Ramblings on code, startups, and everything in between
As far as type systems go, PHPs is pretty schizophrenic. You’ve got primitive types, like strings and booleans, the ubiquitous “array” type, and then user defined classes. Most of the time, the type system is invisible since it barely enforces anything. Especially for basic types and the standard library, you can almost always use strings, booleans, and integers interchangeably without much complaining from the interpreter. Where things go sideways is when you start using user defined types, especially with type hinting.
Imagine we’ve got the following setup:
If you run that in a terminal, PHP will throw the following error:
PHP Catchable fatal error: Argument 1 passed to sayHello() must be an instance of Dog, instance of Pet given, called in /home/ashish/Downloads/dog.php on line 19 and defined in /home/ashish/Downloads/dog.php on line 14
Because even though every “Dog” is by definition a superset of the “Pet” class, PHP doesn’t see it that way. And now, our original problem. In most other object oriented languages, you’d be able to simply typecast the instance of Pet to a Dog and then call the function as expected. Unfortunately, PHP doesn’t natively support typecasting so we’re stuck looking for a crazy workaround. Enter Reflection. PHPs reflection library lets you do all sorts of nefarious things, like manipulating private properties and retrieving the source for an arbitrary object.
So how do you use it to do a bootleg typecast? It’s actually pretty straightforward:
The “copyShimmedObject” is the money maker. It basically pulls the private properties out of the “from”, makes the property public, and then sets them on the “to” object. If you run the sample you’ll get the expected output instead of the error above:
Hello: Fluffy of destroyer of worlds
I was building out an API test console a few days ago and realized I’d never actually looked into how to grab all available routes in Symfony2. The “console” is basically a form with a select box and textarea that lets you “ping” the REST API routes in one of our applications. To make this work, I wanted to traverse all the registered routes, filter for the ones that contained “api_”, and then generate dummy URLs for those routes.
I searched around a bit for how to grab all the registered routes and the only link seems to be https://gist.github.com/hubgit/3380250 Unfortunately, if you try and use the code you’ll discover that “getPattern” no longer exists in the CompiledRoute class. It looks like it’s been replaced by getPathVariables
So, working code to generate a list of route names and “dummy” URLs for you API routes ends up looking like:
I was catching up with a friend of mine recently and she was asking what I “wanted” to build. As we started talking about it, I realized I didn’t really have a “go to” list of what I’d love to try building. At this point, web apps have become a bit boring, I mean how many times can you really write:
Inspired by Y Combinator’s Startup Ideas We’d Like to Fund and more recently Spotify’s Design Lead on Why Side Projects Should Be Stupid here’s a list of projects we’d love to build.
Inspired by Bitcoin: How would you build a parlor game?, I think it would be awesome to build some sort of hardware Bitcoin integration. Any interesting angle would be to take something familiar like a casino game, jukebox, or vending machine and then make it “Bitcoin powered”. Also, with the MIT Bitcoin airdrop in the Fall it seems like Central Square and Kendall Square are the perfect places to roll something like this out.
From NodeJS to Websockets, “real time” seems to be all the rage but most applications aren’t really dealing with processing streaming data at scale. Processing data streams, even at moderate scale, seems like it would be a fun challenge and would open up the development of interesting solutions. In the last few years, projects like Apache Storm and Akka have significantly lowered the barriers to development so it seems like the perfect time to jump in. We’d love to leverage these tools to analyze click streams, sensor data, or financial “tick” data.
As the price of storage has decreased, organizations are recording and retaining more data than ever before. Unfortunately, most companies are hesitant to experiment with different visualization options and end up with a handful of charts and tables. I’d love to have the opportunity to really take d3js out for a spin and build some awesome visualizations. From visualizing multi-modal data to helping uncover patterns, I’d love to help organizations get the most out of their data.
Anyway, if anyone wants to build any of these definitely get in touch! Would also love to hear everyone else’s ideas in the comments.
Posted In: General
Tags: fun stuff
As has become tradition, Mary Meeker of Kleiner Perkins published her anual “Internet trends” report a couple of days ago. As always, its a great read and you should check it out here. Digging through the slides, a couple of things jumped out to me personally:
Over the past few months, there’s been a slew of blog posts bemoaning the death of the tablet. Arguments basically ranged from the point that tablet hardware is too immature to the fact that most people don’t have a strong table usecase. Looking at the report though, the # of shipped tablets is clearly exploding and is trending upwards. That said, the report doesn’t break out what kinds of tablets are being shipped – we’ll have to check in with Ben Evans for that.
If I worked in print media, slide 15 would be giving me some serious heartburn. Compared to other channels, print is receiving a disproportionate percentage of ad spend compared to how much time consumer spend consuming print media. Obvious outcome here is that advertising dollars are going to continue to shift digital, with mobile picking up the biggest chunk. The buying spree around mobile ad networks is already signalling this shift with the clear example being Twitter buying MoPub.
There was a flurry of attention and armchair quarterbacking around Apple’s acquisition of Beats and slide 50 highlights how music is changing. With consumers favoring streaming over purchasing, the market opportunity for “winning” music is certainly shrinking. Couple that with streaming services being available on multiple devices and the Apple/Beats deal looks even stranger. In any case, the future will definitely be streamed.
Looks like the hotly anticipated “battle for the living room” is heating up. With the proliferation of set top boxes like the Roku and AmazonTV along with release of next gen game consoles, consumers are changing how they consume traditional TV. Coupled with “apps” like HBO Go, there are fewer reasons to avoid “cutting the cord” and abandoning traditional cable TV service. Obviously the content owners still hold the keys but as Netflix proved with House of Cards, making awesome TV as an outsider isn’t impossible.
Anyway, as always would love any thoughts or comments!
Posted In: General
Tags: fun stuff
If you’ve been charged with locating a source of snapbacks for cheap for your company or company, you’re most likely questioning merely exactly how to find one. In years past, firms simply opened up their neighborhood phone publication and also located a business that could contract out these items.
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Some companies that sell wholesale baseball caps as well as other hats have a vast stock in stock in any way times, while others don’t order from their distributors until they have an order. Buying from a business that continues an inventory handy in any way times means you’ll be able to get your order quicker. It’s unavoidable that some items may be unavailable every now and then, yet if the business’s web site lists virtually every product as unavailable every single time you see the site, continue trying to find an additional source.
Posted In: General
Tags: Baseball cap