小羅超重要提醒‼️‼️‼️‼️
先處理 藝Fun券、動滋券、農遊券、客庄券
等等超多額外小額獎金的登記
❤️❤️網址在這邊❤️❤️
https://plus.5000.gov.tw/hpg/webLogin?token=coupon&language=ch
(登記後還需要官方抽獎抽到才算)
圖片轉載風傳媒
同時也有10部Youtube影片,追蹤數超過3萬的網紅Ms Kuan,也在其Youtube影片中提到,Hello everybody! WELCOME BACK TO MY CHANNEL MSKUAN First of all, Merry Christmas everyone! I hope you had a splendid one with friends and family yes...
fun token 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
fun token 在 Lexie's Blog 寫食派 Facebook 的最佳解答
#年輕人就是沉不住氣
一早在各大網站接連當機的肅殺之氣下
為了搶好食券(綁數位才能領)
情急的將五倍券綁了玉山Pi錢包
但我現在非常懊悔ㄚㄚㄚ
今年綁定就不能換,真的很不人性
結果到現在好食券都還沒領完!哭跑...想要的人趕快去申請吧
.
目前看到最優惠的應該是台灣pay吧
而且全聯可用這是讓我最懊悔的地方啊
(但首先你要先通過台灣pay的各種鳥介面與綁定地獄)
.
各位你們說說
都綁了什麼,還是要拿實體券?
.
不管你要領實體還是綁數位,都可以先來這邊勾選加碼券
https://plus.5000.gov.tw/hpg/webLogin?token=coupon&language=ch
都可以先勾啦不用挑
去年我們的藝fun券拿去誠品買書,動滋券去迪卡農買運動用品(今年不能買運動用品…),都很好用喔!
fun token 在 Ms Kuan Youtube 的最佳貼文
Hello everybody! WELCOME BACK TO MY CHANNEL MSKUAN
First of all, Merry Christmas everyone! I hope you had a splendid one with friends and family yesterday and stay safe ?
For this holiday season, we’ve planned some festive shoots for some of my favourite brands including Diptyque, Jo Malone and L’occitane. All of the shoots are so fun and I would like to thank my team for making everything possible!
2020 is great , It’s amazing to have TEAM CHRISTINNA K a gathering and members are growing ?
Besides, my family and I also hosted a little Christmas party for our staff and close friends as a token of appreciation and our way of saying thank you ??
In a nutshell, it’s been a crazy year, but we’re still trying to make the best of it. I hope 2021 will be a better one, sending lots of joy and love to all of you ?
Instagram: http://www.instagram.com/ms_kuan/
Blogger: http://mskuan.com/
Facebook: http://www.facebook.com/christinna.kuan
Thank you for watching. Please subscribe, like & share this video!
fun token 在 Nini Fun Youtube 的最讚貼文
#隔離生活#氣炸鍋#開箱
KouHigh註冊連結:
https://wap.kouhigh.com/Festival/newPeopleInvite1/index.html#/?name=Penny Hsu&customer_id=64026&lang=en
通過我的邀請註冊連結註冊可以享有1%回饋,外加$5抵用卷
折扣碼:Penny5 (買$50減$5)
海底撈:
https://wap.kouhigh.com/en/goodsinfo/12860?token=505fead62b37e1168943622c4bd71e6e5b5a6a1a
韓國辣醬:
https://wap.kouhigh.com/en/goodsinfo/13946?token=505fead62b37e1168943622c4bd71e6e5b5a6a1a
小老闆海苔:
https://wap.kouhigh.com/en/goodsinfo/1404?token=505fead62b37e1168943622c4bd71e6e5b5a6a1a
→諮詢Instagram: Daruma_Penny
https://www.instagram.com/daruma_penny/
→Facebook: NiniFun (@pennyninifun)
https://www.facebook.com/pennyninifun/
→Instagram: Pennicentt
https://www.instagram.com/pennicentt/
→Personal Facebook: Penny Fun
https://www.facebook.com/penny.hsu.39948
→For Business Inquiries ONLY. Please email:
Ninifunsy2@gmail.com
→Camera:
*Canon EOS Rebel T6i
https://amzn.to/2IQgaal
* Canon G7X II (my vlog camera)
https://amzn.to/2LvJBjQ
*Camera Stand (Big one)
https://amzn.to/2IQ6gJW
*Camera Stand (For Vlog)
https://amzn.to/2LzlgK8
→Video editor: Wonder Share & Imovie
THANK YOU FOR WATCHING
謝謝您的觀看
LIKE AND SHARE MY VIDEOS IF YOU DO!
喜歡我的影片可以按讚+分享囉~
Penny XOXO
" I do not own ANY of the soundtrack, property and rights for audio go to (band/singer name)"
fun token 在 Fun With Oprah Youtube 的精選貼文
排骨的食譜可以參考我姊的,非減醣人可以用炸的超好吃
https://chrysie.pixnet.net/blog/post/119396272
其實大部份的菜我都是睡前想的
然後亂調味,反正做菜就是太淡加調味、太重加水這樣(笑
––––––––––––––––––––––––––––––
Token (Feat. Cloe Sutherland) by Fernweh https://soundcloud.com/fernwehbeats
Creative Commons — Attribution-NoDerivs 3.0 Unported — CC BY-ND 3.0
Free Download / Stream: https://bit.ly/token-feat-cloe-suther...
Music promoted by Audio Library https://youtu.be/WyRs5liCLgU
––––––––––––––––––––––––––––––
🎵 Track Info:
Title: Token (Feat. Cloe Sutherland) by Fernweh
Genre and Mood: R&B & Soul + Calm
––––––––––––––––––––––––––––––
Coming Home (ft Ollie Wade) by Niwel & Altero
https://soundcloud.com/niwel-516897768
https://soundcloud.com/altero-music
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
Free Download / Stream: https://bit.ly/-coming-home
Music promoted by Audio Library https://youtu.be/VEB9j346fPE
––––––––––––––––––––––––––––––
🎵 Track Info:
Title: Coming Home (ft Ollie Wade) by Niwel & Altero
Genre and Mood: Pop + Bright
---------------------------------------------------------
Song: Niwel - Memories
Music provided by Vlog No Copyright Music.
Creative Commons - Attribution-ShareAlike 3.0 Unported
Video Link: https://youtu.be/kjG2hiMpLUU