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• Why isn't Stripes popular, even though it's an awesome web framework?

  - by Mr.Chowdary

  I'm new to Stripes. I worked on MVC frameworks like Struts 1.x and 2.x. When I started learning, its features are awesome and very lightweight; it has in-depth validations and offers easy integration with other frameworks too. There are no configurations and everything is simplified with annotations. I don't understand why Stripes is not popular compared with other Java web frameworks like Struts or JSF? I didn't find any drawbacks in Stripes. Any ideas why?

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• Angry Birds and Star Wars Join Forces for an Awesome New Edition [Plus Wallpaper!]

  - by Asian Angel

  Are you ready for a new version of Angry Birds? Then rejoice, you are less than a month away from an awesome new release of everyone’s favorite bird-slinging, pig smashing game! Prepare for a journey to a galaxy far, far away… From the blog post: From the deserts of Tatooine to the depths of the Death Star – the game and merchandise will feature the Angry Birds characters starring as the iconic heroes of the beloved Saga. In the coming weeks, fans can expect additional new videos, characters, and much more exciting content to be revealed. The game will be available on iOS, Android, Amazon Kindle Fire, Mac, PC, Windows Phone and Windows 8. Here is the first of the promo videos for the new version. Also, make sure to download the first official wallpaper (linked to below)! How To Get a Better Wireless Signal and Reduce Wireless Network Interference How To Troubleshoot Internet Connection Problems 7 Ways To Free Up Hard Disk Space On Windows

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• Why does Chrome crash on websites using the Awesome font?

  - by harry

  Since github using webfront for icons, every time I open github website that tab will crash. But other websites are not crash. I did everything I can, like disable all extensions, clean all cache, even create a new user profile, still not working. I'm using Ubuntu linux 12.04, last stable google chrome browser, always up to date. I searched from google and not found any one has the issue like mine. And I found any website using Font-Awesome my chrome tab will crash if I open that website.

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• Function syntax puzzler in scalaz

  - by oxbow_lakes

  Following watching Nick Partidge's presentation on deriving scalaz, I got to looking at this example, which is just awesome: import scalaz._ import Scalaz._ def even(x: Int) : Validation[NonEmptyList[String], Int] = if (x % 2 ==0) x.success else "not even: %d".format(x).wrapNel.fail println( even(3) <|*|> even(5) ) //prints: Failure(NonEmptyList(not even: 3, not even: 5)) I was trying to understand what the <|*|> method was doing, here is the source code: def <|*|>[B](b: M[B])(implicit t: Functor[M], a: Apply[M]): M[(A, B)] = <**>(b, (_: A, _: B)) OK, that is fairly confusing (!) - but it references the <**> method, which is declared thus: def <**>[B, C](b: M[B], z: (A, B) => C)(implicit t: Functor[M], a: Apply[M]): M[C] = a(t.fmap(value, z.curried), b) So I have a few questions: How come the method appears to take a monad of one type parameter (M[B]) but can get passed a Validation (which has two type paremeters)? How does the syntax (_: A, _: B) define the function (A, B) => C which the 2nd method expects? It doesn't even define an output via =>

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• Deriving an HTMLElement Object from jQuery Object

  - by Jasconius

  I'm doing a fairly exhaustive series of DOM manipulations where a few elements (specifically form elements) have some events. I am dynamically creating (actually cloning from a source element) several boxes and assigning a change() event to them. The change event executes, and within the context of the event, "this" is the HTML Element Object. What I need to do at this point however is determine a contact for this HTML Element Object. I have these objects stored already as jQuery entities in assorted arrays, but obviously [HTMLElement Object] != [Object Object] And the trick is that I cannot cast $(this) and make a valid comparison since that would create a new object and the pointer would be different. So... I've been banging my head against this for a while. In the past I've been able to circumvent this problem by doing an innerHTML comparison, but in this case the objects I am comparing are 100% identical, just there's lots of them. Therefore I need a solid comparison. This would be easy if I could somehow derive the HTMLElement object from my originating jQuery object. Thoughts, other ideas? Help. :(

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• what is the fastest-best PHP IDE on windows?

  - by vegatron

  hi I've tried a few php IDEs , but still searching for the FASTEST one all Java based IDEs are too slow, I have 2 computers to work, my home pc which is too fast, and my laptop witch is good , but cant handle a heave software. and I have to work on them both, so I'm looking for the best free ide which is fast I'm not talking about text-editors , because I already have np++ and its great, but looking for extra features to help me save time.. any tips?

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• whats is the fastest-best PHP IDE on windows?

  - by vegatron

  hi I've tried a few php IDEs , but still searching for the FASTEST one all Java based IDEs are too slow, I have 2 computers to work, my home pc which is too fast, and my laptop witch is good , but cant handle a heave software. and I have to work on them both, so I'm looking for the best free ide which is fast I'm not talking about text-editors , because I already have np++ and its great, but looking for extra features to help me save time.. any tips?

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• Objective-C FontAwesome

  - by sdover102

  I'm Attempting to get FontAwesome up and running on an iOS app and could use a little assistance. I have the following code for iOS: UIBarButtonItem * viewDeckButton = [[UIBarButtonItem alloc] initWithTitle:@"\uf0c9" style:UIBarButtonItemStyleBordered target:self.viewDeckController action:@selector(toggleLeftView)]; NSDictionary * customTextAttrs = [NSDictionary dictionaryWithObjectsAndKeys: [UIFont fontWithName:@"FontAwesome" size:14.0], UITextAttributeFont, nil]; [viewDeckButton setTitleTextAttributes:customTextAttrs forState:UIControlStateNormal]; @"\uf0c9" corresponds to the css class, icon-reorder. The font appears to be installed on my system (see http://cl.ly/image/2F1x1z2H0i2N). I'm getting the standard box character, as if the font is not loaded (see http://madmonkdev.com/badchar.png). Any help would be appreciated.

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• Getting beyond basic web programming languages. How to be awesome?

  - by user73962

  I'm a web developer that's done a bunch of projects using PHP, JQuery/JS, Mysql using PhPMyAdmin, CSS, HTML and a tiny bit of XML. Basically lots of work with CMS's and freehand coding. I'm looking to take things to the next level. I've done a lot of freelance and small contract work, but I'm dying to excel. I'm tired of acting as tech support for all these "non-tech" companies that barely know how to use their own computers..."really, you didn't think to backup your files before switching to a new server??". Think of potential employers as amazon, netflix, twitter, google, etc. I don't necessarily want to work for these guys specifically, but potentially organizations like this. I could be wrong, but I feel like a big company like this would laugh at me if I interviewed. For example, how helpful is knowing Ruby, SQL (commands without interface), C++, API's, Oracle, Java, debugging, qa, etc? (I realize this is a very random list). I use Notepad ++, but have heard that the bigger boys use IDE interfaces. I'm not really interested in building desktop apps, only web related stuff. I feel like I've reached my potential and want to really take it up a notch. I see a lot of projects on GitHub and I'm amazed at what people have created. Note - my degree is in economics but I've done web dev since high school. I definitely wish I took more comp sci/programming courses in college. I'm 27 and want to be awesome at web dev before it's too late. Not just decent. Any advice? Book suggestions? Thanks

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• How to Global onRouteRequest directly to onBadRequest?

  - by virtualeyes

  EDIT Came up with this to sanitize URI date params prior to passing off to Play router val ymdMatcher = "\\d{8}".r // matcher for yyyyMMdd URI param val ymdFormat = org.joda.time.format.DateTimeFormat.forPattern("yyyyMMdd") def ymd2Date(ymd: String) = ymdFormat.parseDateTime(ymd) override def onRouteRequest(r: RequestHeader): Option[Handler] = { import play.api.i18n.Messages ymdMatcher.findFirstIn(r.uri) map{ ymd=> try { ymd2Date( ymd); super.onRouteRequest(r) } catch { case e:Exception => // kick to "bad" action handler on invalid date Some(controllers.Application.bad(Messages("bad.date.format"))) } } getOrElse(super.onRouteRequest(r)) } ORIGINAL Let's say I want to return a BadRequest result type for all /foo URIs: override def onBadRequest(r: RequestHeader, error: String) = { BadRequest("Bad Request: " + error) } override def onRouteRequest(r: RequestHeader): Option[Handler] = { if(r.uri.startsWith("/foo") onBadRequest("go away") else super.onRouteRequest(r) } Of course does not work, since the expected return type is Option[play.api.mvc.Handler] What's the idiomatic way to deal with this, create a default Application controller method to handle filtered bad requests? Ideally, since I know in onRouteRequest that /foo is in fact a BadRequest, I'd like to call onBadRequest directly. Should note that this is a contrived example, am actually verifying a URI yyyyMMdd date param, and BadRequest-ing if it does not parse to a JodaTime instance -- basically a catch-all filter to sanitize a given date param rather than handling on every single controller method call, not to mention, avoiding cluttering up application log with useless stack traces re: invalid date parse conversions (have several MBs of these junk trace entries accruing daily due to users pointlessly manipulating the uri date in attempts to get at paid subscriber content)

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• lift `??` construct

  - by coubeatczech

  Hi, I have browsed lift's MegaProtoUser and encountered this construction: ??("Last Name"). Can anyone explain, what that means? Thanks for answering

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• Accessing type-parameter of a type-parameter

  - by itemState

  i would like to access, in a trait, the type-parameter of a type-parameter of that trait. without adding this "second-order" type-parameter as another "first-order" parameter to the trait. the following illustrates this problem: sealed trait A; sealed trait A1 extends A; sealed trait A2 extends A trait B[ ASpecific <: A ] { type ASpec = ASpecific } trait D[ ASpecific <: A ] extends B[ ASpecific ] trait C[ +BSpecific <: B[ _ <: A ]] { def unaryOp : C[ D[ BSpecific#ASpec ]] } def test( c: C[ B[ A1 ]]) : C[ D[ A1 ]] = c.unaryOp the test fails to compile because apparently, the c.unaryOp has a result of type C[D[A]] and not C[D[A1]], indicating that ASpec is merely a shortcut for _ <: A and does not refer to the specific type parameter. the two-type-parameter solution is simple: sealed trait A; sealed trait A1 extends A; sealed trait A2 extends A trait B[ ASpecific <: A ] trait D[ ASpecific <: A ] extends B[ ASpecific ] trait C[ ASpecific <: A, +BSpecific <: B[ ASpecific ]] { def unaryOp : C[ ASpecific, D[ ASpecific ]] } def test( c: C[ A1, B[ A1 ]]) : C[ A1, D[ A1 ]] = c.unaryOp but i don't understand why i need to clutter my source with this second, obviously redundant, parameter. is there no way to retrieve it from trait B?

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• DocBook sources of "Starting with Lift"

  - by Wilfred Springer

  By the looks of it, I wouldn't be surprised if "Starting with Lift" has been created from DocBook. I looked in Lift's Git repositories, but I haven't been able to find the source DocBook documents. So, is it really based on DocBook? And if it is, is it available from some public repository?

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• Using lazy evaluation functions in varargs

  - by Jonhnny Weslley

  What is wrong is the following method? def someMethod(funcs: = Option[String]*) = { ... }

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• Composing actors

  - by Brian Heylin

  I've implemented a Listenable/Listener trait that can be added to Actors. I'm wondering if it's possible to attach this style of trait to an actor without it having to explicitly call the listenerHandler method? Also I was expecting to find this functionality in the Akka library. Am I missing something or is there some reason that Akka would not not include this? trait Listenable { this: Actor => private var listeners: List[Actor] = Nil protected def listenerHandler: PartialFunction[Any, Unit] = { case AddListener(who) => listeners = who :: listeners } protected def notifyListeners(event: Any) = { listeners.foreach(_.send(event)) } } class SomeActor extends Actor with Listenable { def receive = listenerHandler orElse { case Start => notifyListeners(Started()) case Stop => notifyListeners(Stopped()) } }

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• How to make ensime work in windows?

  - by Eastsun

  I'm new to emacs and I want to use ensime in Windows. I had a try but it doesn't work. It seems that it doesn't work because there is a *nix format file named "\ensime\bin\server.sh" . Very appreciate if someone give me some tips.

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• Simple subclass mappable class in lift

  - by coubeatczech

  Hi, is there any way how to easy subclass a Mapped class in lift framework? class One extends LongKeyedMapper[One] with IdPK{ object sharedField extend MappedString(this) } class Two extends One[*]{ ... } *and now I can't hint the compiler because One is not defined generic. So this doesn't work, what is the right way?

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• Convert a List of Options to an Option of List using Scalaz

  - by Rafael de F. Ferreira

  The following function transforms a list of Option[T] into a list of Some[T], in the case where all members are Some's, or None, in the case where there is at least one None member. I guess the code is clearer that this explanation: def lo2ol[T](lo: List[Option[T]]): Option[List[T]] = { lo.foldRight[Option[List[T]]](Some(Nil)){(o, ol) => (o, ol) match { case (Some(x), Some(xs)) => Some(x :: xs); case _ => None : Option[List[T]]; }}} I remember seeing somewhere a similar example, but using Scalaz to simplify the code. How would it look like?

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• Simple extend mappable class in lift

  - by coubeatczech

  Hi, is there any way how to easy subclass a Mapped class in lift framework? class One extends LongKeyedMapper[One] with IdPK{ object sharedField extend MappedString(this) } class Two extends One[*]{ ... } *and now I can't hint the compiler because One is not defined generic. So this doesn't work, what is the right way?

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• using REST webservices as a datasource for Lift ?

  - by Jeff Bowman

  Is there a way to use a webservice (REST in this case) as the data source for a Lift application? I can find a number of tutorials/examples of using Lift to provide the REST API, but in my case the data is hosted elsewhere and exported as a REST webservice. Pointers to doc are greatly appreciated. Thanks, Jeff

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• Why "avoid method overloading" ?

  - by Rahul G

  Why does Jorge Ortiz advise to avoid method overloading?

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• Convert Option[Object] to Option[Int] Implicitly

  - by wheaties

  I'm working with legacy Java code which returns java.lang.object. I'm passing it into a function and I'd like to do some implicit conversions as such: implicit def asInt( _in:Option[Object] ) = _in asInstanceOf[ Option[Int] ] implicit def asDouble( _in:Option[Object] = _in asInstanceOf[ Option[Double] ] private def parseEntry( _name:String, _items:Map[String,Object] ) = _name match{ case docName.m_Constants => new Constants( _items get( Constants m_Epsilon ), _items get( Constant m_Rho ), _items get( Constants m_N ) ) Technically it goes on but I keep getting the same errors: expected Int, Option[Object] found. How have I done my implicits wrong? I was hoping it would do the transformation for me instead of me having to write "asInstanceOf" each and every time.

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• PlayDependencyClassLoader does not find application code

  - by jkschneider

  When a third party dependency attempts to load a class defined in a Play application using Class.forName(className, true, Thread.currentThread().getContextClassLoader()); Play will throw a ClassNotFoundException because the context class loader is of type PlayDependencyClassLoader which apparently only contains classes defined in jar dependencies. Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: eventstore.Commit at org.mapdb.SerializerPojo.classForName(SerializerPojo.java:96) at org.mapdb.SerializerPojo$1.deserialize(SerializerPojo.java:74) at org.mapdb.SerializerPojo$1.deserialize(SerializerPojo.java:39) This only occurs when Play is started with play run. Starting Play with play start loads the class correctly. It would be a shame to sacrifice the class hot-swapping because of this behavior. Is there a known workaround?

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• How Can I Check an Object to See its Type and Return A Casted Object

  - by Russ Bradberry

  I have method to which I pass an object. In this method I check it's type and depending on the type I do something with it and return a Long. I have tried every which way I can think of to do this and I always get several compiler errors telling me it expects a certain object but gets another. Can someone please explain to me what I am doing wrong and guide me in the right direction? What I have tried thus far is below: override def getInteger(obj:Object) = { if (obj.isInstanceOf[Object]) null else if (obj.isInstanceOf[Number]) (obj:Number).longValue() else if (obj.isInstanceOf[Boolean]) if (obj:Boolean) 1 else 0 else if (obj.isInstanceOf[String]) if ((obj:String).length == 0 | (obj:String) == "null") null else try { Long.parse(obj:String) } catch { case e: Exception => throw new ValueConverterException("value \"" + obj.toString() + "\" of type " + obj.getClass().getName() + " is not convertible to Long") } }

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• lift `??` construct and maven example

  - by coubeatczech

  Hi, I have browsed lift's MegaProtoUser and encountered this construction: ??("Last Name"). Can anyone explain, what that means? Also, I didn't find a way how to add a custom field into MegaProtoUser. The maven's lift's basic archetype defines another field, but it never shows anywhere. (Version 1.0) Thanks for answering

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