LIVING IN ACTIVEWEAR 🧡
and I fully stand by it! Activewear is the official uniform of the modern Mama. Who is with me?
🧡
Check out Sweaty Betty First Pop-Up in Asia and get a $200 Sweaty Betty shopping voucher!!!
Venue and duration:
Pacific Place | 27 Sept - 3 Oct 11:00am-8:00pm
Sweat Betty is a British athleisure and lifestyle brand that designed by women for women - empower women through fitness and beyond !
Let’s join Sweaty Betty’s community and build the mission together !
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#rosannewong #activeware #sweatybettyrosannewong
同時也有120部Youtube影片,追蹤數超過80萬的網紅kinryyy,也在其Youtube影片中提到,thank u for making my dreams come true!!!! Big Shoutout to Usak Tourism for all assistance. T.C. Uşak Valiliğine, Uşak İl Kültür ve Turizm Müdürlüğüne...
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a uniform 在 Focus Taiwan Facebook 的最佳貼文
Any luck with winning at least NT$200 this time? A total of four uniform invoices issued in July and August had the winning serial number drawn Saturday in the bimonthly lottery draw for the top prize of NT$10 million (US$359,912).
https://focustaiwan.tw/business/202109260007
a uniform 在 Taipei Ethereum Meetup Facebook 的最佳解答
📜 [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.
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a uniform 在 kinryyy Youtube 的最佳貼文
thank u for making my dreams come true!!!!
Big Shoutout to Usak Tourism for all assistance.
T.C. Uşak Valiliğine, Uşak İl Kültür ve Turizm Müdürlüğüne, Uşak İl Kültür ve Turizm Müdürüne destek ve yardımları için teşekkür ediyorum...
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a uniform 在 Undisputed Youtube 的精選貼文
Anthony Davis "taking the blame" This is the worst game himself has played in a Lakers uniform
a uniform 在 Tasty Japan Youtube 的精選貼文
かわいいひとくちピザのご紹介です!
発酵なしで時間はかかりません♪
くるっと結ぶだけなので、お子さんと一緒に楽しく作れちゃいます♡
ガーリック味のひとくちサイズなので、お酒にもぴったりなレシピです♪
とっても簡単で美味しいので、ぜひ作ってみてくださいね!
ひとくちガーリックピザ
12個分
材料:
■生地
A強力粉 250g
A薄力粉 50g
A粗挽き黒コショウ 小さじ1/2
Aベーキングパウダー 5g
A塩 5g
Aオリーブオイル 大さじ2
水 140〜150ml
オリーブオイル(塗り用) 小さじ1
■ガーリックバター
Bバター 30g
Bにんにく(みじん切り) 2片
B塩 小さじ1/2
B粗挽き黒コショウ 少々
Bオリーブオイル 小さじ1
ドライパセリ 適量
作り方:
1.生地を作る。ボウルにAを入れて、全体を混ぜ合わせる。
2.水を加え入れ、ひとまとまりになるまでこねて、丸めたらボウルに入れてふんわりとラップをし、生地を30分置く。
3.オーブンを220度に予熱しておく。
4.ボウルから生地を出し、たて10cm、よこ30cm程に伸ばし、2.5cmくらいの幅に12等分になるように切る。
5.切った生地はひとつずつ、伸ばしながら数回ねじり、結び目を作ってクッキングシートをしいた天板の上にのせる。
6.(5)の生地にオリーブオイル(塗り用)を塗り、オーブンで15分程焼き、一度取り出す。
7.ガーリックバターを作る。小鍋にBを入れ、火にかけてバターが溶け切ったらドライパセリを加える。
8.一度取り出した(6)の生地に手早くガーリックバターを塗り、再び200℃のオーブンで10〜15分ほどほんのり色づくまで焼いたら、完成!
Garlic Bread Knots
Servings:12
INGREDIENTS
A 250g Bread flour
A 50g Flour
A 1/2 teaspoon Pepper
A 5g Baking powder
A 5g Salt
A 2 Tablespoons Olive oil
150ml Water
1 teaspoon Olive oil (for coating)
■Garlic butter
B 30g Butter
B 2 pieces Garlic (chopped)
B 1/2 teaspoon Salt
B Pepper
B 1 Teaspoon Olive oil
Dry parsley
PREPARATION
1. Make the dough. Put A ingredients in a bowl and mix.
2. Add water, knead until it becomes uniform, roll it into a ball and cover with plastic wrap, rest for 30 minutes.
3. Preheat the oven to 220 degrees.
4. Take the dough out of the bowl, stretch it to a length of 10 cm and a width of 30 cm, cut it into 12 equal parts with a width of about 2.5 cm.
5. Stretch the dough enough to tie a knot and place it on a baking sheet lined with the parchment paper.
6. Coat the knots with olive oil, bake in the oven for about 15 minutes, and take out to the oven.
7. Make garlic butter. Put B in a small pan and heat until butter is fully melted, add dry parsley and remove from heat.
8. Quickly apply garlic butter to the knots (6) , and bake it again at 200 ° C for 10 to 15 minutes until slightly colored, and you're done!
9. Enjoy!
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#レシピ
MUSIC
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