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  Understand GoLang WaitGroup internals and how it works

Background Before getting into the main content, let me give a brief introduction to WaitGroup and its related background knowledge. Here, the focus is on the basic usage of WaitGroup and the fundamental knowledge of system semaphores. For those who are familiar with these, you can skip this section directly. WaitGroup WaitGroup is one of the most common concurrency control techniques in Golang, and its function can be roughly compared to the join() in concurrency control of other languages' mul...

   GOLANG,WAITGROUP,SOURCE CODE     2023-04-26 08:02:01

  Hail the return of native code and the resurgence of C++

Programming language trends come and go. First, Java is the hot new language, then it's Python, then Ruby steals the limelight, then it's back to JavaScript. But the latest language darling is probably the last one anyone expected. Believe it or not, 2011 could be the year of C++. Last week, the latest version of the ISO C++ Standard was approved by unanimous vote. It's the first major revision of the language in 13 years. Now officially known as C++11, the new standard introduces features desig...

   C++,Future,Return back,Popular,Local dev     2011-08-24 02:20:24

  In-memory key-value store in C, Go and Python

Subtitle: Wow Go’s net library is fast On paternity leave for my second child, I found myself writing an in-memory hashmap (a poor-man’s memcached), in Go, Python and C. I was wondering how hard it would be to replace memcached, if we wanted to do something unusual with our key-value store. I also wanted to compare the languages, and, well, I get bored easily! The code is on github as Key-Value-Polyglot. Each version implements enough of the get and set commands from the mem...

   key-value,Memory,C,Python,Go     2012-03-21 09:21:51

  How to Seem (and Be) Deep

I recently attended a discussion group whose topic, at that session, was Death.  It brought out deep emotions.  I think that of all the Silicon Valley lunches I've ever attended, this one was the most honest; people talked about the death of family, the death of friends, what they thought about their own deaths.  People really listened to each other.  I wish I knew how to reproduce those conditions reliably.I was the only transhumanist present, and I was extremely careful not...

   Deep,Work,Smart,Work style,Study     2011-10-23 11:46:11

  Discovery kills distribution: why the web needs a new leader

[Apple and Google have locked application discovery and distribution within their app stores. VisionMobile's Andreas Constantinou explains how Facebook is using the web to disintermediate Apple/Google and why the web needs a new leader].The platform duopoly.In just the space of 3 years, the mobile platforms landscape has changed from an election race to an oligarchy. The network effects at the heart of the Apple and Google business models have created formidable barriers to entry. The growth in ...

   Web,Leader,New era,Google,Apple,Mobile     2011-10-18 02:53:29

  A String is not an Error

I decided to write a little article to discourage an unfortunately common pattern in Node.JS modules (and browser JavaScript, to a lesser extent) that can boil down to these two examples: // A:function myFunction () {  if (somethingWrong) {    throw 'This is my error'  }  return allGood;} and // B: async Node.JS-style callback with signature `fn(err, …)`function myFunction (callback) {  doSomethingAsync(function () {    // …    if (...

   JavaScript,Node.js,String,Error object     2011-12-23 08:00:32

  Before Python

This morning I had a chat with the students at Google's CAPE program. Since I wrote up what I wanted to say I figured I might as well blog it here. Warning: this is pretty unedited (or else it would never be published :-). I'm posting it in my "personal" blog instead of the "Python history" blog because it mostly touches on my career before Python. Here goes.Have you ever written a computer program? Using which language?HTMLJavascriptJavaPythonC++COther - which?[It turned out the students ha...

   Python,History,Programming language,B     2012-01-18 08:08:53

  Why I Will Never Feel Threatened by Programmers in India

I got a call from a friend of a friend the other night. It was a fellow with whom I’d talked 11 months ago about a project he and his partner were looking to start. We established then that I wasn’t the guy for him, that I was likely too expensive for their big-dreams, small-means budget. Fast forward to present day: their project is still not launched, it’s still not right. They’ve paid for something between 600-700 hours of development with a firm in India, an...

   Indian programmer,Outsourcing,Poor quality,Low cost     2011-12-05 13:00:13

  Why I Will Never Feel Threatened by Programmers in India

I got a call from a friend of a friend the other night. It was a fellow with whom I’d talked 11 months ago about a project he and his partner were looking to start. We established then that I wasn’t the guy for him, that I was likely too expensive for their big-dreams, small-means budget. Fast forward to present day: their project is still not launched, it’s still not right. They’ve paid for something between 600-700 hours of development with a firm in India, an...

   Indian programmer,Outsourcing,Poor quality,Low cost     2011-12-05 12:58:26

  Why I Will Never Feel Threatened by Programmers in India

I got a call from a friend of a friend the other night. It was a fellow with whom I’d talked 11 months ago about a project he and his partner were looking to start. We established then that I wasn’t the guy for him, that I was likely too expensive for their big-dreams, small-means budget. Fast forward to present day: their project is still not launched, it’s still not right. They’ve paid for something between 600-700 hours of development with a firm in India, an...

   Indian programmer,Outsourcing,Poor quality,Low cost     2011-12-05 13:00:04

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