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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...
Web Symbols typeface
There are those points in every interactive designer’s career when he becomes fed up with producing the same set of graphics all over again for every website he designs. It could be the social network icons, gallery arrows or any number of his «signature» butterflies for the footer of each of his projects. Similar for interactive developers that have to slice the same GIFs and PNGs each time art-director asks them to.U...
Web,Type face,Interactive mode,Design icon 2011-11-19 02:08:47
Functional Programming For Object Oriented Programmers
After recently remarking about how I finally "got" functional programming I was asked by one of my millions of twitter followers... ¬_¬ to write up an explanation of a small F# program spoken in terms that fellow O-O programmers would understand. Before I become too entrenched into the functional programming way of thinking, that is, and can't explain it anymore. As a former tutor this is one of the major problems with being able to teach something once you understand it. You've ...
Functional programming,OOP,F#,Pattern 2011-11-25 13:49:16
Designing Fun
What is “Fun?â€â€œI’ll know it when I see it.â€In 1964, in Jacobellis v. Ohio, the US Supreme Court needed to decide whether the state of Ohio could ban a film it called “obsceneâ€â€”a concept people understood but were hard-pressed to define. Justice Potter Stewart, in his concurring opinion, wrote: “I shall not today attempt further to define the kinds of material I understand to be embraced within that shorthand description; and perhaps I ...
Be Aware of these 10 mistakes while designing Your Mobile App!
So you have finally decided to enter the world of technology and you are going to design an application for your business. The time has become when you have to give all the nitty-gitty grins a look and design your own mobile app for promoting your business online. Well when you have finally decided to design your mobile application, here are some mistakes that you are not allowed to make. Have a look: Do Not Start Designing Your App Without Wireframes Normal 0 false ...
Build route graph of Hurricane Sandy
Hurricane Sandy swept US east side and landed in New York, it killed 113 persons and incurred 50 billion US dollars economic loss. Sandy is also considered as the most expensive hurricane. We will now use matplotlib and basemap libraries in Python to build a route graph of Sandy. Below is the animated GIF. Shadow is added in the graph to show the time at night, we can see from the graph that Sandy stayed a while in Panama after emerging, then it went through Cuba and became Hurricane-2. Late...
Hurricane Sandy,Route graph,Python 2012-11-17 07:58:13
Unfortunate Python
Python is a wonderful language, but some parts should really have bright WARNING signs all over them. There are features that just can't be used safely and others are that are useful but people tend to use in the wrong ways. This is a rough transcript of the talk I gave at my local Python group on November 15, with some of the audience feed back mixed in. Most of this came from hanging around the Python IRC channel, something I highly recommend. [update 2011-12-19: improved "array" cr...
Python,Defects,Deprecated methods,Warning 2011-12-20 08:27:36
Popular Golang JSON libraries evaluation
JSON (Javascript Object Notation), a prevailing data exchange format, is widely used in various platforms and languages. Golang, of course, will never miss the support for JSON. And with its own standard library, such as those interfaces like the REST API from the API Service in Kubernetes, it can easily process JSON. Although Go’s library works great, we can still seek those open-source JSON libs in Github to maximize our efficiency. Then the features, performance, applicability of these ...
FASTJSON,JSON LIB,JSON LIB COMPARISON,GO-JSON 2021-12-11 23:13:23
Understanding JavaScript closure and where it can be used
Closure The official definition of closure is: an expression (usually a function) that has many variables and is bound to an environment that includes those variables. In JavaScript, closure refers to the ability of a function to access the lexical scope in which it was defined, even after the function has been executed and left that scope. This ability is due to the fact that when a function is created, it generates a closure that includes a reference to the definition environment of the curr...
CLOSURE,JAVASCRIPT,USAGE 2023-03-05 02:17:08
6 Tips to Help You Build a Great Web Application
Web applications are a little more challenging to design than websites. Designers need to anticipate user behavior, make users’ lives easier and make the experience as visually appealing as possible. Many designers tend to do what is easier for them than think about what’s easier for the user. The following is a small list of tips that designers often overlook in the process of designing a web application.1. The Power of a Good TooltipWhen you present your web application to a...
Web design,Mobile device,Library,Style 2011-11-25 03:02:11
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