Logs help IT pros to identify system issues. digiLogs provides varied query mechanism to improve troubleshooting efficiency!
#digiLogs_simplifies_log_query
1. Aggregation Query: Sorting messy logs
digiLogs helps you sort unorganized log data using fields in search criteria.

2. Correlation Query: Using cross-queries to find logs
Cross-system log data can be easily retrieved through correlation query.

3. Contextual Query: Searching in specific range
Only keyword query is not enough; contextual query can further filter logs with a specified range.

digiLogs saves your time and effort of log searches.

Get started with digiLogs today→ https://pse.is/3q2cqz

#昕力資訊 #TPIsoftware #Log #logmanagement

The Taipei High Administrative Court on Thursday issued a rare ruling ordering a household registration office in Taiwan to allow a #transgender woman to alter the gender specified on her identity card. #LGBTQ
https://focustaiwan.tw/society/202109240019

📜 [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

這款《男友地下城》（Boyfriend Dungeon）是融合隨機地城冒險以及模擬戀愛元素的遊戲，玩家在暑期接了一份特殊打工，那就是負責掃除地下城的怪物，來到地下城卻發現，到手的武器竟然會化身成俊男美女，重點是還都單身，接下來要如何跟這些武器好好培養感情，那就是玩家的事了。
既然是與武器談戀愛，那最佳約會方式就是一起到地下城打怪啦！玩家帶著要約會的武器進入隨機生成的地下城冒險來賺取收入，共有匕首（Valeria）、彎刀（Sunder）、穿刺劍（Isaac）、長柄刀（Sawyer）、雷射劍（Seven）、手指虎（Pocket）、鐮刀（Rowan）等類型，每種武器都有獨特的戰鬥類型和個性，要學會駕馭他們可得費點功夫，而賺來的錢當然就是要花在各種能增進感情的事情上囉！
遊戲目前已經在各平台上架，想與刀劍們來場約會已經可以行動囉！

©Kitfox Games 2013–2021,unless otherwise specified.

「電玩宅速配」粉絲團：https://www.facebook.com/tvgamexpress
「網紅攝影棚」節目：https://tinyurl.com/y3hejwb5
遊戲庫粉絲團：http://www.facebook.com/Gamedbfans

今回は、VW乾式７速DSGのジャダー（車体がガタガタ震える現象）が、プラグ交換で８割５分（私的体感）消えたお話です。一応２か月半テストしました。
恐らくもともと直噴・燃料薄のせいで、プラグが劣化して失火気味で、低速トルクが不足になると、変速ROMパターン半クラッチが期待値からずれるため、不快なジャダーが出始めるのではないかという感じです。あくまで推測ですが、実に快適になりましたｗ
今回使ったNGKの プレミアムRXプラグもすごいトルク感ですｗｗ　
TSIと、とても相性がよさそうです。 　
このエンジンのスパークプラグ締め付けトルクは２５Nｍです。

How to solve DSG judder mal function of VW７speeds?
Result ///You had better to change New NGK Premium Plugs!
For example BKR6ERX-PS
Spark plugs Specified torque 25Nm

今回の車両
ワーゲンVW　PASSAT　B7　３CCAX TSI1.4　７速DSG

今回使ったグッズはこちらです。
フォルクスワーゲン パサートヴァリアント NGK プレミアムRXプラグ 4本セット BKR6ERX-PS DBA-3CCAX CAX イリジウムプラグ
https://www.amazon.co.jp/gp/product/B07ZRV6BYH/ref=as_li_tl?ie=UTF8&camp=247&creative=1211&creativeASIN=B07ZRV6BYH&linkCode=as2&tag=masumasu02-22&linkId=221319572abf4a34ac1a0f4820376c09

Alpha Rider イグニッションコイル配線ハーネスコネクタ カバー ガード ワイヤーコネクタープラグ クリップ クランプ GOLF Passat Jetta Polo SHARAN Touran Touareg Touran Audi アウディ A4 A6 A8 に適用
https://www.amazon.co.jp/gp/product/B07FMXM272/ref=as_li_tl?ie=UTF8&camp=247&creative=1211&creativeASIN=B07FMXM272&linkCode=as2&tag=masumasu02-22&linkId=c186b328879ad324b17441eef98d92cf

Qiilu【４個】 イグニッションコイルプーラーセット プーラー 点火 コイル プラー 除去ツール T型ハンドル付き 自動車メンテナンス アウディ用
https://www.amazon.co.jp/gp/product/B07VT2DQHT/ref=as_li_tl?ie=UTF8&camp=247&creative=1211&creativeASIN=B07VT2DQHT&linkCode=as2&tag=masumasu02-22&linkId=94386ff94c69c5861e3a81df30d04190

フェリモア コネクター 外し 工具 コネクターリムーバー フォルクスワーゲン アウディ 配線作業用
https://www.amazon.co.jp/gp/product/B07PYQRVH5/ref=as_li_tl?ie=UTF8&camp=247&creative=1211&creativeASIN=B07PYQRVH5&linkCode=as2&tag=masumasu02-22&linkId=9fdc6611e05c1c20021c2b67b991ba01


yarui 端子除去ツールコネクターピン抜き カプラー コネクター 配線 端子 外し 抜き73点セット 工具 カーターミナル取り外しキーツール配線コネクタエクストラクタプーラーリリースピン
https://www.amazon.co.jp/gp/product/B0919MGS9J/ref=as_li_tl?ie=UTF8&camp=247&creative=1211&creativeASIN=B0919MGS9J&linkCode=as2&tag=masumasu02-22&linkId=89db20eae4c9ae0b74249b02f123988b


関連動画　
ワーゲン　７速DSG　またもやリコール！　これで不具合解消望む！！
https://youtu.be/SmmIctggwso

お悩みDSG(ダイレクト・シフト・ギアボックス）の不調は、フィルターチェンジとオイル追加で簡単診断 How to solve mal function of DSG?
https://youtu.be/HbD16U2TO1k





＃ｄｓｇトラブル　＃ＶＷＤＳＧ　＃DSG不具合

I’ve also found a new and great way to save money with Singtel Dash. Heard of Dash PET by Etiqa Insurance? It lets you save at up to 1.3%* p.a. for the first year, starting from just S$50. Your money is also capital guaranteed and flexible to top up or use anytime.
 
Plus, all Dash PET users also get FREE COVID-19 coverage, including side effects from vaccination.
 
Find out more at dash.com.sg/dashpet
 
**For the first S$10,000 Account Value: 1.3% p.a. for the first policy year. Crediting rates are non-guaranteed. Terms apply. Visit dash.com.sg/dashpet for full terms. This policy is underwritten by Etiqa Insurance Pte. Ltd. (Company Reg. No. 201331905K). Protected up to specified limits by SDIC.
 
#SingtelDash #ProtectEarnTransact #sp