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Last time we investigated the naive (which I’ll henceforth call “classical”) notion of the Fourier transform and its inverse. While the development wasn’t quite rigorous, we nevertheless discovered elegant formulas and interesting properties that proved useful in at least solving differential equations. Of course, we wouldn’t be following this trail of mathematics if it didn’t result in some worthwhile applications to programming. While we’..
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Last time we investigated the naive (which I’ll henceforth call “classical”) notion of the Fourier transform and its inverse. While the development wasn’t quite rigorous, we nevertheless discovered elegant formulas and interesting properties that proved useful in at least solving differential equations. Of course, we wouldn’t be following this trail of mathematics if it didn’t result in some worthwhile applications to programming. While we’..
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Last time we investigated the naive (which I’ll henceforth call “classical”) notion of the Fourier transform and its inverse. While the development wasn’t quite rigorous, we nevertheless discovered elegant formulas and interesting properties that proved useful in at least solving differential equations. Of course, we wouldn’t be following this trail of mathematics if it didn’t result in some worthwhile applications to programming. While we’..
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For some reason I felt compelled to go through my (pretty small) book collection and pick five of my favorite opening lines. Here they are:
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If you want your subsites to inherit their masterpages from their parents the first thing you need to know is the difference between normal…
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If you want your subsites to inherit their masterpages from their parents the first thing you need to know is the difference between normal…
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I’ve been reluctantly dreading the switch to gnome 3 + shell until it’s been ironed out a little bit more than gnome 3.0 - finally took the plunge. overall it’s working well. here are some (hopefully) useful notes: preupgrade 14->17 in one step doesn't work. it lets you wait an hour for all the downloads to finish, but once you've rebooted, the preupgrade installer tells you it can't jump this far. fail. reboot into f14, yum clean all, rm....
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I’ve been reluctantly dreading the switch to gnome 3 + shell until it’s been ironed out a little bit more than gnome 3.0 - finally took the plunge. overall it’s working well. here are some (hopefully) useful notes: preupgrade 14->17 in one step doesn't work. it lets you wait an hour for all the downloads to finish, but once you've rebooted, the preupgrade installer tells you it can't jump this far. fail. reboot into f14, yum clean all, rm....
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Il filmato del mio recente intervento al Ravenna CNA BarCamp è online. L’ articolo originale è stato aggiornato e ora include sia le slide che il video. In alternativa c’è sempre YouTube.
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Welcome to the latest iteration of my blog! I recently realized that I’ve been blogging since 1997 , but actual visual or technical updates have been a lot more seldom. This new blog aims to focus on simplicity and content, much in the spirit of Zeldman’s 2012 web design manifesto . You can find a lot more about how this iteration was built in the colophon . For reference, here is how the old site layout from 2007 looked like: ..
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Welcome to the latest iteration of my blog! I recently realized that I’ve been blogging since 1997 , but actual visual or technical updates have been a lot more seldom. This new blog aims to focus on simplicity and content, much in the spirit of Zeldman’s 2012 web design manifesto . You can find a lot more about how this iteration was built in the colophon . For reference, here is how the old site layout from 2007 looked like: ..
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Il filmato del mio recente intervento al Ravenna CNA BarCamp è online. L’ articolo originale è stato aggiornato e ora include sia le slide che il video. In alternativa c’è sempre YouTube.
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Il filmato del mio recente intervento al Ravenna CNA BarCamp è online. L’ articolo originale è stato aggiornato e ora include sia le slide che il video. In alternativa c’è sempre YouTube.
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Il filmato del mio recente intervento al Ravenna CNA BarCamp è online. L’ articolo originale è stato aggiornato e ora include sia le slide che il video. In alternativa c’è sempre YouTube.
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Il filmato del mio recente intervento al Ravenna CNA BarCamp è online. L’ articolo originale è stato aggiornato e ora include sia le slide che il video. In alternativa c’è sempre YouTube.
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Comparing the performance of Math.floor(), parseInt and a (bitwise) shift
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arnorhs.dev
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14 years ago
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eng
I read somewhere that a bitwise left shift was a faster method of removing a fraction of a floating point number in Javascript than using parseInt or Math.floor(). I wasn't surprised that parseInt was slow, since I think it parses the number as a string, but the left shift being faster than Math.floor() was a bit more puzzling to me. So I decided to make a JSPerf test to compare those three methods. Read on for the full results
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Moonlight, l’implementazione open-source di Silverlight per sistemi Linux, è stata abbandonata da Xamarin. Abbiamo abbandonato Moonlight (…) Il web non ha addotato Silverlight; non ha avuto il successo che mi aspettavo. Miguel de Icaza Un’altro chiodo sulla bara di Silverlight. Dei dubbi sul futuro della tecnologia Microsoft avevo già scritto in occasione della sua mancata adozione in Windows 8 e al momento dell’annuncio di Silv..
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Comparing the performance of Math.floor(), parseInt and a (bitwise) shift
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arnorhs.dev
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14 years ago
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eng
I read somewhere that a bitwise left shift was a faster method of removing a fraction of a floating point number in Javascript than using parseInt or Math.floor(). I wasn't surprised that parseInt was slow, since I think it parses the number as a string, but the left shift being faster than Math.floor() was a bit more puzzling to me. So I decided to make a JSPerf test to compare those three methods. Read on for the full results
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So I have rolled out quite a few performance improvements. searchcode is MUCH MUCH faster then it was before. I also added some various improvements across the board in terms of relevance. This included indexing characters like !@#$%^&*()-= etc… So now things like the perl regex match =~ is now a valid search term. Of course you can combine terms and normal characters to get really complex search terms such as $localdate =~ /([0-9]+):([0..
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An “Agile” project is one that actively seeks to incorporate changes as the project progresses, rather than assuming that the plans from the beginning of the project will work for the whole project duration. Not all organizations want to adopt “agile” as their project metaphor. And some organizations that do adopt methods such as Scrum do it without becoming as “agile” as Scrum promises. Instead of criticizing these organizations of “agile ..
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Like many people in the Technology world I watched Apple's iPad announcement this week with intense interest. Unlike most people I am interested not in the consumer space - but rather how could this device be used for business. How could a new category like this be used? This post Apple Reaches for Greatness Without Apology first appeared on Dan Stroot's Blog
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In our last primer we saw the Fourier series, which flushed out the notion that a periodic function can be represented as an infinite series of sines and cosines. While this is fine and dandy, and quite a powerful tool, it does not suffice for the real world. In the real world, very little is truly periodic, especially since human measurements can only record a finite period of time. Even things we wish to explore on this blog are hardly pe..
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In our last primer we saw the Fourier series, which flushed out the notion that a periodic function can be represented as an infinite series of sines and cosines. While this is fine and dandy, and quite a powerful tool, it does not suffice for the real world. In the real world, very little is truly periodic, especially since human measurements can only record a finite period of time. Even things we wish to explore on this blog are hardly pe..
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In our last primer we saw the Fourier series, which flushed out the notion that a periodic function can be represented as an infinite series of sines and cosines. While this is fine and dandy, and quite a powerful tool, it does not suffice for the real world. In the real world, very little is truly periodic, especially since human measurements can only record a finite period of time. Even things we wish to explore on this blog are hardly pe..
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I love this quote and I think it really fits in with what I'm doing with this blog, and in my everyday life. Taking pride in your work is…
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I love this quote and I think it really fits in with what I'm doing with this blog, and in my everyday life. Taking pride in your work is…
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Se siete ai primi passi nello sviluppo di applicazioni web vi consiglio la lettura di SSH: What and How. Senza troppi fronzoli l’articolo spiega le basi di SSH mettendo bene in luce le possibilità offerte da questo importante strumento di lavoro. Ogni giorno molti sviluppatori web usano SSH (“Secure Shell”) per gestire i loro server, fare backup, lavorare in remoto e una miriade di altre cosette. Oggi vi spiego cos’è e da dove viene SSH..
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Finding stories in your backlog, locating a bug that was logged last week and rediscovering the acceptance criteria on an older story all require a good search capability. The need to find specific cards more easily and consistently in a Mingle project, especially with a large number of cards, has been widely requested. And we’ve heard you.
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Se siete ai primi passi nello sviluppo di applicazioni web vi consiglio la lettura di SSH: What and How. Senza troppi fronzoli l’articolo spiega le basi di SSH mettendo bene in luce le possibilità offerte da questo importante strumento di lavoro. Ogni giorno molti sviluppatori web usano SSH (“Secure Shell”) per gestire i loro server, fare backup, lavorare in remoto e una miriade di altre cosette. Oggi vi spiego cos’è e da dove viene SSH..
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Se siete ai primi passi nello sviluppo di applicazioni web vi consiglio la lettura di SSH: What and How. Senza troppi fronzoli l’articolo spiega le basi di SSH mettendo bene in luce le possibilità offerte da questo importante strumento di lavoro. Ogni giorno molti sviluppatori web usano SSH (“Secure Shell”) per gestire i loro server, fare backup, lavorare in remoto e una miriade di altre cosette. Oggi vi spiego cos’è e da dove viene SSH..
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