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  Some laws of interactive design

The well known quote from Alan Cooper is   Conforming to the standard unless there is a better choice. There are some best practices in interaction design. How many do you know? 1. Fitts' Law The time from one start point to target point is determined by two parameters: The distance to the target and the size of the target. )D and W in above picture), the formula is : T=a+blog2(D/W+1). It was first proposed by Paul Fitts, it is mathematical model used to predict the time from any poin...

   interaction design, laws, Fitts' law     2012-11-16 11:25:24

  Techies: Let's Not Forget Brain Hacking

A close-up of a jellyfish Description automatically generated with low confidence Credit: SergeyNivens via Canva The world of cyber security never fails to surprise us with bolder and more sophisticated cyber-attacks and...

   HACKING     2022-02-03 21:43:11

  The worst program I ever worked on

Most contract jobs fade pretty quickly in memory after the work is done, but some you remember for the rest of your life. This is one of the latter variety. This happened long ago, at a (fair sized) company that shall remain nameless. The software was a chunk of code that had been maintained by a single guy that had been fired recently and was a core component of a commercial system. So far nothing unusual, companies tend to find out that they have a piece of critical knowledge in one head all ...

   Program,worst     2011-03-17 13:58:36

  Rust vs Go: how to choose the best programming language for your project?

Rust and Go, these two modern programming languages, with their unique advantages, are becoming hot topics in the developer community. Their competition in performance, security, simplicity, feature set, and concurrency not only influences developers' choices but also foretells future trends in software development. Battle of Performance: Rust's Precision vs. Go's Efficiency Rust, developed by Mozilla Research, has become the preferred choice for performance-sensitive applications due to its zer...

   RUST,GO,GOLANG,COMPARISON     2024-02-10 19:36:44

  Password-less login

Most websites need user login in order to provide personalized content to visitors. The usual way is to request user to register an user account. Actually, this is not so appealing since if we need to remember one password for each website, it's troublesome, while for developers, it's their responsibility to protect password, once password is leaked, then it's a big headache to a website's business and reputation. So long time ago people started thinking about password-less login, this is a big ...

   Password-lesslogin,Authentication     2012-11-05 12:29:55

  Some tips for writing proper emails

Email is now becoming one necessity of working. We may receive hundreds of emails everyday, they may from our colleagues, friends or clients. We need to exchange ideas, arrange meetings , asking for help etc though email in our work. A proper email can help us achieve what we want to achieve. Here we share some tips for writing a proper email.At the beginning of an email : Thank the reader is a good way to start the email, thank the reader may make the reader feel happy, especially when you ask ...

   EMAIL,TIP,FORMAT,TEMPLATE     2012-07-02 12:26:32

  the Performance Golden Rule

Yesterday I did a workshop at Google Ventures for some of their portfolio companies. I didn’t know how much performance background the audience would have, so I did an overview of everything performance-related starting with my first presentations back in 2007. It was very nostalgic. It has been years since I talked about the best practices from High Performance Web Sites. I reviewed some of those early tips, like Make Fewer HTTP Requests, Add an Expires Header, and Gzip Components. ...

   Web design,Golden rule,Performance     2012-02-17 07:51:09

  Learning Ruby and Ruby vs Lisp

The company I work for has a lot of legacy Ruby code, and as Ruby has become kind of a mainstream language, I decided to get a book about it and learn how it works. As my learning resource, I chose The Ruby Programming language by David Flanagan and Yukihiro Matsumoto as that receives great customer reviews, covers Ruby 1.8.7 and 1.9 and is authoritative because the language creator is one of the authors. The book makes a good read in general. There are plen...

   Ruby,Feature,Functional,OOP,Lisp,Difference     2011-12-12 07:42:01

  Supercolliding a PHP array

Did you know that inserting 2^16 = 65536 specially crafted values into a normal PHP array can take 30 seconds? Normally this would take only 0.01 seconds. This is the code to reproduce it: <?php echo '<pre>'; $size = pow(2, 16); // 16 is just an example, could also be 15 or 17 $startTime = microtime(true); $array = array(); for ($key = 0, $maxKey = ($size - 1) * $size; $key <= $maxKey; $key += $size) { $array[$key] = 0; } $endTime = microtime(true); echo 'Inserting...

   PHP,Array,hashtable,Slow,Colliding     2011-12-29 09:02:01

  Web design trends in 2012. What’s new?

It’s no surprise they call them trends, become they come and go. Maybe you don’t want to take them with the constant changes in web design you sure don’t want to be left behind, do you? Nobody can predict the future of web design, but we’re already seeing small changes to the newer designs and I bet we all want to be part of the movement. Most of the changes in web design are subtle so we need to focus mainly on the concept behind each trend. We will exemplify e...

   2012,Web design,Trend,Slab,Typography     2011-12-16 09:31:27

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