There are very few people that can get me to stay up past midnight on a "school" night and Bond is one of them. Orignally planned for an April 2020 release, myself and a select few got to attend a special screening of the latest 007 installment, No Time to Die.
It's the first time I'd been to a cinema since pre-Covid days and I didn't realise how much I missed watching content on a massive screen with popcorn and soda at arms-length!
Thank you to Land Rover for the exclusive invite. For the rest of you that have been looking forward to Daniel Craig's final Bond appearance, all I can say is, #NOTimeForSpoilers.
Enjoy!
#NoTimeToDie
#JamesBond
#MovieNight
#ExclusivePreview
#Premier
#DanielCraig
同時也有309部Youtube影片,追蹤數超過113萬的網紅Japanese Calligrapher Takumi,也在其Youtube影片中提到,How to write Kimigayo with gold brush | His Imperial Majesty's Reign | The national anthem of Japan "Kimigayo" (君が代, Japanese pronunciation: [kimiɡaj...
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at length 在 Chanwon Sweetie♥ Facebook 的最佳貼文
Dress up for our private omakase dine-in experience yesterday. Everything was nice except for the food, a little disappointed with the menu and not worth for the price of it. Put some effort on dressing up myself, dine-in for the first time after 5 months and look at the length of my hair. Gonna trim it soon lol
at length 在 Taipei Ethereum Meetup Facebook 的精選貼文
📜 [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.
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at length 在 Japanese Calligrapher Takumi Youtube 的最讚貼文
How to write Kimigayo with gold brush | His Imperial Majesty's Reign | The national anthem of Japan
"Kimigayo" (君が代, Japanese pronunciation: [kimiɡajo]; "His Imperial Majesty's Reign") is the national anthem of Japan. The lyrics of "Kimigayo" are probably the oldest among the world's national anthems, and with a length of 32 characters, they are also the world's shortest. The lyrics are from a waka poem written by an unnamed author in the Heian period (794–1185), and the current melody was chosen in 1880, replacing an unpopular melody composed by John William Fenton eleven years earlier. Its length of 11 measures is currently among the world's shortest. While the title "Kimigayo" is usually translated as "His Imperial Majesty's Reign", no official translation of the title or lyrics has been established in law.
From 1888 to 1945, "Kimigayo" served as the national anthem of the Empire of Japan. When the Empire was dissolved following its surrender at the end of World War II, the State of Japan succeeded it in 1945. This successor state was a parliamentary democracy, and the polity therefore changed from a system based on imperial sovereignty to one based on popular sovereignty. However, the U.S. occupation forces allowed Emperor Hirohito to retain the throne and "Kimigayo" remained the de facto national anthem. The passage of the Act on National Flag and Anthem in 1999 recognized it as the official national and imperial anthem.
(From Wikipedia)
#handwriting #calligraphy #Japan
at length 在 Square Enix Youtube 的最讚貼文
Take an even closer look at BABYLON’S FALL with this full-length interview. This long-form video features a full behind-the-scenes discussion from the creative teams at Square Enix and PlatinumGames, including director Kenji Saito.
For the most up to date news be sure to follow:
Official Website: www.babylonsfall.com
Twitter: @BabylonsFall_EN
Instagram: @BabylonsFall_EN
Facebook: @BabylonsFallthegame
YouTube: youtube.com/squareenix
#BabylonsFall
at length 在 Michelle Phan Youtube 的精選貼文
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at length 在 一分钟美语--Keep someone at arm's length - YouTube 的美食出口停車場
如果你“keep someone at arm's length,你就和那个人保持一定距离,就像手臂的长度! ... <看更多>