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IWABUCHI Yu(u)ki (butchi) butchi

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@butchi
butchi / file0.html
Last active August 25, 2017 06:49
ソーシャルボタンまとめ ref: http://qiita.com/butchi_y/items/b365dc7ac4739ac9c74d
<a href="https://twitter.com/share" class="twitter-share-button" data-text="（ここにツイート文言を入れる。data-text属性ごと省けばページタイトルがツイート文言になる）" data-lang="ja">ツイート</a>
<script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs');</script>
@butchi
butchi / twindragon.js
Created December 23, 2015 13:08
ツインドラゴンに関する発見と実装 ref: http://qiita.com/butchi_y/items/4f0bd72f4b322d4943b6
var i, j;
var x = [0];
var y = [0];
var nextX = [];
var nextY = [];
for(j=0; j<4; j++) {
l = x.length-1;
for(i=0; i<x.length; i++) {
nextX[i] = x[i] + 1 - y[l];
nextY[i] = y[i] + x[l];
@butchi
butchi / dashed_grid.js
Created December 22, 2015 15:30
JavaScript本に書いてあった簡単な図形描画をMathematicaで ref: http://qiita.com/butchi_y/items/0c8a1ef9508531569ccf
var res = '\n', i, j;
for(i = 1; i <= 7; i++) {
for(j = 1; j < 15; j++) {
res += (i * j) % 8 ? ' ' : '*';
}
res+= '\n';
}
@butchi
butchi / file1.txt
Last active December 22, 2015 05:40
IDが重複してもページ内ジャンプできるようにする方法 ref: http://qiita.com/butchi_y/items/9a1aa858a6eb64b2ee5e
$('.env-2#p')
@butchi
butchi / fibonacci_word_fractal.nb
Last active December 20, 2015 13:33
フィボナッチ列フラクタル（Mathematicaショートフラクタルシリーズ） ref: http://qiita.com/butchi_y/items/fe0fa7d3e7909ec00210
w = Flatten[Nest[{#, #[[1]]} &, {1, 0}, 20]];
ListPlot[{Re[#], Im[#]} & /@
Accumulate[
Join[
{0},
I^Accumulate[Join[{1}, w*(-1)^Mod[Range[Length[w]], 2]]]
]
],
Joined -> True,
AspectRatio -> Automatic
@butchi
butchi / circle.svg
Last active November 18, 2016 03:02
SVGの作図問題とコードゴルフ ref: http://qiita.com/butchi_y/items/44b35e659bbeeb452d21
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@butchi
butchi / file0.txt
Last active December 23, 2015 13:11
ツインドラゴン（Mathematicaショートフラクタルシリーズ） ref: http://qiita.com/butchi_y/items/6a32ee40c9674d8cb8c6
Graphics[Point[
Transpose[{Re[#], Im[#]} &[
Table[FromDigits[IntegerDigits[k, 2], 1 + I], {k, 0, 1023}]
]]
]]
@butchi
butchi / dragon_normal.nb
Created December 17, 2015 12:38
ドラゴン曲線（Mathematicaショートフラクタルシリーズ） ref: http://qiita.com/butchi_y/items/4aa9a15cdffa40587544
Graphics[Line[
{Re[#], Im[#]} & /@
Join[
{0},
Accumulate[(-1)^(Nest[Join[# + 1, Reverse[#] - 1] &, {0}, 11]/4)]
]
]]
@butchi
butchi / 1-pickup-duplicate.js
Last active November 8, 2023 00:06
DOM上のIDの重複を検出する ref: http://qiita.com/butchi_y/items/8e1312a47826e5ca95a2
(function(){
var idArr=[];
var duplicateIdArr = [];
[].forEach.call(document.querySelectorAll('[id]'), function(elm){
var id = elm.getAttribute('id');
if(idArr.indexOf(id) !== -1) {
duplicateIdArr.push(id);
} else {
idArr.push(id);
}
@butchi
butchi / file1.txt
Created December 16, 2015 13:06
コッホ曲線（Mathematicaショートフラクタルシリーズ） ref: http://qiita.com/butchi_y/items/0e1c015f8c3d6955c88b
generator = {0, Pi/3, -Pi/3, 0};