}\\)
+- \\(\\hom{\\mathtt{Int}}=\\mathtt{Int}\\)
+- \\(∘=\\mathtt{(+)}\\)

categories/renameSlideFic.sh

@@ -14,7 +14,7 @@ for rep in ??_*(/); do
     cd $rep
     i=10
     for fic in *.html; do
-        title=$( <$fic grep h2 | sed 's/<[^>]*>//g;s/[^a-zA-Z]/_/g;s/__*/_/g;s/^_//;s/_$//')
+        title=$( <$fic grep h2 | sed 's/<[^>]*>//g;s/&[^;]*;//g;s/[^a-zA-Z]/_/g;s/__*/_/g;s/^_//;s/_$//;')
         if ((i<100)); then
             num="0$i"
         else
@@ -28,6 +28,9 @@ for rep in ??_*(/); do
                 continue
             }
         mv $fic $newfic
+        mdfic=${fic:r}.md
+        newmdfic=${newfic:r}.md
+        [[ -e $mdfic ]] && mv $mdfic $newmdfic
     done
     cd $scriptdir
 done