Search Results

Search found 2800 results on 112 pages for 'scala is awesome'.

Page 28/112 | < Previous Page | 24 25 26 27 28 29 30 31 32 33 34 35  | Next Page >

• How Do I Convert Pipe Delimited to Comma Delimited with Escaping

  - by Russ Bradberry

  Hi, I am fairly new to scala and I have the need to convert a string that is pipe delimited to one that is comma delimited, with the values wrapped in quotes and any quotes escaped by "\" in c# i would probably do this like this string st = "\"" + oldStr.Replace("\"", "\\\\\"").Replace("|", "\",\"") + "\"" I haven't validated that actually…

  Read the article

• Should I upgrade to Intellij Ultimate Edition?

  - by Benjamin Metz

  I am working in java and primarily Scala. I'm using the community edition of Intellij. I'm curious if its worth it to upgrade to the Ultimate Edition? I've been back and forth with Intellij and Eclipse... and for Scala dev I like Intellij a little bit better (for now). Thanks in advance...

  Read the article

• Is Odersky serious with "bills !*&^%~ code!" ?

  - by stacker

  In his book programming in scala (Chapter 5 Section 5.9 Pg 93) Odersky mentioned this expression "bills !*&^%~ code! In the footnote on same page: "By now you should be able to figure out that given this code,the Scala compiler would invoke (bills.!*&^%~(code)).!()." That's a bit to cryptic for me, could someone explain what's…

  Read the article

• type inference still need enhance,any better suggestion for this example?

  - by iamsungod

  for instance in Clojure: user=> (map #(* % 2) (concat [1.1 3] [5 7])) (2.2 6 10 14) but in Scala: scala> List(1.1,3) ::: List(5, 7) map (_ * 2) <console>:6: error: value * is not a member of AnyVal List(1.1,3) ::: List(5, 7) map (_ * 2) ^ Here ::: obtain a list of type…

  Read the article

• Functional programming approach for Java's input/output streams

  - by Elazar Leibovich

  I'm using Java's DataInputStream with scala to parse some simple binary file (which is very bad exprerience due to the lack of unsigned types, even in scala, but that's a different story). However I find myself forced to use mutable data structure, since Java's streams are inherently state preserving entities. What's a good design…

  Read the article

• By-name repeated parameters

  - by Green Hyena

  How to pass by-name repeated parameters in Scala? The following code fails to work: scala> def foo(s: (=> String)*) = { <console>:1: error: no by-name parameter type allowed here def foo(s: (=> String)*) = { ^ Is there any other way I could pass a variable number of by name parameters to…

  Read the article

• Abstract attributes in Python

  - by deamon

  What is the shortest / most elegant way to implement the following Scala code with an abstract attribute in Python? abstract class Controller { val path: String } A subclass of Controller is enforced to define "path" by the Scala compiler. A subclass would look like this: class MyController extends Controller { …

  Read the article

• Common Template Library

  - by user1257547

  I'm trying to create a view that only houses reusable HTML blocks that can be used by other views. Wanted to know if something like this is possible: In views.home.common.scala.html: @component1 = { some common html } @component2 = { some other stuff } In views.home.sample.scala.html: @(user:User) import home._ …

  Read the article

• Fibonnaci Sequence fast implementation

  - by user2947615

  I have written this function in Scala to calculate the fibonacci number given a particular index n: def fibonacci(n: Long): Long = { if(n <= 1) n else fibonacci(n - 1) + fibonacci(n - 2) } However it is not efficient when calculating with large indexes. Therefore I need to implement a function using a…

  Read the article

• should I put the jar dependancies on the shared repo or just the source files ?

  - by ashy_32bit

  We have a Scala project with few source files (in Scala and Java) and quite some dependencies in various binary formats (jar and DLL). I'm wondering what should go into our shared git repo. Only the source files (developers have to download or somehow resolve the dependencies themselves) or the both the source files…

  Read the article

• Declaring functions two ways. What is the distinction?

  - by Synesso

  Are these two function declarations effectively different? If not, why do they have different toString values? scala> def f: (Int) => Int = x=> x*x f: (Int) => Int scala> def f(x: Int) = x*x f: (Int)Int

  Read the article

• should I put the jar dependancies on the sahred repo or just the source files ?

  - by ashy_32bit

  We have a Scala project with few source files (in Scala and Java) and quite some dependencies in various binary formats (jar and DLL). I'm wondering what should go into our shared git repo. Only the source files (developers have to download or somehow resolve the dependencies themselves) or the both the source files…

  Read the article

• Why can't i define recursive variable in code block?

  - by senia

  Why can't i define a variable recursively in a code block? scala> { | val fibs: Stream[Int] = 1 #:: fibs.scanLeft(1){_ + _} | } <console>:9: error: forward reference extends over definition of value fibs val fibs: Stream[Int] = 1 #:: fibs.scanLeft(1){_ + _} …

  Read the article

• Awesome Visual Studio Macros

  - by BBetances

  For a small community discussion, what are some essential Visual Studio macros you guys use? I just started learning about them, and want to hear what some of you guys can't live without.

  Read the article

• Best programming comics/funny photos to make my cubic awesome

  - by Amir Rachum

  Hi all, I'm looking to hang some cool programming related comics/funny photos in my cubic at work. Preferably something colorful (already got plenty of stuff from xkcd, but the black and white is kinda depressing). Any suggestions?

  Read the article

• Problem reading from two separate InputStreams

  - by Emil H

  I'm building a Yammer client for Android in Scala and have encountered the following issue. When two AsyncTasks try to parse an XML response (not the same, each task has it's own InputStream) from the Yammer API the underlying stream throws a IOException with the message "null SSL pointer", as seen below: Uncaught…

  Read the article

• Niewbie OutOfMemory problem

  - by Nick

  So I am trying to create a producer/consumer type scala app. The LoopControl just sends a message to the MessageReceiver continoually. The MessageReceiver then delegates work to the MessageCreatorActor (whose work is to check a map for an object, and if not found create one and start it up). Each MessageActor…

  Read the article

• How do you get an object associated with a Future Actor?

  - by Bruce Ferguson

  I would like to be able to get access to the object that is being returned from spawning a future import scala.actors.Future import scala.actors.Futures._ class Object1(i:Int) { def getAValue(): Int = {i} } object Test { def main( args: Array[String] ) = { var tests = List[Future[Object1]]()…

  Read the article

• Can I transform this asynchronous java network API into a monadic representation (or something else

  - by AlecZorab

  I've been given a java api for connecting to and communicating over a proprietary bus using a callback based style. I'm currently implementing a proof-of-concept application in scala, and I'm trying to work out how I might produce a slightly more idiomatic scala interface. A typical (simplified) application…

  Read the article

• Writing lambda functions in Scala

  - by user2433237

  I'm aware that you can write anonymous functions in Scala but I'm having trouble trying to convert a piece of code from Scheme. Could anyone help me convert this to Scala? (define apply-env (lambda (env search-sym) (cases environment env (empty-env () (eopl:error 'apply-env "No binding for ~s"…

  Read the article

• Unit testing several implementation of the same trait/interface

  - by paradigmatic

  I program mostly in scala and java, using scalatest in scala and junit for unit testing. I would like to apply the very same tests to several implementations of the same interface/trait. The idea is to verify that the interface contract is enforced and to check Liskov substitution principle. For instance,…

  Read the article

• Cost of using repeated parameters

  - by Palimondo

  I consider refactoring few method signatures that currently take parameter of type List or Set of concrete classes --List[Foo]-- to use repeated parameters instead: Foo*. This would allow me to use the same method name and overload it based on the parameter type. This was not possible using List or Set,…

  Read the article

• http(/* argument here */) How is this Object (Http) being used without an explicit or implicit meth

  - by Randin

  In the example for coding with Json using Databinder Dispatch Nathan uses an Object (Http) without a method, shown here: import dispatch._ import Http._ Http("http://www.fox.com/dollhouse/" >>> System.out ) How is he doing this? Thank you for all of the answers unfortunatly I was not…

  Read the article

• Migrating from Maven to SBT

  - by Vasil Remeniuk

  Hi people, As you know, SBT is compatible with Maven in some way -- SBT recognizes simple Maven POMs and can use dependencies and repositories specified in them. However, SBT wiki says that, if inline dependency is specified in SBT project definition, POM will be ignored (so using both in this…

  Read the article

• Discovering a functional algorithm from a mutable one

  - by Garrett Rowe

  This isn't necessarily a Scala question, it's a design question that has to do with avoiding mutable state, functional thinking and that sort. It just happens that I'm using Scala. Given this set of requirements: Input comes from an essentially infinite stream of random numbers between…

  Read the article

< Previous Page | 24 25 26 27 28 29 30 31 32 33 34 35  | Next Page >