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Tag Archives: programming
HHVM 的後續
官方對於 HHVM 的未來提出了說明：「The Future of HHVM」。重點就是他們不打算以 PHP7 為目標，打算關起來自己玩...： Consequently, HHVM will not aim to target PHP7. The HHVM team believes that we have a clear path toward making Hack a fantastic language for web development, untethered from its PHP origins. … Continue reading
Posted in Computer, Murmuring, Programming
Tagged hack, hhvm, language, php, php5, php7, programming
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在程式競賽得獎負面相關於工作的品質
2015 的文章以及演講，最近冒出來看到的。Google 的 Peter Norvig 提到了用 ML 的方式分析，發現程式競賽的成績與工作品質的負面相關性：「Being good at programming competitions correlates negatively with being good on the job」。 換句話說，程式競賽的成績反而是是個負面指標 (對於 Google 內的情況分析出來的，所以是基於 Google hiring process 的前提過濾過的)。 In this talk, Peter talked about how Google did machine learning and … Continue reading
Posted in Computer, Murmuring, Programming, Science, Software
Tagged competition, google, hiring, job, programming, work
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StackOverflow 發 Tab/Space 戰文
StackOverflow 直接拿薪水戰 Tab 與 Space 的差異啊 XDDD：「Developers Who Use Spaces Make More Money Than Those Who Use Tabs」。 這下糟糕了 XDDD
Posted in Computer, Murmuring, Programming
Tagged developer, money, package, programming, salary, space, tab
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Heroku CI 正式推出
月初才提到「Heroku 也要進入 CI 市場...」，前幾天就開放使用了：「Heroku CI Is Now Generally Available: Fast, Low Setup CI That’s Easy to Use」。 收費方式是依照 Heroku Pipelines 收費，一個 Heroku Pipelines 是 USD$10/month： Each CI-enabled Heroku Pipeline is charged just $10/month for an unlimited number of test runs. … Continue reading
Posted in Cloud, Computer, Murmuring, Network, Programming, Software
Tagged case, ci, continuous, heroku, integration, programming, quality, saas, service, test
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Heroku 也要進入 CI 市場...
Heroku 也推出 CI 服務了：「On Building Tools for Developers: Heroku CI」，不過這篇比較有趣的應該是做了不少問卷統計 (Heroku 自己做的，預期會有 bias，心裡有底來看這些資料就好)。 大家最在意的還是各種速度 (第一與第三名)： 然後完全是 GitHub 一統天下的感覺： 另外是 Circle CI 打下不少市場，應該是半免費的策略產生的？也許應該看一看跟 Travis CI 的差距... (不過 Travis CI 的 image 居然還只有 12.04 或 14.04 可以挑，這就讓人 orz 了...)
Posted in Computer, Murmuring, Network, Programming
Tagged ci, circle, continous, github, heroku, integration, programming, travis
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各家 glob 的效能...
在「Glob Matching Can Be Simple And Fast Too」這邊看到在分析 (a.*)nb 這樣的 pattern 的效能 (像是 a.*a.*a.*b 這樣的東西)，第一波先測 shell，結果發現有趣的現象： 那個 csh 是怎麼了 XDDD Looking at the source code, it doesn’t attempt to perform glob expansion itself. Instead it calls the C library implementation … Continue reading
Posted in Computer, Murmuring, Programming, Security, Software
Tagged c, csh, fast, glob, match, matching, performance, programming, shell, speed
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Tor 在考慮使用 Rust 改寫
不過也不確定是不是愚人節消息就是了：「[tor-dev] Tor in a safer language: Network team update from Amsterdam」。 Tor 考慮使用 Rust 改寫，目前已經完成的部份，以及接下來的規劃： What has already been done: - Rust in Tor build - Putting together environment setup instructions and a (very small) initial draft for coding standards … Continue reading
「從 X 語言轉換到 Y 語言」的研究
算是個有趣的研究，看看就好：「The eigenvector of "Why we moved from language X to language Y"」。 作者先用 Google 搜尋拉出數量： 但這個方法少了保留在原語言的資料，所以後面看看就好 XD 接下來是轉換成 stochastic matrix (真是讓人懷念的東西...)： 最高的幾個語言是 Golang、C 與 Java，不過如同前面講的，因為少了留在原語言的資料，看看就好不用當真...
Posted in Computer, Murmuring, Programming
Tagged google, language, matrix, programming
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Ruby 2.4 中 Hash Table 的效能改善
前幾天 Ruby 推出了 2.4.0 (Ruby 2.4.0 Released)，其中特別被拿出來提的：「Introduce hash table improvement (by Vladimir Makarov)」。 討論串很長而且歷時很久，但可以看出來方向是提高 CPU cache 效率： Modern processors have several levels of cache. Usually,the CPU reads one or a few lines of the cache from memory (or another level … Continue reading
Posted in Computer, Murmuring, Programming, Software
Tagged cache, cpu, hash, language, performance, programming, redmine, ruby, table
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分析 GitHub 上的 Tab 與 Space
作者用 BigQuery 分析了 GitHub 上的 Tab 與 Space 的差異 (是個 flame war 開始的節奏 XDDD)：「400,000 GitHub repositories, 1 billion files, 14 terabytes of code: Spaces or Tabs?」。 可以看到除了 C 與 Go 以外，大多數的程式語言都是 Space > Tab。另外在文章下面也有使用的 BigQuery 指令可以參考。