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<title>2020\day12.nim</title>
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<span><a href="..">🏡</a></span>
<span><code>2020\day12.nim</code></span>
<span><a href="https://github.com/pietroppeter/adventofnim"><svg aria-hidden="true" width="1.2em" height="1.2em" style="vertical-align: middle; fill: #fff" preserveAspectRatio="xMidYMid meet" viewBox="0 0 16 16"><path fill-rule="evenodd" d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27.68 0 1.36.09 2 .27 1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.013 8.013 0 0016 8c0-4.42-3.58-8-8-8z"></path></svg></a></span>
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<h2>2020, Day 12: Rain risk ☔ ⛴</h2>
<p>Another classic AOC in moving according to directions.
Nice change of specs from part1 to part2,
but I just added a proc overload and I was good to go
(although my "legacy" Enum names do not really shine in part2).
I did implement the bare minimum (while being my usual verbose,
I am sure other people have much more synthetic solutions)
and got away with it very quick.</p>
<p>As for imports today is just one. Yep <code>parseEnum</code> and <code>parseInt</code>
are in <code>strutils</code> and not in <code>parseutils</code>.
<code>parseutils</code> contains parse functions that return an <code>int</code>.</p>
<pre><code class="nim hljs"><span class="hljs-keyword">import</span>
strutils</code></pre>
<p>All my types below. Using Vec2 both for pos and dir although I could go fancy and use a distinct UnitVec2</p>
<pre><code class="nim hljs"><span class="hljs-keyword">type</span>
<span class="hljs-type">Vec2</span> = <span class="hljs-keyword">tuple</span>[x, y: <span class="hljs-built_in">int</span>]
<span class="hljs-type">Ship</span> = <span class="hljs-keyword">object</span>
pos: <span class="hljs-type">Vec2</span>
dir: <span class="hljs-type">Vec2</span> <span class="hljs-comment">## it could be a distinct type (UnitVec2)</span>
<span class="hljs-type">InstructionKind</span> = <span class="hljs-keyword">enum</span>
goNorth = <span class="hljs-string">"N"</span>, goEast = <span class="hljs-string">"E"</span>, goSouth = <span class="hljs-string">"S"</span>, goWest = <span class="hljs-string">"W"</span>, goForward = <span class="hljs-string">"F"</span>,
rotLeft = <span class="hljs-string">"L"</span>, rotRight = <span class="hljs-string">"R"</span> <span class="hljs-comment">## here I am breaking from naming convention of enums</span>
<span class="hljs-type">Instruction</span> = <span class="hljs-keyword">object</span>
kind: <span class="hljs-type">InstructionKind</span>
val: <span class="hljs-built_in">int</span></code></pre>
<p>template will be useful between example and input and also for part2</p>
<pre><code class="nim hljs"><span class="hljs-keyword">var</span> ship: <span class="hljs-type">Ship</span>
<span class="hljs-keyword">template</span> resetShip() =
ship.pos = (<span class="hljs-number">0</span>, <span class="hljs-number">0</span>)
ship.dir = (<span class="hljs-number">1</span>, <span class="hljs-number">0</span>)
resetShip</code></pre>
<p>no need to come up with fancy names. <code>parse</code> is fine.</p>
<pre><code class="nim hljs"><span class="hljs-keyword">proc</span> parse(text: <span class="hljs-built_in">string</span>): <span class="hljs-built_in">seq</span>[<span class="hljs-type">Instruction</span>] =
<span class="hljs-keyword">var</span> instr: <span class="hljs-type">Instruction</span>
<span class="hljs-keyword">for</span> line <span class="hljs-keyword">in</span> text.splitLines:
instr.kind = parseEnum[<span class="hljs-type">InstructionKind</span>](line[<span class="hljs-number">0</span> .. <span class="hljs-number">0</span>])
instr.val = parseInt(line[<span class="hljs-number">1</span> .. ^<span class="hljs-number">1</span>])
<span class="hljs-literal">result</span>.add instr
<span class="hljs-keyword">let</span> example = <span class="hljs-string">"""F10
N3
F7
R90
F11"""</span>
<span class="hljs-keyword">echo</span> parse example</code></pre>
<pre><samp>@[(kind: F, val: 10), (kind: N, val: 3), (kind: F, val: 7), (kind: R, val: 90), (kind: F, val: 11)]</samp></pre>
<p>my set of functions for Vec2, I will support only left rotation...</p>
<pre><code class="nim hljs"><span class="hljs-keyword">func</span> `+`(v, w: <span class="hljs-type">Vec2</span>): <span class="hljs-type">Vec2</span> =
(v.x + w.x, v.y + w.y)
<span class="hljs-keyword">func</span> `*`(s: <span class="hljs-built_in">int</span>; v: <span class="hljs-type">Vec2</span>): <span class="hljs-type">Vec2</span> =
(s * v.x, s * v.y)
<span class="hljs-keyword">func</span> rotL(v: <span class="hljs-type">Vec2</span>; deg: <span class="hljs-built_in">int</span>): <span class="hljs-type">Vec2</span> =
<span class="hljs-keyword">case</span> deg
<span class="hljs-keyword">of</span> <span class="hljs-number">180</span>, -<span class="hljs-number">180</span>:
(-v.x, -v.y)
<span class="hljs-keyword">of</span> <span class="hljs-number">90</span>, -<span class="hljs-number">270</span>:
(-v.y, v.x) <span class="hljs-comment">## (1, 0) -> (0, 1) -> (-1, 0)</span>
<span class="hljs-keyword">of</span> -<span class="hljs-number">90</span>, <span class="hljs-number">270</span>:
(v.y, -v.x) <span class="hljs-comment">## (1, 0) -> (0, -1) -> (-1, 0)</span>
<span class="hljs-keyword">else</span>:
debugEcho <span class="hljs-string">"ERROR not supported"</span>
(<span class="hljs-number">0</span>, <span class="hljs-number">0</span>)
<span class="hljs-keyword">template</span> `+=`(a, b: <span class="hljs-built_in">untyped</span>) =
a = a + b
<span class="hljs-keyword">func</span> manhattan(ship: <span class="hljs-type">Ship</span>): <span class="hljs-built_in">int</span> =
<span class="hljs-comment">## I could do it for a Vec2 but I will use it only for the ship, so...</span>
abs(ship.pos.x) + abs(ship.pos.y)</code></pre>
<p>heart of the solution is this, rather straightforward now:</p>
<pre><code class="nim hljs"><span class="hljs-keyword">proc</span> move(ship: <span class="hljs-keyword">var</span> <span class="hljs-type">Ship</span>; instr: <span class="hljs-type">Instruction</span>) =
<span class="hljs-keyword">case</span> instr.kind
<span class="hljs-keyword">of</span> goForward:
ship.pos += instr.val * ship.dir
<span class="hljs-keyword">of</span> goNorth:
ship.pos += instr.val * (<span class="hljs-number">0</span>, <span class="hljs-number">1</span>)
<span class="hljs-keyword">of</span> goEast:
ship.pos += instr.val * (<span class="hljs-number">1</span>, <span class="hljs-number">0</span>)
<span class="hljs-keyword">of</span> goSouth:
ship.pos += instr.val * (<span class="hljs-number">0</span>, -<span class="hljs-number">1</span>)
<span class="hljs-keyword">of</span> goWest:
ship.pos += instr.val * (-<span class="hljs-number">1</span>, <span class="hljs-number">0</span>)
<span class="hljs-keyword">of</span> rotLeft:
ship.dir = ship.dir.rotL(instr.val)
<span class="hljs-keyword">of</span> rotRight:
ship.dir = ship.dir.rotL(-instr.val)</code></pre>
<p>Let's move according to example instructions, printing out in case I need to debug</p>
<pre><code class="nim hljs"><span class="hljs-keyword">echo</span> ship
<span class="hljs-keyword">for</span> instr <span class="hljs-keyword">in</span> parse(example):
ship.move instr
<span class="hljs-keyword">echo</span> <span class="hljs-string">"-> "</span>, instr
<span class="hljs-keyword">echo</span> ship
<span class="hljs-keyword">echo</span> manhattan ship <span class="hljs-comment">## 25</span></code></pre>
<pre><samp>(pos: (x: 0, y: 0), dir: (x: 1, y: 0))
-> (kind: F, val: 10)
(pos: (x: 10, y: 0), dir: (x: 1, y: 0))
-> (kind: N, val: 3)
(pos: (x: 10, y: 3), dir: (x: 1, y: 0))
-> (kind: F, val: 7)
(pos: (x: 17, y: 3), dir: (x: 1, y: 0))
-> (kind: R, val: 90)
(pos: (x: 17, y: 3), dir: (x: 0, y: -1))
-> (kind: F, val: 11)
(pos: (x: 17, y: -8), dir: (x: 0, y: -1))
25</samp></pre>
<p>all good, now the input!</p>
<pre><code class="nim hljs"><span class="hljs-keyword">let</span> input = <span class="hljs-string">"2020/input12.txt"</span>.readFile
resetShip
<span class="hljs-keyword">for</span> instr <span class="hljs-keyword">in</span> parse(input):
ship.move instr
<span class="hljs-keyword">echo</span> manhattan ship <span class="hljs-comment">## 1601</span></code></pre>
<pre><samp>1601</samp></pre>
<p>That's the right answer! You are <em class="star">one gold star</em> closer to saving your vacation.</p>
<h3>Part2</h3>
<p>I just add a waypoint var and add overload for <code>move</code>:</p>
<pre><code class="nim hljs"><span class="hljs-keyword">var</span> waypoint: <span class="hljs-type">Vec2</span>
<span class="hljs-keyword">template</span> resetWaypoint() =
waypoint = (<span class="hljs-number">10</span>, <span class="hljs-number">1</span>)
resetWaypoint
<span class="hljs-keyword">proc</span> move(ship: <span class="hljs-keyword">var</span> <span class="hljs-type">Ship</span>; waypoint: <span class="hljs-keyword">var</span> <span class="hljs-type">Vec2</span>; instr: <span class="hljs-type">Instruction</span>) =
<span class="hljs-keyword">case</span> instr.kind
<span class="hljs-keyword">of</span> goForward:
ship.pos += instr.val * waypoint
<span class="hljs-keyword">of</span> goNorth:
waypoint += instr.val * (<span class="hljs-number">0</span>, <span class="hljs-number">1</span>)
<span class="hljs-keyword">of</span> goEast:
waypoint += instr.val * (<span class="hljs-number">1</span>, <span class="hljs-number">0</span>)
<span class="hljs-keyword">of</span> goSouth:
waypoint += instr.val * (<span class="hljs-number">0</span>, -<span class="hljs-number">1</span>)
<span class="hljs-keyword">of</span> goWest:
waypoint += instr.val * (-<span class="hljs-number">1</span>, <span class="hljs-number">0</span>)
<span class="hljs-keyword">of</span> rotLeft:
waypoint = waypoint.rotL(instr.val)
<span class="hljs-keyword">of</span> rotRight:
waypoint = waypoint.rotL(-instr.val)
resetShip
<span class="hljs-keyword">echo</span> ship
<span class="hljs-keyword">for</span> instr <span class="hljs-keyword">in</span> parse(example):
ship.move(waypoint, instr)
<span class="hljs-keyword">echo</span> <span class="hljs-string">"W: "</span>, waypoint
<span class="hljs-keyword">echo</span> <span class="hljs-string">"-> "</span>, instr
<span class="hljs-keyword">echo</span> ship
<span class="hljs-keyword">echo</span> manhattan ship
resetShip
resetWaypoint
<span class="hljs-keyword">for</span> instr <span class="hljs-keyword">in</span> parse(input):
ship.move(waypoint, instr)
<span class="hljs-keyword">echo</span> manhattan ship</code></pre>
<pre><samp>(pos: (x: 0, y: 0), dir: (x: 1, y: 0))
W: (x: 10, y: 1)
-> (kind: F, val: 10)
(pos: (x: 100, y: 10), dir: (x: 1, y: 0))
W: (x: 10, y: 4)
-> (kind: N, val: 3)
(pos: (x: 100, y: 10), dir: (x: 1, y: 0))
W: (x: 10, y: 4)
-> (kind: F, val: 7)
(pos: (x: 170, y: 38), dir: (x: 1, y: 0))
W: (x: 4, y: -10)
-> (kind: R, val: 90)
(pos: (x: 170, y: 38), dir: (x: 1, y: 0))
W: (x: 4, y: -10)
-> (kind: F, val: 11)
(pos: (x: 214, y: -72), dir: (x: 1, y: 0))
286
13340</samp></pre>
<p>That's the right answer! You are <em class="star">one gold star</em> closer to saving your vacation.</p>
<p>I was a bit nervous about this day 12 since last two years day 12 is where
I started to lag behind.
Instead it was a piece of cake 🍰 and my fastest ⚡ submission with no bugs 🐞.</p>
<p>I probably am becoming a little better at this, but I do have a feeling like
this year is slightly easier, maybe Eric is cutting us some slack because of, you know, 2020...</p>
<p>Of course I will regret just saying this tomorrow and the next days... 😱</p>
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<pre><code class="nim hljs"><span class="hljs-keyword">import</span> nimib, animu, nimoji
nbInit
nbText: <span class="hljs-string">"""## 2020, Day 12: Rain risk :umbrella: :ferry:
Another classic AOC in moving according to directions.
Nice change of specs from part1 to part2,
but I just added a proc overload and I was good to go
(although my "legacy" Enum names do not really shine in part2).
I did implement the bare minimum (while being my usual verbose,
I am sure other people have much more synthetic solutions)
and got away with it very quick.
As for imports today is just one. Yep `parseEnum` and `parseInt`
are in `strutils` and not in `parseutils`.
`parseutils` contains parse functions that return an `int`.
"""</span>.emojize
nbCode:
<span class="hljs-keyword">import</span> strutils
nbText: <span class="hljs-string">"All my types below. Using Vec2 both for pos and dir although I could go fancy and use a distinct UnitVec2"</span>
nbCode:
<span class="hljs-keyword">type</span>
<span class="hljs-type">Vec2</span> = <span class="hljs-keyword">tuple</span>[x, y: <span class="hljs-built_in">int</span>]
<span class="hljs-type">Ship</span> = <span class="hljs-keyword">object</span>
pos: <span class="hljs-type">Vec2</span>
dir: <span class="hljs-type">Vec2</span> <span class="hljs-comment">## it could be a distinct type (UnitVec2)</span>
<span class="hljs-type">InstructionKind</span> = <span class="hljs-keyword">enum</span>
goNorth = <span class="hljs-string">"N"</span>, goEast = <span class="hljs-string">"E"</span>, goSouth = <span class="hljs-string">"S"</span>, goWest = <span class="hljs-string">"W"</span>,
goForward = <span class="hljs-string">"F"</span>, rotLeft = <span class="hljs-string">"L"</span>, rotRight = <span class="hljs-string">"R"</span>
<span class="hljs-comment">## here I am breaking from naming convention of enums</span>
<span class="hljs-type">Instruction</span> = <span class="hljs-keyword">object</span>
kind: <span class="hljs-type">InstructionKind</span>
val: <span class="hljs-built_in">int</span>
nbText: <span class="hljs-string">"template will be useful between example and input and also for part2"</span>
nbCode:
<span class="hljs-keyword">var</span> ship: <span class="hljs-type">Ship</span>
<span class="hljs-keyword">template</span> resetShip =
ship.pos = (<span class="hljs-number">0</span>, <span class="hljs-number">0</span>)
ship.dir = (<span class="hljs-number">1</span>, <span class="hljs-number">0</span>)
resetShip
nbText: <span class="hljs-string">"no need to come up with fancy names. `parse` is fine."</span>
nbCode:
<span class="hljs-keyword">proc</span> parse(text: <span class="hljs-built_in">string</span>): <span class="hljs-built_in">seq</span>[<span class="hljs-type">Instruction</span>] =
<span class="hljs-keyword">var</span> instr: <span class="hljs-type">Instruction</span>
<span class="hljs-keyword">for</span> line <span class="hljs-keyword">in</span> text.splitLines:
instr.kind = parseEnum[<span class="hljs-type">InstructionKind</span>](line[<span class="hljs-number">0.</span>.<span class="hljs-number">0</span>])
instr.val = parseInt(line[<span class="hljs-number">1</span> .. ^<span class="hljs-number">1</span>])
<span class="hljs-literal">result</span>.add instr
<span class="hljs-keyword">let</span> example = <span class="hljs-string">"""F10
N3
F7
R90
F11"""</span>
<span class="hljs-keyword">echo</span> parse example
nbText: <span class="hljs-string">"my set of functions for Vec2, I will support only left rotation..."</span>
nbCode:
<span class="hljs-keyword">func</span> `+`(v,w: <span class="hljs-type">Vec2</span>): <span class="hljs-type">Vec2</span> = (v.x + w.x, v.y + w.y)
<span class="hljs-keyword">func</span> `*`(s: <span class="hljs-built_in">int</span>, v: <span class="hljs-type">Vec2</span>): <span class="hljs-type">Vec2</span> = (s*v.x, s*v.y)
<span class="hljs-keyword">func</span> rotL(v: <span class="hljs-type">Vec2</span>, deg: <span class="hljs-built_in">int</span>): <span class="hljs-type">Vec2</span> =
<span class="hljs-keyword">case</span> deg:
<span class="hljs-keyword">of</span> <span class="hljs-number">180</span>, -<span class="hljs-number">180</span>:
(-v.x, -v.y)
<span class="hljs-keyword">of</span> <span class="hljs-number">90</span>, -<span class="hljs-number">270</span>:
(-v.y, v.x) <span class="hljs-comment">## (1, 0) -> (0, 1) -> (-1, 0)</span>
<span class="hljs-keyword">of</span> -<span class="hljs-number">90</span>, <span class="hljs-number">270</span>:
(v.y, -v.x) <span class="hljs-comment">## (1, 0) -> (0, -1) -> (-1, 0)</span>
<span class="hljs-keyword">else</span>:
debugEcho <span class="hljs-string">"ERROR not supported"</span>
(<span class="hljs-number">0</span>, <span class="hljs-number">0</span>)
<span class="hljs-keyword">template</span> `+=`(a, b: <span class="hljs-built_in">untyped</span>) =
a = a + b
<span class="hljs-keyword">func</span> manhattan(ship: <span class="hljs-type">Ship</span>): <span class="hljs-built_in">int</span> =
<span class="hljs-comment">## I could do it for a Vec2 but I will use it only for the ship, so...</span>
abs(ship.pos.x) + abs(ship.pos.y)
nbText: <span class="hljs-string">"heart of the solution is this, rather straightforward now:"</span>
nbCode:
<span class="hljs-keyword">proc</span> move(ship: <span class="hljs-keyword">var</span> <span class="hljs-type">Ship</span>, instr: <span class="hljs-type">Instruction</span>) =
<span class="hljs-keyword">case</span> instr.kind:
<span class="hljs-keyword">of</span> goForward:
ship.pos += instr.val*ship.dir
<span class="hljs-keyword">of</span> goNorth:
ship.pos += instr.val*(<span class="hljs-number">0</span>, <span class="hljs-number">1</span>)
<span class="hljs-keyword">of</span> goEast:
ship.pos += instr.val*(<span class="hljs-number">1</span>, <span class="hljs-number">0</span>)
<span class="hljs-keyword">of</span> goSouth:
ship.pos += instr.val*(<span class="hljs-number">0</span>, -<span class="hljs-number">1</span>)
<span class="hljs-keyword">of</span> goWest:
ship.pos += instr.val*(-<span class="hljs-number">1</span>, <span class="hljs-number">0</span>)
<span class="hljs-keyword">of</span> rotLeft:
ship.dir = ship.dir.rotL(instr.val)
<span class="hljs-keyword">of</span> rotRight:
ship.dir = ship.dir.rotL(-instr.val)
nbText: <span class="hljs-string">"Let's move according to example instructions, printing out in case I need to debug"</span>
nbCode:
<span class="hljs-keyword">echo</span> ship
<span class="hljs-keyword">for</span> instr <span class="hljs-keyword">in</span> parse(example):
ship.move instr
<span class="hljs-keyword">echo</span> <span class="hljs-string">"-> "</span>, instr
<span class="hljs-keyword">echo</span> ship
<span class="hljs-keyword">echo</span> manhattan ship <span class="hljs-comment">## 25</span>
nbText: <span class="hljs-string">"all good, now the input!"</span>
nbCode:
<span class="hljs-keyword">let</span> input = <span class="hljs-string">"2020/input12.txt"</span>.readFile
resetShip
<span class="hljs-keyword">for</span> instr <span class="hljs-keyword">in</span> parse(input):
ship.move instr
<span class="hljs-keyword">echo</span> manhattan ship <span class="hljs-comment">## 1601</span>
gotTheStar
nbText: <span class="hljs-string">"### Part2</span><span class="hljs-meta">\n</span><span class="hljs-string">I just add a waypoint var and add overload for `move`:"</span>
nbCode:
<span class="hljs-keyword">var</span> waypoint: <span class="hljs-type">Vec2</span>
<span class="hljs-keyword">template</span> resetWaypoint =
waypoint = (<span class="hljs-number">10</span>, <span class="hljs-number">1</span>)
resetWaypoint
<span class="hljs-keyword">proc</span> move(ship: <span class="hljs-keyword">var</span> <span class="hljs-type">Ship</span>, waypoint: <span class="hljs-keyword">var</span> <span class="hljs-type">Vec2</span>, instr: <span class="hljs-type">Instruction</span>) =
<span class="hljs-keyword">case</span> instr.kind:
<span class="hljs-keyword">of</span> goForward:
ship.pos += instr.val*waypoint
<span class="hljs-keyword">of</span> goNorth:
waypoint += instr.val*(<span class="hljs-number">0</span>, <span class="hljs-number">1</span>)
<span class="hljs-keyword">of</span> goEast:
waypoint += instr.val*(<span class="hljs-number">1</span>, <span class="hljs-number">0</span>)
<span class="hljs-keyword">of</span> goSouth:
waypoint += instr.val*(<span class="hljs-number">0</span>, -<span class="hljs-number">1</span>)
<span class="hljs-keyword">of</span> goWest:
waypoint += instr.val*(-<span class="hljs-number">1</span>, <span class="hljs-number">0</span>)
<span class="hljs-keyword">of</span> rotLeft:
waypoint = waypoint.rotL(instr.val)
<span class="hljs-keyword">of</span> rotRight:
waypoint = waypoint.rotL(-instr.val)
resetShip
<span class="hljs-keyword">echo</span> ship
<span class="hljs-keyword">for</span> instr <span class="hljs-keyword">in</span> parse(example):
ship.move(waypoint, instr)
<span class="hljs-keyword">echo</span> <span class="hljs-string">"W: "</span>, waypoint
<span class="hljs-keyword">echo</span> <span class="hljs-string">"-> "</span>, instr
<span class="hljs-keyword">echo</span> ship
<span class="hljs-keyword">echo</span> manhattan ship
resetShip
resetWaypoint
<span class="hljs-keyword">for</span> instr <span class="hljs-keyword">in</span> parse(input):
ship.move(waypoint, instr)
<span class="hljs-keyword">echo</span> manhattan ship
gotTheStar
nbText: <span class="hljs-string">"""
I was a bit nervous about this day 12 since last two years day 12 is where
I started to lag behind.
Instead it was a piece of cake :cake: and my fastest :zap: submission with no bugs :beetle:.
I probably am becoming a little better at this, but I do have a feeling like
this year is slightly easier, maybe Eric is cutting us some slack because of, you know, 2020...
Of course I will regret just saying this tomorrow and the next days... :scream:
"""</span>.emojize
<span class="hljs-comment"># the only error I got today was when compiling after the nimib version:</span>
<span class="hljs-comment"># the usual error on parsing the example (forgot to dedent the multiline)</span>
nbSave
<span class="hljs-comment"># I probably should add to nimib something like the following:</span>
<span class="hljs-comment">#[
nbSaveCode # saves a nim file with just code
nbAddCodeSource # adds to context the content of code blocks (it should be then made available from html for easier extraction)
# in particular all code snippets should have easy pasting of code and you should also have a complete pasting for the whole code snippets
]#</span></code></pre>
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