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Earlier this week I was putting together a block of code which ended turning into a switch statement with a tangled mess of long case blocks, complicated fall throughs, and ultimately became impossible to follow. Being a stand up guy, I decided to refactor the block using a technique where the case blocks are converted into anonymous functions, indexed into an associative array, and then the correct function is called depending on the value.
The life of a switch statement usually starts out relatively benign, you have a few simple conditions and each block is relatively compact:. But then, the switch grows and each case becomes complicated enough that it the entire block becomes mostly unreadable: The primary benefit to structuring the code this way is that you can easily reason about side effects since the only variables that can be changed are what captures the return value or anything passed by reference.
In addition, since every case is a separate function its a bit easier to edit the code. So what does this look like? Extending from there, you could also call the function with arguments, potentially by reference, and even have all the functions be closures which capture the variables to avoid having to call with arguments.
Developers built extensions like Firebug , Greasemonkey , and companies like Rapportive inside the Firefox extension ecosystem. Following Firefox, when Google Chrome launched it debuted its own even simpler extension infrastructure and eventually the Chrome Webstore to help distribute and monetize extensions.
Compared to the desktop, the landscape on mobile is notably different because of an Apple and Google duopoly with Apple primarily monetizing hardware and Google monetizing search advertising.
Additionally, compared to the desktop, Apple and Google have an unprecedented level of control over user devices, all but ensuring that devices will arrive with either Safari or Chrome installed.
I think because of this control, Apple and Google have little incentive to open up Mobile Safari or Mobile Chrome to 3rd party extension developers since doing so would compromise the browser user experience for little gain over the competition. But what about Firefox? Chrome , extensions , fun stuff. Yesterday, Daum and I hung out at HackHarvard and gave a presentation about how we started Setfive , the challenges we faced, and some of the lessons we would tell our younger selves. The feedback and resulting discussion was pretty interesting so it seemed like it makes sense to share.
In addition to professionally, I also remember several instances of real estate brokers and landlords trying to strongarm me personally.
Professor singles you out to answer a question? Better know the answer. This usually resulted in overpromising, having to backpedal later, or being stuck bullshitting through some half baked explanation. Once I understood this, it became much easier to walk into a meeting and confidently talk about money. Over in the real world though, this seemed to start happening frequently. The issue with having these blinders was that it made it difficult to effectively communicate with stakeholders when there was someone bollixed in between.
Once I realized that cluelessness was really cluelessness, it became much easier to marginalize the people that were lost and get shit done. Something that took awhile to realize was that not everyone is like me. After realizing that, it became easier to emphasize with different types of users and also better connect with stakeholders.
Anyway, these are my notes to send back to Would love any thoughts or feedback in the comments. Monday was a horrific day in Boston and its been an uneasy day after.
TUGG has setup a fundraise. Talk of a bubble has coincided with the buzz, but both have also served to highlight the tremendous potential in the Bitcoin ecosystem.
Bitcoin is a decentralized digital currency based on an open-source, peer-to-peer internet protocol. Bitcoin is not managed like typical currencies: Instead, it relies on an Internet-based peer-to-peer network.
Several high profile investors including YCombinator and Union Square Ventures have also made significant Bitcoin related invetments, signalling that savvy investors believe a potential market exists. Hassle free, instant, and international money transfer. Paypal was supposed to allow us to do this, but even in its difficult and expensive to transfer people money — let alone internationally.
Catapult in legalized online gambling. This would obviously be a boon for struggling social game companies like Zynga, but also provide an enormous opportunity for new startups. Provide a viable alternative to credit cards. Unfortunately, almost all of these new payment solutions still rely on existing credit card infrastructure to complete the payment which leaves them at the whim of interchange fees.
An innovative Bitcoin company which provides a viable alternative to this existing credit card infrastructure would open the door to radical innovation in the payments space by eliminating hard interchange fees. With the Bitcoin boom of already inked on the Wikipedia entry, the next few months are going to be a critical time for the nascent currency. The single largest to Bitcoin is ultimately going to be regulation from sovereign governments.
Regardless of what regulation is passed, Bitcoins are technologically different from previous virtual currency and the ecosystem has already demonstrated its resilience and innovation.
Dispatch tables, an alternative to switch hell Posted April 25th, by Ashish Datta. Where are the mobile browser extensions? Posted April 23rd, by Ashish Datta. Thoughts, ideas, and opportunities Posted April 10th, by Ashish Datta.
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