Hey! Ever since I graduated and started working in KL, I always wish to have my own place. But owning a property in the city centre is like next to never or just a dream. ✨✨
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If you are going through the same situation, fret not. I just found an affordable place in the city on top of that its accessible to public transport. It’s none other than Astrum Ampang, a integrated development by Setia Awan Group. 🤩🤩
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Can you imagine owning a urban smart property with a monthly instalment of RM8XX only. Now owning your first property at a young age is no longer a dream. 🤗🤗
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Astrum Ampang is the first SOHO Transit in Malaysia strategically located in the heart of KL City which offers accessibility, convenience, affordability and urban living. 😍😍
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Check out more info and the Top 7 Reasons Why Astrum Ampang is Ideal for Young Adults on my blog (link in the comment box)
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Xavier Mah Consultancy #astrumampang #setiaawan #xmconsultancy #sohotransit #ampang #soho #kl #igmy #kellylifestyle
同時也有63部Youtube影片,追蹤數超過7萬的網紅chairman,也在其Youtube影片中提到,坐輪椅出門只能常常擔心沒有無障礙廁所而懶得出門甚至不敢出門??? 難道坐輪椅出門只能尿褲子?! 來看看哪裡會有廁所吧~ 其實不只有身障者會使用到無障礙廁所 許多的人也會使用到無障礙廁所 所以相信設立無障礙廁所會是可以讓社會更往前走的事情 不管你是否同意我的觀點都歡迎下方留言告訴我你的想法 本影...
「accessibility」的推薦目錄:
- 關於accessibility 在 Facebook 的精選貼文
- 關於accessibility 在 Engadget Facebook 的最讚貼文
- 關於accessibility 在 Taipei Ethereum Meetup Facebook 的最讚貼文
- 關於accessibility 在 chairman Youtube 的最佳貼文
- 關於accessibility 在 chairman Youtube 的精選貼文
- 關於accessibility 在 chairman Youtube 的精選貼文
- 關於accessibility 在 Facebook Accessibility - Home 的評價
accessibility 在 Engadget Facebook 的最讚貼文
Google has also released a new accessibility app and updated Lookout.
accessibility 在 Taipei Ethereum Meetup Facebook 的最讚貼文
📜 [專欄新文章] Gas Efficient Card Drawing in Solidity
✍️ Ping Chen
📥 歡迎投稿: https://medium.com/taipei-ethereum-meetup #徵技術分享文 #使用心得 #教學文 #medium
Assign random numbers as the index of newly minted NFTs
Scenario
The fun of generative art NFT projects depends on randomness. The industry standard is “blind box”, where both the images’ serial number and the NFTs’ index are predetermined but will be shifted randomly when the selling period ends. (They call it “reveal”) This approach effectively solves the randomness issue. However, it also requires buyers to wait until the campaign terminates. What if buyers want to know the exact card right away? We’ll need a reliable onchain card drawing solution.
The creator of Astrogator🐊 isn’t a fan of blind boxes; instead, it thinks unpacking cards right after purchase is more interesting.
Spec
When initializing this NFT contract, the creator will determine the total supply of it. And there will be an iterable function that is randomly picking a number from the remaining pool. The number must be in range and must not collide with any existing ones.
Our top priority is accessibility/gas efficiency. Given that gas cost on Ethereum is damn high nowadays, we need an elegant algorithm to control gas expanse at an acceptable range.
Achieving robust randomness isn’t the primary goal here. We assume there’s no strong financial incentive to cheat, so the RNG isn’t specified. Implementers can bring their own source of randomness that they think is good enough.
Implementation
Overview
The implementation is pretty short and straightforward. Imagine there’s an array that contains all remaining(unsold) cards. When drawIndex() is called, it generates a (uniform) random seed to draw a card from the array, shortens the array, and returns the selected card.
Algorithm
Drawing X cards from a deck with the same X amount of cards is equal to shuffling the deck and dealing them sequentially. It’s not a surprise that our algorithm is similar to random shuffling, and the only difference is turning that classic algo into an interactive version.
A typical random shuffle looks like this: for an array with N elements, you randomly pick a number i in (0,N), swap array[0] and array[i], then choose another number i in (1,N), swap array[1] and array[i], and so on. Eventually, you’ll get a mathematically random array in O(N) time.
So, the concept of our random card dealing is the same. When a user mints a new card, the smart contract picks a number in the array as NFT index, then grabs a number from the tail to fill the vacancy, in order to keep the array continuous.
Tweak
Furthermore, as long as the space of the NFT index is known, we don’t need to declare/initialize an array(which is super gas-intensive). Instead, assume there’s such an array that the n-th element is n, we don’t actually initialize it (so it is an array only contains “0”) until the rule is broken.
For the convenience of explanation, let’s call that mapping cache. If cache[i] is empty, it should be interpreted as i instead of 0. On the other hand, when a number is chosen and used, we’ll need to fill it up with another unused number. An intuitive method is to pick a number from the end of the array, since the length of the array is going to decrease by 1.
By doing so, the gas cost in the worst-case scenario is bound to be constant.
Performance and limitation
Comparing with the normal ascending index NFT minting, our random NFT implementation requires two extra SSTORE and one extra SLOAD, which cost 12600 ~ 27600 (5000+20000+2600) excess gas per token minted.
Theoretically, any instantly generated onchain random number is vulnerable. We can restrict contract interaction to mitigate risk. The mitigation is far from perfect, but it is the tradeoff that we have to accept.
ping.eth
Gas Efficient Card Drawing in Solidity was originally published in Taipei Ethereum Meetup on Medium, where people are continuing the conversation by highlighting and responding to this story.
👏 歡迎轉載分享鼓掌
accessibility 在 chairman Youtube 的最佳貼文
坐輪椅出門只能常常擔心沒有無障礙廁所而懶得出門甚至不敢出門???
難道坐輪椅出門只能尿褲子?!
來看看哪裡會有廁所吧~
其實不只有身障者會使用到無障礙廁所
許多的人也會使用到無障礙廁所
所以相信設立無障礙廁所會是可以讓社會更往前走的事情
不管你是否同意我的觀點都歡迎下方留言告訴我你的想法
本影片由教育部大學社會責任計畫、
臺北醫學大學USR輔助科技點亮身障族群生活計畫支助拍攝
計畫主持人:陳適卿教授
共同主持人:彭志維教授
協同主持人:陳弘洲助理教授
特別感謝TINA以及ANDY協助拍攝
工作合作請洽:chairmanleoho@gmail.com
chairman的instagram: https://instagram.com/aka.chairman?igshid=1mqu9z1qlnk2z
chairman的facebook: https://www.facebook.com/Chairman%E6%A4%85%E4%BA%BA-100705971605685/?ref=settings
chairman的youtube頻道: https://www.youtube.com/channel/UCRhaAbtD6vFoE71FljSQFOA
accessibility 在 chairman Youtube 的精選貼文
棒球、壘球可以說是台灣的國球
在紅土草地輪椅推都推不動
還打屁阿!!
所以坐輪椅後是不是就不能打了呢?
那就來看看到底輪椅壘球是怎麼進行的吧!
2028讓我們一起挺進帕運
而這次輪椅壘球課程也是全國首創首次的正式課程
很高興可以邀請到五股國小最美的王逸綺教練來擔任指導
謝謝Tina一起來打輪椅壘球
也特別謝謝語彤姊和王逸綺教練還有雅民姊以及參加輪椅壘球課程的各位,謝謝各位配合拍攝,希望各位對身障運動有興趣的都歡迎去【新北市輪椅夢公園】FB按讚追蹤報名,讓自己多運動提升自己的身心靈
工作合作請洽:chairmanleoho@gmail.com
chairman的instagram: https://instagram.com/aka.chairman?igshid=1mqu9z1qlnk2z
chairman的facebook: https://www.facebook.com/Chairman%E6%A4%85%E4%BA%BA-100705971605685/?ref=settings
chairman的youtube頻道: https://www.youtube.com/channel/UCRhaAbtD6vFoE71FljSQFOA
影片使用Insta360 ONE X2所拍攝
購買連結:https://www.insta360.com/sal/one_x2?insrc=INR9I9H
accessibility 在 chairman Youtube 的精選貼文
永不放棄的夢想
夢想是由自己決定自己實現的
任何人都有實現夢想的權利
奧運結束了,
但帕運才正要開始,
帕運是什麼? 帕運有什麼項目?
台灣又有幾位為國爭光的選手?
讓我來為你一一解說~
06:03
十位代表台灣的帕運選手
健力項目:
#林亞璇
桌球項目:
#盧碧春
#程銘志
#田曉雯
#林姿妤
柔道項目:
#李凱琳
田徑項目:
#楊川輝
#劉雅婷
羽球項目:
#方振宇
游泳項目:
#陳亮達
帕運加油!!!!!!!!!!!!!!!!!!!!
10:27
記得8/24今晚18:50鎖定愛爾達電視台/公視一起為我們的帕運選手加油!!!
動畫短片Animation x Paralympic:誰是你的英雄?:
https://www3.nhk.or.jp/nhkworld/zt/ondemand/program/video/anipara/?type=tvEpisode&
紀錄片《帕奧精神:鳳凰高飛》:
https://www.netflix.com/title/81122408
工作合作請洽:chairmanleoho@gmail.com
chairman的instagram: https://instagram.com/aka.chairman?igshid=1mqu9z1qlnk2z
chairman的facebook: https://www.facebook.com/Chairman%E6%A4%85%E4%BA%BA-100705971605685/?ref=settings
chairman的youtube頻道: https://www.youtube.com/channel/UCRhaAbtD6vFoE71FljSQFOA
accessibility 在 Facebook Accessibility - Home 的推薦與評價
Facebook Accessibility. 117698 likes · 459 talking about this. Facebook is committed to creating a great experience for all people. Learn about the... ... <看更多>