Java Process with Input/Output Stream
I have the following code example below. Whereby you can enter a command to the bash shell i.e. echo test and have the result echo'd back. However, after the first read. Other output streams don't work? Why is this or am I doing something wrong? My end goal is to created a Threaded scheduled task that executes a command periodically to /bash so the OutputStream and InputStream would have to work i
How to add text inside the doughnut chart using Chart.js?
None of the other answers resize the text based off the amount of text and the size of the doughnut. Here is a small script you can use to dynamically place any amount of text in the middle, and it will automatically resize it. Example: http://jsfiddle.net/kdvuxbtj/ It will take any amount of text in the doughnut sized perfect for the doughnut. To avoid touching the edges you can set a side-paddin
DRY FactoryGirl after create/build hooks
I want to DRY up the after create/build hooks in my Factory: FactoryGirl.define do factory :poll do sequence :title do |n| "MyPollTitle#{n}" end sequence :description do |n| "MyPollDescription#{n}" end user factory :poll_with_answers do ignore do answers_count 2 end after(:build) do |poll, evaluator| evaluator.answers_count.times do poll.answers << build(:answer, poll: poll) end end after(:create)
Why does the Scala compiler disallow overloaded methods with default arguments?
While there might be valid cases where such method overloadings could become ambiguous, why does the compiler disallow code which is neither ambiguous at compile time nor at run time? Example: // This fails: def foo(a: String)(b: Int = 42) = a + b def foo(a: Int) (b: Int = 42) = a + b // This fails, too. Even if there is no position in the argument list, // where the types are the same. def foo(a:
How to get logging working in scala unit tests with testng, slf4s, and logback
I'm new to Scala, and not that familiar with recent developments in Java, so I am having what I assume is a basic problem. I'm writing some Scala code, and testing it with test fixtures using ScalaTest and TestNG. The code under test uses slf4s to perform its logging, backed by logback. In my 'build.sbt' file I have dependencies for all the libraries I need: scalaVersion := "2.9.1" // Add test dep
How to set up different databases per environment in Play 2.0?
I'd like my Play app to use different databases for test, local and production (production is Heroku) environments. In application.conf I have: db.default.driver=org.postgresql.Driver %dev.db.default.url="jdbc:postgresql://localhost/foobar" %test.db.default.url="jdbc:postgresql://localhost/foobar-test" %prod.db.default.url=${DATABASE_URL} This doesn't seem to work. When I run play test or play run
Annotating constructor parameters in Scala
Annotating constructor parameters seems to do nothing when compiled to bytecode. I get no compiler warnings either. The following works. getAnnotations for the name field returns javax.annotation.Nullable. class Person { @Nullable var name: String = _; } The following doesn't, neither with val or var. class Person(@Nullable var name: String) This is probably not intentional, so is there something
Instantiating a case class from a list of parameters
Given: case class Foo(a: Int, b: String, c: Double) you can say: val params = Foo(1, "bar", 3.14).productIterator.toList and get: params: List[Any] = List(1, bar, 3.14) Is there a way to "go backwards" and recreate a Foo object directly from this list, i.e.: Foo.createFromList(params) // hypothetical instead of writing: Foo(params(0).asInstanceOf[Int], params(1).asInstanceOf[String], params(2).asI
Catch paste input
I'm looking for a way to sanitize input that I paste into the browser, is this possible to do with jQuery? I've managed to come up with this so far: $(this).live(pasteEventName, function(e) { // this is where i would like to sanitize my input return false; } Unfortunately my development has come to a screeching hold because of this "minor" issue. I would really make me a happy camper if someone co
Django templates and variable attributes
I'm using Google App Engine and Django templates. I have a table that I want to display the objects look something like: Object Result: Items = [item1,item2] Users = [{name='username',item1=3,item2=4},..] The Django template is: <table> <tr align="center"> <th>user</th> {% for item in result.items %} <th>{{item}}</th> {% endfor %} </tr> {% for user in result.users %} <tr align="center"> <td>{{user
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